./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:01:15,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:01:15,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:01:15,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:01:15,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:01:15,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:01:15,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:01:15,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:01:15,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:01:15,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:01:15,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:01:15,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:01:15,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:01:15,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:01:15,812 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:01:15,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:01:15,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:01:15,813 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:01:15,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:01:15,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:01:15,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:01:15,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:01:15,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:01:15,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:01:15,815 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:01:15,815 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:01:15,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:01:15,815 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:01:15,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:01:15,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:01:15,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:01:15,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:01:15,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:01:15,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:01:15,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:01:15,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:01:15,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:01:15,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:01:15,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:01:15,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:01:15,819 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:01:15,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:01:15,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:01:15,820 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:01:16,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:01:16,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:01:16,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:01:16,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:01:16,119 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:01:16,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:01:17,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:01:17,638 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:01:17,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:01:17,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6026138/99246dee32c64c049d1e6de868de77b8/FLAG771839a58 [2024-06-28 00:01:17,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6026138/99246dee32c64c049d1e6de868de77b8 [2024-06-28 00:01:17,677 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:01:17,678 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:01:17,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:01:17,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:01:17,778 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:01:17,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:01:17,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:01:17,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:01:17,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:01:17" (1/2) ... [2024-06-28 00:01:17,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49529c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:17, skipping insertion in model container [2024-06-28 00:01:17,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:01:17" (1/2) ... [2024-06-28 00:01:17,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@313c6dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:17, skipping insertion in model container [2024-06-28 00:01:17,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:17" (2/2) ... [2024-06-28 00:01:17,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49529c41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:01:17, skipping insertion in model container [2024-06-28 00:01:17,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:17" (2/2) ... [2024-06-28 00:01:17,792 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:01:17,824 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:01:17,826 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:01:17,826 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:01:17,826 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:01:17,826 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 00:01:17,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:01:18,309 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:01:18,323 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:01:18,480 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:01:18,531 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:01:18,531 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:01:18 WrapperNode [2024-06-28 00:01:18,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:01:18,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:01:18,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:01:18,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:01:18,540 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,573 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,615 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 120 [2024-06-28 00:01:18,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:01:18,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:01:18,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:01:18,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:01:18,630 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,630 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,648 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,671 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 00:01:18,672 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,677 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,684 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,694 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,697 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,704 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:01:18,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:01:18,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:01:18,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:01:18,712 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 12:01:18" (1/1) ... [2024-06-28 00:01:18,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:01:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:01:18,741 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 00:01:18,770 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 00:01:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:01:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:01:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:01:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:01:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:01:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:01:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:01:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:01:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:01:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:01:18,790 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 00:01:18,941 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:01:18,943 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:01:19,281 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:01:19,281 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:01:19,523 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:01:19,523 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:01:19,526 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:01:19 BoogieIcfgContainer [2024-06-28 00:01:19,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:01:19,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:01:19,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:01:19,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:01:19,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:01:17" (1/4) ... [2024-06-28 00:01:19,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5753a6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:01:19, skipping insertion in model container [2024-06-28 00:01:19,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:17" (2/4) ... [2024-06-28 00:01:19,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5753a6ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:01:19, skipping insertion in model container [2024-06-28 00:01:19,535 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 12:01:18" (3/4) ... [2024-06-28 00:01:19,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5753a6ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:01:19, skipping insertion in model container [2024-06-28 00:01:19,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:01:19" (4/4) ... [2024-06-28 00:01:19,538 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:01:19,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:01:19,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:01:19,557 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:01:19,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:01:19,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 00:01:19,680 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 00:01:19,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:01:19,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:01:19,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 00:01:19,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 00:01:19,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:01:19,706 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;@4c617e19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:01:19,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:01:19,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:01:19,710 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:01:19,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:01:19,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:19,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:01:19,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:19,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 325199742, now seen corresponding path program 1 times [2024-06-28 00:01:19,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:19,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219924951] [2024-06-28 00:01:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:19,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:20,480 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 00:01:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219924951] [2024-06-28 00:01:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219924951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:20,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:20,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:01:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49258963] [2024-06-28 00:01:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:01:20,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:01:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:01:20,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-06-28 00:01:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 00:01:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:20,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-06-28 00:01:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:20,639 INFO L124 PetriNetUnfolderBase]: 41/117 cut-off events. [2024-06-28 00:01:20,640 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 00:01:20,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 117 events. 41/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 488 event pairs, 14 based on Foata normal form. 3/109 useless extension candidates. Maximal degree in co-relation 202. Up to 61 conditions per place. [2024-06-28 00:01:20,646 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-06-28 00:01:20,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 88 flow [2024-06-28 00:01:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:01:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:01:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-06-28 00:01:20,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-06-28 00:01:20,661 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 65 transitions. [2024-06-28 00:01:20,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 88 flow [2024-06-28 00:01:20,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:20,666 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2024-06-28 00:01:20,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2024-06-28 00:01:20,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-06-28 00:01:20,672 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2024-06-28 00:01:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 00:01:20,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:20,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:01:20,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:20,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash 844517404, now seen corresponding path program 1 times [2024-06-28 00:01:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:20,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763420407] [2024-06-28 00:01:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:21,211 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 00:01:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763420407] [2024-06-28 00:01:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763420407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:21,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:01:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93448822] [2024-06-28 00:01:21,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:01:21,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:21,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:01:21,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:01:21,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-06-28 00:01:21,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 00:01:21,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:21,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-06-28 00:01:21,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:21,296 INFO L124 PetriNetUnfolderBase]: 39/120 cut-off events. [2024-06-28 00:01:21,296 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-06-28 00:01:21,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 120 events. 39/120 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 471 event pairs, 14 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 222. Up to 73 conditions per place. [2024-06-28 00:01:21,298 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-06-28 00:01:21,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 123 flow [2024-06-28 00:01:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:01:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:01:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-06-28 00:01:21,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-28 00:01:21,300 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 4 states and 86 transitions. [2024-06-28 00:01:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 123 flow [2024-06-28 00:01:21,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 117 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:21,302 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 87 flow [2024-06-28 00:01:21,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 00:01:21,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-06-28 00:01:21,304 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 87 flow [2024-06-28 00:01:21,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 00:01:21,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:21,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:01:21,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:21,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1794248880, now seen corresponding path program 1 times [2024-06-28 00:01:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:21,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386787819] [2024-06-28 00:01:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:22,080 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 00:01:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386787819] [2024-06-28 00:01:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386787819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837858724] [2024-06-28 00:01:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:22,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:22,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-06-28 00:01:22,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:01:22,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:22,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-06-28 00:01:22,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:22,250 INFO L124 PetriNetUnfolderBase]: 43/132 cut-off events. [2024-06-28 00:01:22,251 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-06-28 00:01:22,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 132 events. 43/132 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 533 event pairs, 4 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 286. Up to 58 conditions per place. [2024-06-28 00:01:22,253 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 19 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2024-06-28 00:01:22,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 172 flow [2024-06-28 00:01:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 00:01:22,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5580357142857143 [2024-06-28 00:01:22,255 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 87 flow. Second operand 7 states and 125 transitions. [2024-06-28 00:01:22,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 172 flow [2024-06-28 00:01:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:01:22,257 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 122 flow [2024-06-28 00:01:22,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2024-06-28 00:01:22,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 00:01:22,259 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 122 flow [2024-06-28 00:01:22,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:01:22,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:22,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:01:22,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:22,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2126669606, now seen corresponding path program 2 times [2024-06-28 00:01:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:22,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494373167] [2024-06-28 00:01:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:23,078 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 00:01:23,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494373167] [2024-06-28 00:01:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494373167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366830105] [2024-06-28 00:01:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:23,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:23,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:23,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-06-28 00:01:23,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 122 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) [2024-06-28 00:01:23,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:23,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-06-28 00:01:23,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:23,245 INFO L124 PetriNetUnfolderBase]: 40/123 cut-off events. [2024-06-28 00:01:23,245 INFO L125 PetriNetUnfolderBase]: For 109/113 co-relation queries the response was YES. [2024-06-28 00:01:23,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 123 events. 40/123 cut-off events. For 109/113 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 501 event pairs, 9 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 298. Up to 44 conditions per place. [2024-06-28 00:01:23,247 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 18 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-28 00:01:23,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 186 flow [2024-06-28 00:01:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 00:01:23,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-06-28 00:01:23,249 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 122 flow. Second operand 6 states and 113 transitions. [2024-06-28 00:01:23,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 186 flow [2024-06-28 00:01:23,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 177 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:23,255 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 133 flow [2024-06-28 00:01:23,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=133, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2024-06-28 00:01:23,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-28 00:01:23,257 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 133 flow [2024-06-28 00:01:23,257 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) [2024-06-28 00:01:23,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:23,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:23,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:01:23,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:23,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:23,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1432183928, now seen corresponding path program 1 times [2024-06-28 00:01:23,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:23,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661225704] [2024-06-28 00:01:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:23,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:23,794 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 00:01:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661225704] [2024-06-28 00:01:23,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661225704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:23,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:23,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:01:23,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947082332] [2024-06-28 00:01:23,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:23,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:01:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:23,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:01:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:01:23,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-06-28 00:01:23,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 00:01:23,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:23,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-06-28 00:01:23,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:23,896 INFO L124 PetriNetUnfolderBase]: 37/122 cut-off events. [2024-06-28 00:01:23,896 INFO L125 PetriNetUnfolderBase]: For 128/132 co-relation queries the response was YES. [2024-06-28 00:01:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 122 events. 37/122 cut-off events. For 128/132 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 468 event pairs, 10 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 300. Up to 65 conditions per place. [2024-06-28 00:01:23,898 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 18 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2024-06-28 00:01:23,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 197 flow [2024-06-28 00:01:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:01:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:01:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-28 00:01:23,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 00:01:23,900 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 133 flow. Second operand 5 states and 104 transitions. [2024-06-28 00:01:23,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 36 transitions, 197 flow [2024-06-28 00:01:23,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 179 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:23,902 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 133 flow [2024-06-28 00:01:23,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2024-06-28 00:01:23,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-28 00:01:23,903 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 133 flow [2024-06-28 00:01:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 00:01:23,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:23,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:01:23,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1652430436, now seen corresponding path program 1 times [2024-06-28 00:01:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056706718] [2024-06-28 00:01:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:24,789 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 00:01:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056706718] [2024-06-28 00:01:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056706718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187517851] [2024-06-28 00:01:24,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:24,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:24,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-06-28 00:01:24,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:24,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:24,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-06-28 00:01:24,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:24,945 INFO L124 PetriNetUnfolderBase]: 41/136 cut-off events. [2024-06-28 00:01:24,945 INFO L125 PetriNetUnfolderBase]: For 173/177 co-relation queries the response was YES. [2024-06-28 00:01:24,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 136 events. 41/136 cut-off events. For 173/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 551 event pairs, 8 based on Foata normal form. 4/138 useless extension candidates. Maximal degree in co-relation 325. Up to 44 conditions per place. [2024-06-28 00:01:24,947 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 13 selfloop transitions, 3 changer transitions 14/40 dead transitions. [2024-06-28 00:01:24,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 215 flow [2024-06-28 00:01:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 00:01:24,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 00:01:24,950 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 133 flow. Second operand 6 states and 118 transitions. [2024-06-28 00:01:24,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 215 flow [2024-06-28 00:01:24,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 196 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:24,955 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 96 flow [2024-06-28 00:01:24,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2024-06-28 00:01:24,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-28 00:01:24,958 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 96 flow [2024-06-28 00:01:24,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:24,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:24,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:24,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:01:24,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:24,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 593202942, now seen corresponding path program 2 times [2024-06-28 00:01:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468996579] [2024-06-28 00:01:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:25,793 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 00:01:25,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:25,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468996579] [2024-06-28 00:01:25,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468996579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:25,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:25,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666744304] [2024-06-28 00:01:25,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:25,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:25,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:25,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-06-28 00:01:25,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 00:01:25,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:25,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-06-28 00:01:25,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:25,933 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2024-06-28 00:01:25,933 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-28 00:01:25,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 90 events. 25/90 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 305 event pairs, 8 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 197. Up to 31 conditions per place. [2024-06-28 00:01:25,935 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 11 selfloop transitions, 3 changer transitions 7/32 dead transitions. [2024-06-28 00:01:25,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 152 flow [2024-06-28 00:01:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 00:01:25,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 00:01:25,937 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 96 flow. Second operand 6 states and 118 transitions. [2024-06-28 00:01:25,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 152 flow [2024-06-28 00:01:25,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 134 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:01:25,940 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 76 flow [2024-06-28 00:01:25,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2024-06-28 00:01:25,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 00:01:25,942 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 76 flow [2024-06-28 00:01:25,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 00:01:25,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:25,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:25,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:01:25,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:25,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1051063580, now seen corresponding path program 3 times [2024-06-28 00:01:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:25,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17207353] [2024-06-28 00:01:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:26,842 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 00:01:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17207353] [2024-06-28 00:01:26,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17207353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:26,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:26,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343744813] [2024-06-28 00:01:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:26,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:26,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-06-28 00:01:26,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 00:01:26,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:26,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-06-28 00:01:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:26,945 INFO L124 PetriNetUnfolderBase]: 11/52 cut-off events. [2024-06-28 00:01:26,945 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-28 00:01:26,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 52 events. 11/52 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 104. Up to 16 conditions per place. [2024-06-28 00:01:26,946 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-28 00:01:26,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 102 flow [2024-06-28 00:01:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-28 00:01:26,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:01:26,948 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 76 flow. Second operand 6 states and 112 transitions. [2024-06-28 00:01:26,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 102 flow [2024-06-28 00:01:26,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:26,949 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-28 00:01:26,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-28 00:01:26,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 00:01:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-28 00:01:26,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 00:01:26,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:01:26,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:01:26,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:01:26,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:01:26,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:01:26,955 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-06-28 00:01:26,958 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:01:26,959 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:01:26,963 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:01:26,963 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:01:26,965 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:01:26 BasicIcfg [2024-06-28 00:01:26,965 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:01:26,965 INFO L158 Benchmark]: Toolchain (without parser) took 9187.79ms. Allocated memory was 167.8MB in the beginning and 379.6MB in the end (delta: 211.8MB). Free memory was 113.3MB in the beginning and 252.6MB in the end (delta: -139.3MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,966 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:01:26,966 INFO L158 Benchmark]: Witness Parser took 4.90ms. Allocated memory is still 167.8MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:01:26,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 751.60ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 84.5MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.18ms. Allocated memory is still 167.8MB. Free memory was 84.5MB in the beginning and 81.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,967 INFO L158 Benchmark]: Boogie Preprocessor took 90.88ms. Allocated memory is still 167.8MB. Free memory was 81.8MB in the beginning and 78.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,967 INFO L158 Benchmark]: RCFGBuilder took 815.39ms. Allocated memory was 167.8MB in the beginning and 207.6MB in the end (delta: 39.8MB). Free memory was 78.2MB in the beginning and 154.9MB in the end (delta: -76.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,967 INFO L158 Benchmark]: TraceAbstraction took 7435.66ms. Allocated memory was 207.6MB in the beginning and 379.6MB in the end (delta: 172.0MB). Free memory was 153.9MB in the beginning and 252.6MB in the end (delta: -98.7MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2024-06-28 00:01:26,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.90ms. Allocated memory is still 167.8MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 751.60ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 84.5MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.18ms. Allocated memory is still 167.8MB. Free memory was 84.5MB in the beginning and 81.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.88ms. Allocated memory is still 167.8MB. Free memory was 81.8MB in the beginning and 78.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 815.39ms. Allocated memory was 167.8MB in the beginning and 207.6MB in the end (delta: 39.8MB). Free memory was 78.2MB in the beginning and 154.9MB in the end (delta: -76.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7435.66ms. Allocated memory was 207.6MB in the beginning and 379.6MB in the end (delta: 172.0MB). Free memory was 153.9MB in the beginning and 252.6MB in the end (delta: -98.7MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 817]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 626 IncrementalHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 6 mSDtfsCounter, 626 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=4, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 2157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:01:27,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE