./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe027_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe027_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_power.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/safe027_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:05:34,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:05:34,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:05:34,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:05:34,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:05:34,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:05:34,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:05:34,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:05:34,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:05:34,964 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:05:34,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:05:34,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:05:34,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:05:34,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:05:34,967 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:05:34,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:05:34,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:05:34,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:05:34,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:05:34,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:05:34,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:05:34,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:05:34,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:05:34,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:05:34,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:05:34,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:05:34,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:05:34,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:05:34,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:05:34,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:05:34,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:05:34,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:05:34,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:34,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:05:34,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:05:34,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:05:34,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:05:34,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:05:34,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:05:35,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:05:35,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:05:35,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:05:35,206 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:05:35,207 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:05:35,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe027_power.oepc.yml/witness.yml [2024-06-27 19:05:35,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:05:35,481 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:05:35,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_power.oepc.i [2024-06-27 19:05:36,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:05:36,631 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:05:36,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_power.oepc.i [2024-06-27 19:05:36,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c8f5ff3/5821e389f45a4316a10530668a1341da/FLAGfae81f942 [2024-06-27 19:05:36,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c8f5ff3/5821e389f45a4316a10530668a1341da [2024-06-27 19:05:36,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:05:36,666 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:05:36,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:36,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:05:36,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:05:36,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:35" (1/2) ... [2024-06-27 19:05:36,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531389bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:36, skipping insertion in model container [2024-06-27 19:05:36,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:35" (1/2) ... [2024-06-27 19:05:36,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@acd5c52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:36, skipping insertion in model container [2024-06-27 19:05:36,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:36" (2/2) ... [2024-06-27 19:05:36,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531389bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:36, skipping insertion in model container [2024-06-27 19:05:36,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:36" (2/2) ... [2024-06-27 19:05:36,676 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:05:36,855 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:05:36,856 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:05:36,856 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:05:36,856 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:05:36,856 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:05:36,857 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:05:36,857 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-27 19:05:36,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:05:37,027 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/safe027_power.oepc.i[995,1008] [2024-06-27 19:05:37,168 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:37,177 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:05:37,210 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/safe027_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:05:37,359 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:37,399 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:05:37,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37 WrapperNode [2024-06-27 19:05:37,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:37,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:37,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:05:37,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:05:37,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,487 INFO L138 Inliner]: procedures = 176, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 196 [2024-06-27 19:05:37,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:37,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:05:37,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:05:37,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:05:37,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,526 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-27 19:05:37,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:05:37,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:05:37,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:05:37,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:05:37,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (1/1) ... [2024-06-27 19:05:37,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:05:37,585 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 19:05:37,604 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 19:05:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:05:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:05:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:05:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:05:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:05:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:05:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:05:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:05:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:05:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:05:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:05:37,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:05:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:05:37,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:05:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:05:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:05:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:05:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:05:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:05:37,623 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 19:05:37,791 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:05:37,794 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:05:38,286 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:05:38,286 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:05:38,624 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:05:38,625 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:05:38,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:38 BoogieIcfgContainer [2024-06-27 19:05:38,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:05:38,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:05:38,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:05:38,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:05:38,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:35" (1/4) ... [2024-06-27 19:05:38,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d36ef0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:05:38, skipping insertion in model container [2024-06-27 19:05:38,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:05:36" (2/4) ... [2024-06-27 19:05:38,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d36ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:05:38, skipping insertion in model container [2024-06-27 19:05:38,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:37" (3/4) ... [2024-06-27 19:05:38,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d36ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:05:38, skipping insertion in model container [2024-06-27 19:05:38,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:38" (4/4) ... [2024-06-27 19:05:38,633 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.oepc.i [2024-06-27 19:05:38,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:05:38,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:05:38,648 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:05:38,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:05:38,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:05:38,781 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 19:05:38,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:38,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 19:05:38,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:05:38,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-27 19:05:38,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:05:38,809 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;@732d86d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:05:38,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:05:38,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:05:38,815 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:05:38,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:38,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:38,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:05:38,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:38,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash 756524470, now seen corresponding path program 1 times [2024-06-27 19:05:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515528326] [2024-06-27 19:05:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:38,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:40,813 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 19:05:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515528326] [2024-06-27 19:05:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515528326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:40,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:05:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000431702] [2024-06-27 19:05:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:05:40,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:05:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:05:40,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 19:05:40,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:05:40,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:40,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 19:05:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:43,205 INFO L124 PetriNetUnfolderBase]: 9303/13494 cut-off events. [2024-06-27 19:05:43,205 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-27 19:05:43,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26268 conditions, 13494 events. 9303/13494 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 83314 event pairs, 6375 based on Foata normal form. 0/13069 useless extension candidates. Maximal degree in co-relation 26255. Up to 12561 conditions per place. [2024-06-27 19:05:43,288 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 19:05:43,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 289 flow [2024-06-27 19:05:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:05:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:05:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 19:05:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-27 19:05:43,299 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 116 transitions. [2024-06-27 19:05:43,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 289 flow [2024-06-27 19:05:43,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:43,307 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-27 19:05:43,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-27 19:05:43,312 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-27 19:05:43,312 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-27 19:05:43,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:05:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:43,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:05:43,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:43,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1170816133, now seen corresponding path program 1 times [2024-06-27 19:05:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603592762] [2024-06-27 19:05:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:45,813 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 19:05:45,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:45,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603592762] [2024-06-27 19:05:45,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603592762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:45,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:45,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:05:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919807234] [2024-06-27 19:05:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:45,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:05:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:45,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:05:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:05:45,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 19:05:45,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:45,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:45,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 19:05:45,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:48,067 INFO L124 PetriNetUnfolderBase]: 9286/12913 cut-off events. [2024-06-27 19:05:48,067 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2024-06-27 19:05:48,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29448 conditions, 12913 events. 9286/12913 cut-off events. For 2410/2410 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 75323 event pairs, 4112 based on Foata normal form. 6/12911 useless extension candidates. Maximal degree in co-relation 29436. Up to 12458 conditions per place. [2024-06-27 19:05:48,139 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 77 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 19:05:48,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 456 flow [2024-06-27 19:05:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:05:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:05:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-27 19:05:48,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-06-27 19:05:48,142 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 4 states and 158 transitions. [2024-06-27 19:05:48,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 456 flow [2024-06-27 19:05:48,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:48,145 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 237 flow [2024-06-27 19:05:48,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-27 19:05:48,146 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-06-27 19:05:48,146 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 237 flow [2024-06-27 19:05:48,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:48,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:48,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:05:48,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:48,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash 355398610, now seen corresponding path program 1 times [2024-06-27 19:05:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:48,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004941615] [2024-06-27 19:05:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:51,682 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 19:05:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004941615] [2024-06-27 19:05:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004941615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:51,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:51,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469583398] [2024-06-27 19:05:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:51,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 19:05:51,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 19:05:51,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:51,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 19:05:51,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:54,747 INFO L124 PetriNetUnfolderBase]: 11975/16495 cut-off events. [2024-06-27 19:05:54,748 INFO L125 PetriNetUnfolderBase]: For 9941/9941 co-relation queries the response was YES. [2024-06-27 19:05:54,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42579 conditions, 16495 events. 11975/16495 cut-off events. For 9941/9941 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 95230 event pairs, 3693 based on Foata normal form. 24/16513 useless extension candidates. Maximal degree in co-relation 42564. Up to 15618 conditions per place. [2024-06-27 19:05:54,843 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 117 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-27 19:05:54,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 730 flow [2024-06-27 19:05:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-06-27 19:05:54,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-27 19:05:54,845 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 237 flow. Second operand 6 states and 232 transitions. [2024-06-27 19:05:54,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 730 flow [2024-06-27 19:05:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:54,855 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 326 flow [2024-06-27 19:05:54,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-06-27 19:05:54,856 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-06-27 19:05:54,856 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 326 flow [2024-06-27 19:05:54,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 19:05:54,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:54,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:54,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:05:54,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:54,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash 649496282, now seen corresponding path program 1 times [2024-06-27 19:05:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:54,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792225132] [2024-06-27 19:05:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:56,457 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 19:05:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792225132] [2024-06-27 19:05:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792225132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:56,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:56,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526033036] [2024-06-27 19:05:56,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:56,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:05:56,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:56,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:56,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:05:56,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:59,666 INFO L124 PetriNetUnfolderBase]: 15103/21580 cut-off events. [2024-06-27 19:05:59,666 INFO L125 PetriNetUnfolderBase]: For 20689/20689 co-relation queries the response was YES. [2024-06-27 19:05:59,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57973 conditions, 21580 events. 15103/21580 cut-off events. For 20689/20689 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 132145 event pairs, 7616 based on Foata normal form. 3/21580 useless extension candidates. Maximal degree in co-relation 57953. Up to 20213 conditions per place. [2024-06-27 19:05:59,807 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 87 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-27 19:05:59,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 651 flow [2024-06-27 19:05:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-27 19:05:59,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-27 19:05:59,809 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 326 flow. Second operand 5 states and 153 transitions. [2024-06-27 19:05:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 651 flow [2024-06-27 19:05:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:59,820 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 405 flow [2024-06-27 19:05:59,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-27 19:05:59,821 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2024-06-27 19:05:59,821 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 405 flow [2024-06-27 19:05:59,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:59,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:59,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:59,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:05:59,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:59,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash 308516013, now seen corresponding path program 1 times [2024-06-27 19:05:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580714592] [2024-06-27 19:05:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:02,517 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 19:06:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580714592] [2024-06-27 19:06:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580714592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:02,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:06:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454498214] [2024-06-27 19:06:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:06:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:06:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:06:02,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:02,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:02,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:02,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:02,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:06,202 INFO L124 PetriNetUnfolderBase]: 15154/20879 cut-off events. [2024-06-27 19:06:06,203 INFO L125 PetriNetUnfolderBase]: For 29097/29097 co-relation queries the response was YES. [2024-06-27 19:06:06,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62182 conditions, 20879 events. 15154/20879 cut-off events. For 29097/29097 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 120128 event pairs, 6441 based on Foata normal form. 3/20876 useless extension candidates. Maximal degree in co-relation 62159. Up to 20170 conditions per place. [2024-06-27 19:06:06,340 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 116 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-27 19:06:06,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 961 flow [2024-06-27 19:06:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:06:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:06:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 19:06:06,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2024-06-27 19:06:06,342 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 405 flow. Second operand 6 states and 197 transitions. [2024-06-27 19:06:06,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 961 flow [2024-06-27 19:06:06,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 151 transitions, 947 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 19:06:06,367 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 606 flow [2024-06-27 19:06:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-06-27 19:06:06,370 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-06-27 19:06:06,370 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 606 flow [2024-06-27 19:06:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:06,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:06,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:06:06,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:06,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1739964239, now seen corresponding path program 2 times [2024-06-27 19:06:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991147160] [2024-06-27 19:06:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:09,011 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 19:06:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:09,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991147160] [2024-06-27 19:06:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991147160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:06:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285889151] [2024-06-27 19:06:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:06:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:06:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:06:09,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:09,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:09,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:09,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:09,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:12,715 INFO L124 PetriNetUnfolderBase]: 15145/20883 cut-off events. [2024-06-27 19:06:12,715 INFO L125 PetriNetUnfolderBase]: For 42821/42836 co-relation queries the response was YES. [2024-06-27 19:06:12,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68093 conditions, 20883 events. 15145/20883 cut-off events. For 42821/42836 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 120438 event pairs, 6483 based on Foata normal form. 13/20890 useless extension candidates. Maximal degree in co-relation 68065. Up to 20161 conditions per place. [2024-06-27 19:06:12,853 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 110 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-27 19:06:12,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 1027 flow [2024-06-27 19:06:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:06:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:06:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-27 19:06:12,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 19:06:12,855 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 606 flow. Second operand 6 states and 190 transitions. [2024-06-27 19:06:12,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 1027 flow [2024-06-27 19:06:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1007 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 19:06:12,922 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 688 flow [2024-06-27 19:06:12,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-06-27 19:06:12,923 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2024-06-27 19:06:12,923 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 688 flow [2024-06-27 19:06:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:12,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:12,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:06:12,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:12,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1395713145, now seen corresponding path program 1 times [2024-06-27 19:06:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:12,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255054776] [2024-06-27 19:06:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:14,913 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 19:06:14,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:14,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255054776] [2024-06-27 19:06:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255054776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:14,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:14,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:06:14,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099313340] [2024-06-27 19:06:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:14,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:06:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:06:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:06:14,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:14,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 688 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:14,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:14,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:14,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:18,328 INFO L124 PetriNetUnfolderBase]: 15130/21629 cut-off events. [2024-06-27 19:06:18,329 INFO L125 PetriNetUnfolderBase]: For 44459/44459 co-relation queries the response was YES. [2024-06-27 19:06:18,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68707 conditions, 21629 events. 15130/21629 cut-off events. For 44459/44459 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 132749 event pairs, 6907 based on Foata normal form. 6/21632 useless extension candidates. Maximal degree in co-relation 68675. Up to 20193 conditions per place. [2024-06-27 19:06:18,470 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 121 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-27 19:06:18,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 146 transitions, 1096 flow [2024-06-27 19:06:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:06:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:06:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 19:06:18,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2024-06-27 19:06:18,471 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 688 flow. Second operand 6 states and 185 transitions. [2024-06-27 19:06:18,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 146 transitions, 1096 flow [2024-06-27 19:06:18,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 1064 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:18,497 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 739 flow [2024-06-27 19:06:18,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-27 19:06:18,498 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2024-06-27 19:06:18,498 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 739 flow [2024-06-27 19:06:18,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:18,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:18,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:06:18,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash 140053539, now seen corresponding path program 1 times [2024-06-27 19:06:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594616683] [2024-06-27 19:06:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:21,865 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 19:06:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594616683] [2024-06-27 19:06:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594616683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:21,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:21,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:21,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106397594] [2024-06-27 19:06:21,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:21,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:21,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:21,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:21,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:21,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:21,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:25,754 INFO L124 PetriNetUnfolderBase]: 15267/21114 cut-off events. [2024-06-27 19:06:25,754 INFO L125 PetriNetUnfolderBase]: For 57441/57441 co-relation queries the response was YES. [2024-06-27 19:06:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72331 conditions, 21114 events. 15267/21114 cut-off events. For 57441/57441 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 123576 event pairs, 5523 based on Foata normal form. 7/21115 useless extension candidates. Maximal degree in co-relation 72297. Up to 20096 conditions per place. [2024-06-27 19:06:25,901 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 142 selfloop transitions, 32 changer transitions 0/183 dead transitions. [2024-06-27 19:06:25,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 1319 flow [2024-06-27 19:06:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-06-27 19:06:25,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5939849624060151 [2024-06-27 19:06:25,904 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 739 flow. Second operand 7 states and 237 transitions. [2024-06-27 19:06:25,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 1319 flow [2024-06-27 19:06:25,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 183 transitions, 1268 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:25,947 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 810 flow [2024-06-27 19:06:25,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=810, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-06-27 19:06:25,948 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2024-06-27 19:06:25,948 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 810 flow [2024-06-27 19:06:25,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:25,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:25,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:06:25,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:25,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:25,949 INFO L85 PathProgramCache]: Analyzing trace with hash 140058189, now seen corresponding path program 2 times [2024-06-27 19:06:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:25,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145702704] [2024-06-27 19:06:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:25,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:29,229 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 19:06:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:29,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145702704] [2024-06-27 19:06:29,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145702704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:29,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:29,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:29,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219886509] [2024-06-27 19:06:29,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:29,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:29,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 810 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:29,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:33,426 INFO L124 PetriNetUnfolderBase]: 15318/21140 cut-off events. [2024-06-27 19:06:33,427 INFO L125 PetriNetUnfolderBase]: For 72611/72611 co-relation queries the response was YES. [2024-06-27 19:06:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78290 conditions, 21140 events. 15318/21140 cut-off events. For 72611/72611 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 122143 event pairs, 6006 based on Foata normal form. 3/21137 useless extension candidates. Maximal degree in co-relation 78255. Up to 20249 conditions per place. [2024-06-27 19:06:33,544 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 141 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-27 19:06:33,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1537 flow [2024-06-27 19:06:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-06-27 19:06:33,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581453634085213 [2024-06-27 19:06:33,546 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 810 flow. Second operand 7 states and 232 transitions. [2024-06-27 19:06:33,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1537 flow [2024-06-27 19:06:33,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 191 transitions, 1447 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:33,590 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 997 flow [2024-06-27 19:06:33,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=997, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 19:06:33,591 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2024-06-27 19:06:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 997 flow [2024-06-27 19:06:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:33,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:06:33,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:33,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1901044629, now seen corresponding path program 3 times [2024-06-27 19:06:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23972707] [2024-06-27 19:06:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:36,352 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 19:06:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23972707] [2024-06-27 19:06:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23972707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:36,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:36,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85671352] [2024-06-27 19:06:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:36,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:36,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:36,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:36,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:36,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:40,557 INFO L124 PetriNetUnfolderBase]: 15309/21130 cut-off events. [2024-06-27 19:06:40,557 INFO L125 PetriNetUnfolderBase]: For 90283/90283 co-relation queries the response was YES. [2024-06-27 19:06:40,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82865 conditions, 21130 events. 15309/21130 cut-off events. For 90283/90283 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 122043 event pairs, 6025 based on Foata normal form. 3/21123 useless extension candidates. Maximal degree in co-relation 82827. Up to 20240 conditions per place. [2024-06-27 19:06:40,715 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 135 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-27 19:06:40,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 1532 flow [2024-06-27 19:06:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-06-27 19:06:40,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639097744360902 [2024-06-27 19:06:40,716 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 997 flow. Second operand 7 states and 225 transitions. [2024-06-27 19:06:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 1532 flow [2024-06-27 19:06:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 186 transitions, 1483 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:40,775 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 1054 flow [2024-06-27 19:06:40,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1054, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-06-27 19:06:40,776 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 41 predicate places. [2024-06-27 19:06:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 1054 flow [2024-06-27 19:06:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:40,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:40,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:06:40,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:40,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -860386566, now seen corresponding path program 1 times [2024-06-27 19:06:40,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:40,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245619263] [2024-06-27 19:06:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:42,979 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 19:06:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245619263] [2024-06-27 19:06:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245619263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357620567] [2024-06-27 19:06:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:42,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:43,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:43,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 1054 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:43,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:47,830 INFO L124 PetriNetUnfolderBase]: 16218/22358 cut-off events. [2024-06-27 19:06:47,830 INFO L125 PetriNetUnfolderBase]: For 101906/101906 co-relation queries the response was YES. [2024-06-27 19:06:47,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89320 conditions, 22358 events. 16218/22358 cut-off events. For 101906/101906 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 128982 event pairs, 6062 based on Foata normal form. 18/22370 useless extension candidates. Maximal degree in co-relation 89280. Up to 20996 conditions per place. [2024-06-27 19:06:47,984 INFO L140 encePairwiseOnDemand]: 40/57 looper letters, 194 selfloop transitions, 67 changer transitions 0/270 dead transitions. [2024-06-27 19:06:47,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 270 transitions, 2267 flow [2024-06-27 19:06:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-06-27 19:06:47,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582137161084529 [2024-06-27 19:06:47,987 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 1054 flow. Second operand 11 states and 350 transitions. [2024-06-27 19:06:47,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 270 transitions, 2267 flow [2024-06-27 19:06:48,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 270 transitions, 2170 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:48,076 INFO L231 Difference]: Finished difference. Result has 116 places, 164 transitions, 1573 flow [2024-06-27 19:06:48,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=116, PETRI_TRANSITIONS=164} [2024-06-27 19:06:48,077 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2024-06-27 19:06:48,077 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 164 transitions, 1573 flow [2024-06-27 19:06:48,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:48,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:48,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:48,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:06:48,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:48,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash 131189132, now seen corresponding path program 2 times [2024-06-27 19:06:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:48,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568549607] [2024-06-27 19:06:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:51,092 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 19:06:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568549607] [2024-06-27 19:06:51,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568549607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:51,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:51,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970287370] [2024-06-27 19:06:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:51,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:51,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 164 transitions, 1573 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:51,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:51,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:51,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:55,493 INFO L124 PetriNetUnfolderBase]: 16304/22496 cut-off events. [2024-06-27 19:06:55,494 INFO L125 PetriNetUnfolderBase]: For 141089/141089 co-relation queries the response was YES. [2024-06-27 19:06:55,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100593 conditions, 22496 events. 16304/22496 cut-off events. For 141089/141089 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 130528 event pairs, 5971 based on Foata normal form. 6/22496 useless extension candidates. Maximal degree in co-relation 100546. Up to 21461 conditions per place. [2024-06-27 19:06:55,679 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 182 selfloop transitions, 49 changer transitions 0/240 dead transitions. [2024-06-27 19:06:55,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 240 transitions, 2354 flow [2024-06-27 19:06:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-27 19:06:55,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568922305764411 [2024-06-27 19:06:55,682 INFO L175 Difference]: Start difference. First operand has 116 places, 164 transitions, 1573 flow. Second operand 7 states and 227 transitions. [2024-06-27 19:06:55,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 240 transitions, 2354 flow [2024-06-27 19:06:55,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 240 transitions, 2281 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:55,908 INFO L231 Difference]: Finished difference. Result has 121 places, 169 transitions, 1682 flow [2024-06-27 19:06:55,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1682, PETRI_PLACES=121, PETRI_TRANSITIONS=169} [2024-06-27 19:06:55,909 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2024-06-27 19:06:55,909 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 169 transitions, 1682 flow [2024-06-27 19:06:55,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:55,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:55,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:55,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:06:55,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:55,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1197165818, now seen corresponding path program 3 times [2024-06-27 19:06:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947984226] [2024-06-27 19:06:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:59,125 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 19:06:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947984226] [2024-06-27 19:06:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947984226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:59,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450596010] [2024-06-27 19:06:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:59,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:06:59,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 169 transitions, 1682 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:06:59,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:59,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:06:59,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:03,975 INFO L124 PetriNetUnfolderBase]: 16390/22628 cut-off events. [2024-06-27 19:07:03,975 INFO L125 PetriNetUnfolderBase]: For 160919/160934 co-relation queries the response was YES. [2024-06-27 19:07:04,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104671 conditions, 22628 events. 16390/22628 cut-off events. For 160919/160934 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 131171 event pairs, 6009 based on Foata normal form. 16/22635 useless extension candidates. Maximal degree in co-relation 104622. Up to 21641 conditions per place. [2024-06-27 19:07:04,165 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 186 selfloop transitions, 47 changer transitions 0/242 dead transitions. [2024-06-27 19:07:04,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 242 transitions, 2462 flow [2024-06-27 19:07:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:07:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:07:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 19:07:04,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588972431077694 [2024-06-27 19:07:04,169 INFO L175 Difference]: Start difference. First operand has 121 places, 169 transitions, 1682 flow. Second operand 7 states and 223 transitions. [2024-06-27 19:07:04,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 242 transitions, 2462 flow [2024-06-27 19:07:04,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 242 transitions, 2344 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:04,368 INFO L231 Difference]: Finished difference. Result has 123 places, 172 transitions, 1719 flow [2024-06-27 19:07:04,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1719, PETRI_PLACES=123, PETRI_TRANSITIONS=172} [2024-06-27 19:07:04,368 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2024-06-27 19:07:04,368 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 172 transitions, 1719 flow [2024-06-27 19:07:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:04,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:04,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:07:04,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:04,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1250572120, now seen corresponding path program 4 times [2024-06-27 19:07:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:04,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599499568] [2024-06-27 19:07:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:07,199 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 19:07:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599499568] [2024-06-27 19:07:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599499568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310724280] [2024-06-27 19:07:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:07,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:07,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:07,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 172 transitions, 1719 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:07,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:11,565 INFO L124 PetriNetUnfolderBase]: 16375/22621 cut-off events. [2024-06-27 19:07:11,565 INFO L125 PetriNetUnfolderBase]: For 179839/179854 co-relation queries the response was YES. [2024-06-27 19:07:11,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107272 conditions, 22621 events. 16375/22621 cut-off events. For 179839/179854 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 131336 event pairs, 5486 based on Foata normal form. 16/22628 useless extension candidates. Maximal degree in co-relation 107222. Up to 21342 conditions per place. [2024-06-27 19:07:11,816 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 180 selfloop transitions, 59 changer transitions 0/248 dead transitions. [2024-06-27 19:07:11,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 248 transitions, 2566 flow [2024-06-27 19:07:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:07:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:07:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-27 19:07:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-27 19:07:11,817 INFO L175 Difference]: Start difference. First operand has 123 places, 172 transitions, 1719 flow. Second operand 7 states and 224 transitions. [2024-06-27 19:07:11,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 248 transitions, 2566 flow [2024-06-27 19:07:12,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 248 transitions, 2433 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:12,110 INFO L231 Difference]: Finished difference. Result has 126 places, 178 transitions, 1844 flow [2024-06-27 19:07:12,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1844, PETRI_PLACES=126, PETRI_TRANSITIONS=178} [2024-06-27 19:07:12,110 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 63 predicate places. [2024-06-27 19:07:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 1844 flow [2024-06-27 19:07:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:12,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:12,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:12,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:07:12,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:12,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1863128918, now seen corresponding path program 1 times [2024-06-27 19:07:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430445307] [2024-06-27 19:07:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:17,590 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 19:07:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430445307] [2024-06-27 19:07:17,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430445307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:17,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:17,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:07:17,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897633137] [2024-06-27 19:07:17,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:17,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:07:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:17,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:07:17,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:07:17,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:17,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 178 transitions, 1844 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:17,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:17,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:17,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:23,499 INFO L124 PetriNetUnfolderBase]: 19395/26976 cut-off events. [2024-06-27 19:07:23,499 INFO L125 PetriNetUnfolderBase]: For 272588/272588 co-relation queries the response was YES. [2024-06-27 19:07:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134401 conditions, 26976 events. 19395/26976 cut-off events. For 272588/272588 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 163378 event pairs, 4823 based on Foata normal form. 78/27048 useless extension candidates. Maximal degree in co-relation 134349. Up to 22096 conditions per place. [2024-06-27 19:07:23,737 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 252 selfloop transitions, 47 changer transitions 0/308 dead transitions. [2024-06-27 19:07:23,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 308 transitions, 3084 flow [2024-06-27 19:07:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-06-27 19:07:23,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6179337231968811 [2024-06-27 19:07:23,803 INFO L175 Difference]: Start difference. First operand has 126 places, 178 transitions, 1844 flow. Second operand 9 states and 317 transitions. [2024-06-27 19:07:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 308 transitions, 3084 flow [2024-06-27 19:07:24,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 308 transitions, 2981 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 19:07:24,159 INFO L231 Difference]: Finished difference. Result has 133 places, 184 transitions, 1964 flow [2024-06-27 19:07:24,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1964, PETRI_PLACES=133, PETRI_TRANSITIONS=184} [2024-06-27 19:07:24,159 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2024-06-27 19:07:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 184 transitions, 1964 flow [2024-06-27 19:07:24,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:24,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:24,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:07:24,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:24,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -343578634, now seen corresponding path program 2 times [2024-06-27 19:07:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:24,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786466479] [2024-06-27 19:07:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:27,630 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 19:07:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:27,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786466479] [2024-06-27 19:07:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786466479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:27,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:27,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:07:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639667947] [2024-06-27 19:07:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:07:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:07:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:07:27,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:27,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 184 transitions, 1964 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:27,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:27,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:27,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:33,452 INFO L124 PetriNetUnfolderBase]: 19169/26686 cut-off events. [2024-06-27 19:07:33,452 INFO L125 PetriNetUnfolderBase]: For 297366/297366 co-relation queries the response was YES. [2024-06-27 19:07:33,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136040 conditions, 26686 events. 19169/26686 cut-off events. For 297366/297366 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 162025 event pairs, 6173 based on Foata normal form. 92/26772 useless extension candidates. Maximal degree in co-relation 135985. Up to 23810 conditions per place. [2024-06-27 19:07:33,764 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 232 selfloop transitions, 43 changer transitions 0/284 dead transitions. [2024-06-27 19:07:33,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 284 transitions, 2893 flow [2024-06-27 19:07:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:07:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:07:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-06-27 19:07:33,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030701754385965 [2024-06-27 19:07:33,766 INFO L175 Difference]: Start difference. First operand has 133 places, 184 transitions, 1964 flow. Second operand 8 states and 275 transitions. [2024-06-27 19:07:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 284 transitions, 2893 flow [2024-06-27 19:07:34,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 284 transitions, 2810 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:34,226 INFO L231 Difference]: Finished difference. Result has 136 places, 185 transitions, 2003 flow [2024-06-27 19:07:34,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2003, PETRI_PLACES=136, PETRI_TRANSITIONS=185} [2024-06-27 19:07:34,226 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 73 predicate places. [2024-06-27 19:07:34,226 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 185 transitions, 2003 flow [2024-06-27 19:07:34,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:34,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:34,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:07:34,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:34,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash -823348746, now seen corresponding path program 3 times [2024-06-27 19:07:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:34,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047660587] [2024-06-27 19:07:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:38,007 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 19:07:38,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047660587] [2024-06-27 19:07:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047660587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:07:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307758507] [2024-06-27 19:07:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:38,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:07:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:07:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:07:38,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:38,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 185 transitions, 2003 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:38,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:38,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:38,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:43,943 INFO L124 PetriNetUnfolderBase]: 19481/27065 cut-off events. [2024-06-27 19:07:43,943 INFO L125 PetriNetUnfolderBase]: For 285046/285046 co-relation queries the response was YES. [2024-06-27 19:07:44,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137977 conditions, 27065 events. 19481/27065 cut-off events. For 285046/285046 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 163999 event pairs, 6428 based on Foata normal form. 24/27083 useless extension candidates. Maximal degree in co-relation 137920. Up to 25512 conditions per place. [2024-06-27 19:07:44,334 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 209 selfloop transitions, 58 changer transitions 0/276 dead transitions. [2024-06-27 19:07:44,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 276 transitions, 2913 flow [2024-06-27 19:07:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:07:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:07:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2024-06-27 19:07:44,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-06-27 19:07:44,337 INFO L175 Difference]: Start difference. First operand has 136 places, 185 transitions, 2003 flow. Second operand 8 states and 264 transitions. [2024-06-27 19:07:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 276 transitions, 2913 flow [2024-06-27 19:07:44,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 276 transitions, 2832 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:07:44,773 INFO L231 Difference]: Finished difference. Result has 138 places, 187 transitions, 2098 flow [2024-06-27 19:07:44,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2098, PETRI_PLACES=138, PETRI_TRANSITIONS=187} [2024-06-27 19:07:44,774 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 75 predicate places. [2024-06-27 19:07:44,774 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 187 transitions, 2098 flow [2024-06-27 19:07:44,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:44,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:44,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:44,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:07:44,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:44,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash 473974540, now seen corresponding path program 1 times [2024-06-27 19:07:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067284142] [2024-06-27 19:07:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:44,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:48,267 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 19:07:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067284142] [2024-06-27 19:07:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067284142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:48,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:07:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051733593] [2024-06-27 19:07:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:07:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:07:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:07:48,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:48,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 2098 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:07:48,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:48,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:48,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand