./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.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/mix004.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:03:29,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:03:29,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:03:29,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:03:29,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:03:29,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:03:29,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:03:29,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:03:29,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:03:29,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:03:29,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:03:29,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:03:29,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:03:29,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:03:29,377 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:03:29,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:03:29,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:03:29,378 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:03:29,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:03:29,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:03:29,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:03:29,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:03:29,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:03:29,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:03:29,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:03:29,380 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:03:29,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:03:29,380 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:03:29,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:03:29,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:03:29,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:03:29,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:03:29,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:03:29,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:03:29,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:03:29,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:03:29,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:03:29,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:03:29,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:03:29,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:03:29,384 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:03:29,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:03:29,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:03:29,385 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:03:29,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:03:29,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:03:29,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:03:29,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:03:29,634 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:03:29,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-27 22:03:30,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:03:30,898 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:03:30,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-27 22:03:30,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b21cc4b7/ec44393e388c4a74963c271ffbd14e02/FLAG8f602540a [2024-06-27 22:03:30,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b21cc4b7/ec44393e388c4a74963c271ffbd14e02 [2024-06-27 22:03:30,944 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:03:30,945 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:03:30,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.opt.yml/witness.yml [2024-06-27 22:03:31,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:03:31,026 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:03:31,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:03:31,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:03:31,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:03:31,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:03:30" (1/2) ... [2024-06-27 22:03:31,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:31, skipping insertion in model container [2024-06-27 22:03:31,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:03:30" (1/2) ... [2024-06-27 22:03:31,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a92acc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:31, skipping insertion in model container [2024-06-27 22:03:31,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:31" (2/2) ... [2024-06-27 22:03:31,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4577d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31, skipping insertion in model container [2024-06-27 22:03:31,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:31" (2/2) ... [2024-06-27 22:03:31,037 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:03:31,066 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:03:31,067 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:03:31,067 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:03:31,068 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:03:31,068 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:03:31,068 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:03:31,069 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 22:03:31,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:03:31,307 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i[944,957] [2024-06-27 22:03:31,461 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:03:31,469 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:03:31,502 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:03:31,649 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:03:31,693 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:03:31,694 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31 WrapperNode [2024-06-27 22:03:31,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:03:31,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:03:31,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:03:31,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:03:31,700 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 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,728 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 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,805 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2024-06-27 22:03:31,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:03:31,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:03:31,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:03:31,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:03:31,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,875 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]. [2024-06-27 22:03:31,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:03:31,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:03:31,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:03:31,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:03:31,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (1/1) ... [2024-06-27 22:03:31,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:03:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:03:31,973 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) [2024-06-27 22:03:32,018 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 [2024-06-27 22:03:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:03:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:03:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:03:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:03:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:03:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:03:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:03:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:03:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 22:03:32,035 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 22:03:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:03:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:03:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:03:32,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:03:32,037 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:03:32,169 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:03:32,171 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:03:32,620 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:03:32,620 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:03:32,765 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:03:32,766 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:03:32,766 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:03:32 BoogieIcfgContainer [2024-06-27 22:03:32,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:03:32,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:03:32,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:03:32,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:03:32,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:03:30" (1/4) ... [2024-06-27 22:03:32,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:03:32, skipping insertion in model container [2024-06-27 22:03:32,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:31" (2/4) ... [2024-06-27 22:03:32,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afd79 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:03:32, skipping insertion in model container [2024-06-27 22:03:32,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:31" (3/4) ... [2024-06-27 22:03:32,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afd79 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:03:32, skipping insertion in model container [2024-06-27 22:03:32,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:03:32" (4/4) ... [2024-06-27 22:03:32,775 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-06-27 22:03:32,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:03:32,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 22:03:32,788 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:03:32,833 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:03:32,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 22:03:32,921 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 22:03:32,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:03:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-27 22:03:32,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 22:03:32,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 22:03:32,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:03:32,949 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;@58ef8361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:03:32,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 22:03:32,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:03:32,954 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:03:32,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:03:32,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:32,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:03:32,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:32,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash 395648284, now seen corresponding path program 1 times [2024-06-27 22:03:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932126289] [2024-06-27 22:03:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932126289] [2024-06-27 22:03:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932126289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:34,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:03:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257026199] [2024-06-27 22:03:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:34,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:03:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:03:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:03:34,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-27 22:03:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-27 22:03:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:34,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-27 22:03:34,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:36,212 INFO L124 PetriNetUnfolderBase]: 12624/19207 cut-off events. [2024-06-27 22:03:36,212 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-27 22:03:36,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36349 conditions, 19207 events. 12624/19207 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 136476 event pairs, 10423 based on Foata normal form. 480/18353 useless extension candidates. Maximal degree in co-relation 36336. Up to 16919 conditions per place. [2024-06-27 22:03:36,319 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 49 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-06-27 22:03:36,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 273 flow [2024-06-27 22:03:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:03:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:03:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-06-27 22:03:36,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7175141242937854 [2024-06-27 22:03:36,330 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 127 transitions. [2024-06-27 22:03:36,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 273 flow [2024-06-27 22:03:36,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 266 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:36,339 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 157 flow [2024-06-27 22:03:36,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-27 22:03:36,344 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 22:03:36,344 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 157 flow [2024-06-27 22:03:36,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-27 22:03:36,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:36,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:36,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:03:36,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:36,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2034027013, now seen corresponding path program 1 times [2024-06-27 22:03:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:36,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829390053] [2024-06-27 22:03:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:36,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:37,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:37,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829390053] [2024-06-27 22:03:37,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829390053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:37,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:03:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281095577] [2024-06-27 22:03:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:37,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:03:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:03:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:03:37,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-06-27 22:03:37,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-06-27 22:03:37,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:37,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-06-27 22:03:37,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:39,265 INFO L124 PetriNetUnfolderBase]: 14355/21669 cut-off events. [2024-06-27 22:03:39,272 INFO L125 PetriNetUnfolderBase]: For 3862/3862 co-relation queries the response was YES. [2024-06-27 22:03:39,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46313 conditions, 21669 events. 14355/21669 cut-off events. For 3862/3862 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 154107 event pairs, 10359 based on Foata normal form. 4/20443 useless extension candidates. Maximal degree in co-relation 46301. Up to 19170 conditions per place. [2024-06-27 22:03:39,399 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 64 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2024-06-27 22:03:39,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 385 flow [2024-06-27 22:03:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:03:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:03:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-06-27 22:03:39,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-06-27 22:03:39,401 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 157 flow. Second operand 4 states and 162 transitions. [2024-06-27 22:03:39,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 385 flow [2024-06-27 22:03:39,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:03:39,403 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 207 flow [2024-06-27 22:03:39,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-06-27 22:03:39,404 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 22:03:39,404 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 207 flow [2024-06-27 22:03:39,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-06-27 22:03:39,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:39,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:39,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:03:39,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:39,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1996802144, now seen corresponding path program 1 times [2024-06-27 22:03:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298345696] [2024-06-27 22:03:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298345696] [2024-06-27 22:03:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298345696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430809403] [2024-06-27 22:03:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:40,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-27 22:03:40,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-06-27 22:03:40,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:40,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-27 22:03:40,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:42,850 INFO L124 PetriNetUnfolderBase]: 18167/27243 cut-off events. [2024-06-27 22:03:42,850 INFO L125 PetriNetUnfolderBase]: For 12737/12737 co-relation queries the response was YES. [2024-06-27 22:03:42,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63987 conditions, 27243 events. 18167/27243 cut-off events. For 12737/12737 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 194614 event pairs, 10577 based on Foata normal form. 8/25735 useless extension candidates. Maximal degree in co-relation 63973. Up to 24082 conditions per place. [2024-06-27 22:03:43,103 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 90 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2024-06-27 22:03:43,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 584 flow [2024-06-27 22:03:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:03:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:03:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-06-27 22:03:43,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-06-27 22:03:43,110 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 207 flow. Second operand 6 states and 231 transitions. [2024-06-27 22:03:43,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 584 flow [2024-06-27 22:03:43,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 122 transitions, 556 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:03:43,114 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 271 flow [2024-06-27 22:03:43,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-27 22:03:43,115 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-06-27 22:03:43,115 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 271 flow [2024-06-27 22:03:43,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-06-27 22:03:43,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:43,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:43,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:03:43,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:43,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 621741946, now seen corresponding path program 1 times [2024-06-27 22:03:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592902293] [2024-06-27 22:03:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:44,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:44,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592902293] [2024-06-27 22:03:44,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592902293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:44,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:03:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346589085] [2024-06-27 22:03:44,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:44,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:03:44,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:03:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:03:44,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:03:44,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-27 22:03:44,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:44,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:03:44,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:47,414 INFO L124 PetriNetUnfolderBase]: 20715/28164 cut-off events. [2024-06-27 22:03:47,415 INFO L125 PetriNetUnfolderBase]: For 24402/24402 co-relation queries the response was YES. [2024-06-27 22:03:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76405 conditions, 28164 events. 20715/28164 cut-off events. For 24402/24402 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 172303 event pairs, 9343 based on Foata normal form. 4/27387 useless extension candidates. Maximal degree in co-relation 76388. Up to 27498 conditions per place. [2024-06-27 22:03:47,577 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 80 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2024-06-27 22:03:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 592 flow [2024-06-27 22:03:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:03:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:03:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 22:03:47,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2024-06-27 22:03:47,579 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 271 flow. Second operand 6 states and 197 transitions. [2024-06-27 22:03:47,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 592 flow [2024-06-27 22:03:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 552 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:47,592 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 353 flow [2024-06-27 22:03:47,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-27 22:03:47,593 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2024-06-27 22:03:47,594 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 353 flow [2024-06-27 22:03:47,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-27 22:03:47,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:47,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:47,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:03:47,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:47,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash 487890969, now seen corresponding path program 1 times [2024-06-27 22:03:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:47,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866308271] [2024-06-27 22:03:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866308271] [2024-06-27 22:03:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866308271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133483683] [2024-06-27 22:03:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:48,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:48,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:03:48,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:03:48,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:48,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:03:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:51,822 INFO L124 PetriNetUnfolderBase]: 20865/28355 cut-off events. [2024-06-27 22:03:51,823 INFO L125 PetriNetUnfolderBase]: For 41267/41271 co-relation queries the response was YES. [2024-06-27 22:03:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84532 conditions, 28355 events. 20865/28355 cut-off events. For 41267/41271 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 173259 event pairs, 8977 based on Foata normal form. 6/27562 useless extension candidates. Maximal degree in co-relation 84510. Up to 27530 conditions per place. [2024-06-27 22:03:52,011 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 99 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-27 22:03:52,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 153 transitions, 962 flow [2024-06-27 22:03:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-06-27 22:03:52,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-06-27 22:03:52,013 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 353 flow. Second operand 7 states and 245 transitions. [2024-06-27 22:03:52,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 153 transitions, 962 flow [2024-06-27 22:03:52,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 153 transitions, 936 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:03:52,121 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 622 flow [2024-06-27 22:03:52,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-06-27 22:03:52,122 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-06-27 22:03:52,122 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 622 flow [2024-06-27 22:03:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:03:52,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:52,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:03:52,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:52,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1937180923, now seen corresponding path program 2 times [2024-06-27 22:03:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:52,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075455984] [2024-06-27 22:03:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075455984] [2024-06-27 22:03:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075455984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99258261] [2024-06-27 22:03:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:53,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:53,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:03:53,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:03:53,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:53,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:03:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:56,947 INFO L124 PetriNetUnfolderBase]: 20855/28383 cut-off events. [2024-06-27 22:03:56,947 INFO L125 PetriNetUnfolderBase]: For 63117/63174 co-relation queries the response was YES. [2024-06-27 22:03:57,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92393 conditions, 28383 events. 20855/28383 cut-off events. For 63117/63174 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 173439 event pairs, 8966 based on Foata normal form. 59/27670 useless extension candidates. Maximal degree in co-relation 92364. Up to 27521 conditions per place. [2024-06-27 22:03:57,143 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 94 selfloop transitions, 41 changer transitions 0/149 dead transitions. [2024-06-27 22:03:57,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 149 transitions, 1034 flow [2024-06-27 22:03:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-06-27 22:03:57,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-06-27 22:03:57,145 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 622 flow. Second operand 7 states and 238 transitions. [2024-06-27 22:03:57,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 149 transitions, 1034 flow [2024-06-27 22:03:57,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 149 transitions, 980 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-27 22:03:57,245 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 666 flow [2024-06-27 22:03:57,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=666, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2024-06-27 22:03:57,246 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-06-27 22:03:57,246 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 666 flow [2024-06-27 22:03:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:03:57,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:57,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:57,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:03:57,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:03:57,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1358328601, now seen corresponding path program 3 times [2024-06-27 22:03:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501662392] [2024-06-27 22:03:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:58,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501662392] [2024-06-27 22:03:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501662392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:58,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:58,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595488117] [2024-06-27 22:03:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:58,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:58,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:03:58,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:03:58,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:58,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:03:58,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:01,339 INFO L124 PetriNetUnfolderBase]: 21036/28630 cut-off events. [2024-06-27 22:04:01,339 INFO L125 PetriNetUnfolderBase]: For 62936/62944 co-relation queries the response was YES. [2024-06-27 22:04:01,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92699 conditions, 28630 events. 21036/28630 cut-off events. For 62936/62944 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 174743 event pairs, 8964 based on Foata normal form. 7/27865 useless extension candidates. Maximal degree in co-relation 92666. Up to 27715 conditions per place. [2024-06-27 22:04:01,567 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 109 selfloop transitions, 60 changer transitions 0/183 dead transitions. [2024-06-27 22:04:01,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 183 transitions, 1359 flow [2024-06-27 22:04:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2024-06-27 22:04:01,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783898305084746 [2024-06-27 22:04:01,571 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 666 flow. Second operand 8 states and 273 transitions. [2024-06-27 22:04:01,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 183 transitions, 1359 flow [2024-06-27 22:04:01,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 183 transitions, 1215 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:01,655 INFO L231 Difference]: Finished difference. Result has 100 places, 127 transitions, 945 flow [2024-06-27 22:04:01,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=945, PETRI_PLACES=100, PETRI_TRANSITIONS=127} [2024-06-27 22:04:01,657 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 33 predicate places. [2024-06-27 22:04:01,657 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 127 transitions, 945 flow [2024-06-27 22:04:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 22:04:01,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:01,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:04:01,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:01,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -872499089, now seen corresponding path program 1 times [2024-06-27 22:04:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523255809] [2024-06-27 22:04:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:03,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:03,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523255809] [2024-06-27 22:04:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523255809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:03,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:03,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312138507] [2024-06-27 22:04:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:03,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:03,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:03,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:03,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 127 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:03,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:03,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:03,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:06,637 INFO L124 PetriNetUnfolderBase]: 21266/28916 cut-off events. [2024-06-27 22:04:06,637 INFO L125 PetriNetUnfolderBase]: For 73106/73170 co-relation queries the response was YES. [2024-06-27 22:04:06,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95847 conditions, 28916 events. 21266/28916 cut-off events. For 73106/73170 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 176089 event pairs, 8752 based on Foata normal form. 12/28155 useless extension candidates. Maximal degree in co-relation 95810. Up to 27971 conditions per place. [2024-06-27 22:04:06,910 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 154 selfloop transitions, 35 changer transitions 0/203 dead transitions. [2024-06-27 22:04:06,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 203 transitions, 1601 flow [2024-06-27 22:04:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 291 transitions. [2024-06-27 22:04:06,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480225988700564 [2024-06-27 22:04:06,912 INFO L175 Difference]: Start difference. First operand has 100 places, 127 transitions, 945 flow. Second operand 9 states and 291 transitions. [2024-06-27 22:04:06,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 203 transitions, 1601 flow [2024-06-27 22:04:07,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 1512 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:07,011 INFO L231 Difference]: Finished difference. Result has 108 places, 139 transitions, 1045 flow [2024-06-27 22:04:07,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1045, PETRI_PLACES=108, PETRI_TRANSITIONS=139} [2024-06-27 22:04:07,014 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 41 predicate places. [2024-06-27 22:04:07,014 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 1045 flow [2024-06-27 22:04:07,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:07,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:07,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:04:07,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -872379119, now seen corresponding path program 2 times [2024-06-27 22:04:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112929713] [2024-06-27 22:04:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112929713] [2024-06-27 22:04:08,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112929713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224499912] [2024-06-27 22:04:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:08,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:08,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 1045 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:08,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:08,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:08,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:11,871 INFO L124 PetriNetUnfolderBase]: 21373/29030 cut-off events. [2024-06-27 22:04:11,871 INFO L125 PetriNetUnfolderBase]: For 103036/103108 co-relation queries the response was YES. [2024-06-27 22:04:12,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103933 conditions, 29030 events. 21373/29030 cut-off events. For 103036/103108 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 177078 event pairs, 8568 based on Foata normal form. 61/28298 useless extension candidates. Maximal degree in co-relation 103893. Up to 27854 conditions per place. [2024-06-27 22:04:12,162 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 124 selfloop transitions, 86 changer transitions 0/224 dead transitions. [2024-06-27 22:04:12,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 224 transitions, 1970 flow [2024-06-27 22:04:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-06-27 22:04:12,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038135593220338 [2024-06-27 22:04:12,164 INFO L175 Difference]: Start difference. First operand has 108 places, 139 transitions, 1045 flow. Second operand 8 states and 285 transitions. [2024-06-27 22:04:12,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 224 transitions, 1970 flow [2024-06-27 22:04:12,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 224 transitions, 1900 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:12,382 INFO L231 Difference]: Finished difference. Result has 115 places, 158 transitions, 1409 flow [2024-06-27 22:04:12,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1409, PETRI_PLACES=115, PETRI_TRANSITIONS=158} [2024-06-27 22:04:12,383 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2024-06-27 22:04:12,383 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 158 transitions, 1409 flow [2024-06-27 22:04:12,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:12,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:12,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:12,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:04:12,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:12,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1636931099, now seen corresponding path program 3 times [2024-06-27 22:04:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293406579] [2024-06-27 22:04:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:12,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293406579] [2024-06-27 22:04:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293406579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:13,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736853658] [2024-06-27 22:04:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:13,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:13,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:13,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 158 transitions, 1409 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:13,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:13,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:17,503 INFO L124 PetriNetUnfolderBase]: 21363/29026 cut-off events. [2024-06-27 22:04:17,504 INFO L125 PetriNetUnfolderBase]: For 141607/141703 co-relation queries the response was YES. [2024-06-27 22:04:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111705 conditions, 29026 events. 21363/29026 cut-off events. For 141607/141703 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 175649 event pairs, 8723 based on Foata normal form. 55/28316 useless extension candidates. Maximal degree in co-relation 111661. Up to 27845 conditions per place. [2024-06-27 22:04:17,848 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 121 selfloop transitions, 87 changer transitions 0/222 dead transitions. [2024-06-27 22:04:17,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 222 transitions, 2079 flow [2024-06-27 22:04:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-06-27 22:04:17,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.586864406779661 [2024-06-27 22:04:17,850 INFO L175 Difference]: Start difference. First operand has 115 places, 158 transitions, 1409 flow. Second operand 8 states and 277 transitions. [2024-06-27 22:04:17,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 222 transitions, 2079 flow [2024-06-27 22:04:18,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 222 transitions, 1991 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:18,071 INFO L231 Difference]: Finished difference. Result has 121 places, 158 transitions, 1512 flow [2024-06-27 22:04:18,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1512, PETRI_PLACES=121, PETRI_TRANSITIONS=158} [2024-06-27 22:04:18,071 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 54 predicate places. [2024-06-27 22:04:18,071 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 158 transitions, 1512 flow [2024-06-27 22:04:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:18,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:18,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:04:18,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:18,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash -793927369, now seen corresponding path program 4 times [2024-06-27 22:04:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:18,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078716384] [2024-06-27 22:04:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:18,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078716384] [2024-06-27 22:04:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078716384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:19,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:19,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524725423] [2024-06-27 22:04:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:19,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:19,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 158 transitions, 1512 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:19,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:19,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:19,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:23,236 INFO L124 PetriNetUnfolderBase]: 21737/29602 cut-off events. [2024-06-27 22:04:23,236 INFO L125 PetriNetUnfolderBase]: For 147980/148112 co-relation queries the response was YES. [2024-06-27 22:04:23,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115408 conditions, 29602 events. 21737/29602 cut-off events. For 147980/148112 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 179666 event pairs, 8703 based on Foata normal form. 36/28878 useless extension candidates. Maximal degree in co-relation 115361. Up to 28557 conditions per place. [2024-06-27 22:04:23,591 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 206 selfloop transitions, 78 changer transitions 0/298 dead transitions. [2024-06-27 22:04:23,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 298 transitions, 2937 flow [2024-06-27 22:04:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:04:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:04:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 377 transitions. [2024-06-27 22:04:23,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808936825885979 [2024-06-27 22:04:23,593 INFO L175 Difference]: Start difference. First operand has 121 places, 158 transitions, 1512 flow. Second operand 11 states and 377 transitions. [2024-06-27 22:04:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 298 transitions, 2937 flow [2024-06-27 22:04:23,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 298 transitions, 2737 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:23,820 INFO L231 Difference]: Finished difference. Result has 129 places, 201 transitions, 2033 flow [2024-06-27 22:04:23,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2033, PETRI_PLACES=129, PETRI_TRANSITIONS=201} [2024-06-27 22:04:23,821 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 62 predicate places. [2024-06-27 22:04:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 201 transitions, 2033 flow [2024-06-27 22:04:23,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:23,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:23,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:04:23,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:23,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash -73806087, now seen corresponding path program 5 times [2024-06-27 22:04:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128347342] [2024-06-27 22:04:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:25,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128347342] [2024-06-27 22:04:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128347342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:25,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274511188] [2024-06-27 22:04:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:25,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:25,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 201 transitions, 2033 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:25,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:25,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:25,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:29,781 INFO L124 PetriNetUnfolderBase]: 22303/30452 cut-off events. [2024-06-27 22:04:29,782 INFO L125 PetriNetUnfolderBase]: For 171215/171351 co-relation queries the response was YES. [2024-06-27 22:04:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122604 conditions, 30452 events. 22303/30452 cut-off events. For 171215/171351 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 185884 event pairs, 8744 based on Foata normal form. 19/29702 useless extension candidates. Maximal degree in co-relation 122553. Up to 29003 conditions per place. [2024-06-27 22:04:30,102 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 218 selfloop transitions, 91 changer transitions 0/323 dead transitions. [2024-06-27 22:04:30,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 323 transitions, 3476 flow [2024-06-27 22:04:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2024-06-27 22:04:30,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781544256120528 [2024-06-27 22:04:30,104 INFO L175 Difference]: Start difference. First operand has 129 places, 201 transitions, 2033 flow. Second operand 9 states and 307 transitions. [2024-06-27 22:04:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 323 transitions, 3476 flow [2024-06-27 22:04:30,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 323 transitions, 3222 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:30,425 INFO L231 Difference]: Finished difference. Result has 135 places, 245 transitions, 2623 flow [2024-06-27 22:04:30,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2623, PETRI_PLACES=135, PETRI_TRANSITIONS=245} [2024-06-27 22:04:30,426 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 68 predicate places. [2024-06-27 22:04:30,426 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 245 transitions, 2623 flow [2024-06-27 22:04:30,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:30,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:30,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:04:30,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:30,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash -73686117, now seen corresponding path program 6 times [2024-06-27 22:04:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242251719] [2024-06-27 22:04:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242251719] [2024-06-27 22:04:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242251719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518078679] [2024-06-27 22:04:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:31,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 22:04:31,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 245 transitions, 2623 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:31,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:31,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 22:04:31,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:36,057 INFO L124 PetriNetUnfolderBase]: 22446/30704 cut-off events. [2024-06-27 22:04:36,058 INFO L125 PetriNetUnfolderBase]: For 201326/201502 co-relation queries the response was YES. [2024-06-27 22:04:36,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127283 conditions, 30704 events. 22446/30704 cut-off events. For 201326/201502 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 188305 event pairs, 8804 based on Foata normal form. 100/30019 useless extension candidates. Maximal degree in co-relation 127229. Up to 29006 conditions per place. [2024-06-27 22:04:36,618 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 140 selfloop transitions, 183 changer transitions 0/337 dead transitions. [2024-06-27 22:04:36,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 337 transitions, 3732 flow [2024-06-27 22:04:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 312 transitions. [2024-06-27 22:04:36,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875706214689266 [2024-06-27 22:04:36,619 INFO L175 Difference]: Start difference. First operand has 135 places, 245 transitions, 2623 flow. Second operand 9 states and 312 transitions. [2024-06-27 22:04:36,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 337 transitions, 3732 flow [2024-06-27 22:04:37,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 337 transitions, 3572 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:37,029 INFO L231 Difference]: Finished difference. Result has 143 places, 269 transitions, 3167 flow [2024-06-27 22:04:37,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3167, PETRI_PLACES=143, PETRI_TRANSITIONS=269} [2024-06-27 22:04:37,030 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 76 predicate places. [2024-06-27 22:04:37,030 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 269 transitions, 3167 flow [2024-06-27 22:04:37,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-06-27 22:04:37,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:37,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:04:37,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:04:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1669495793, now seen corresponding path program 1 times [2024-06-27 22:04:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153013566] [2024-06-27 22:04:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153013566] [2024-06-27 22:04:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153013566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425393131] [2024-06-27 22:04:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:38,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 22:04:38,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 269 transitions, 3167 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2024-06-27 22:04:38,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:38,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 22:04:38,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand