./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix036.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/mix036.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix036.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 18:30:44,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:30:45,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:30:45,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:30:45,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:30:45,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:30:45,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:30:45,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:30:45,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:30:45,086 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:30:45,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:30:45,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:30:45,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:30:45,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:30:45,088 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:30:45,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:30:45,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:30:45,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:30:45,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:30:45,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:30:45,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:30:45,091 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:30:45,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:30:45,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:30:45,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:30:45,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:30:45,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:30:45,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:30:45,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:30:45,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:30:45,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:30:45,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:30:45,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:30:45,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:30:45,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:30:45,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:30:45,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:30:45,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:30:45,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:30:45,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:30:45,095 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:30:45,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:30:45,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:30:45,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:30:45,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:30:45,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:30:45,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:30:45,330 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:30:45,331 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:30:45,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix036.oepc.yml/witness.yml [2024-06-27 18:30:45,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:30:45,518 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:30:45,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-06-27 18:30:46,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:30:46,760 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:30:46,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-06-27 18:30:46,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ebe6214/0cd2e9437f804f39b2c9082c6d9e31c0/FLAGbf7ae3a8a [2024-06-27 18:30:47,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ebe6214/0cd2e9437f804f39b2c9082c6d9e31c0 [2024-06-27 18:30:47,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:30:47,091 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:30:47,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:30:47,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:30:47,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:30:47,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:30:45" (1/2) ... [2024-06-27 18:30:47,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36460e1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:30:47, skipping insertion in model container [2024-06-27 18:30:47,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:30:45" (1/2) ... [2024-06-27 18:30:47,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6338158f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:30:47, skipping insertion in model container [2024-06-27 18:30:47,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:30:47" (2/2) ... [2024-06-27 18:30:47,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36460e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47, skipping insertion in model container [2024-06-27 18:30:47,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:30:47" (2/2) ... [2024-06-27 18:30:47,099 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:30:47,209 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:30:47,210 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || b$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:30:47,210 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || b$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:30:47,211 INFO L97 edCorrectnessWitness]: Location invariant before [L881-L881] ((((((((((((((((((((((((! multithreaded || b$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:30:47,211 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || b$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:30:47,211 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:30:47,211 INFO L106 edCorrectnessWitness]: ghost_update [L874-L874] multithreaded = 1; [2024-06-27 18:30:47,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:30:47,394 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/mix036.oepc.i[945,958] [2024-06-27 18:30:47,576 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:30:47,586 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:30:47,617 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/mix036.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:30:47,702 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:30:47,733 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:30:47,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47 WrapperNode [2024-06-27 18:30:47,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:30:47,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:30:47,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:30:47,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:30:47,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,776 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2024-06-27 18:30:47,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:30:47,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:30:47,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:30:47,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:30:47,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,800 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:30:47,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:30:47,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:30:47,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:30:47,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:30:47,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (1/1) ... [2024-06-27 18:30:47,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:30:47,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:30:47,851 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 18:30:47,869 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 18:30:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:30:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:30:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:30:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:30:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:30:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:30:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:30:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:30:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:30:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:30:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:30:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:30:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:30:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:30:47,894 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 18:30:48,060 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:30:48,061 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:30:48,392 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:30:48,392 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:30:48,576 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:30:48,576 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:30:48,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:30:48 BoogieIcfgContainer [2024-06-27 18:30:48,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:30:48,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:30:48,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:30:48,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:30:48,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:30:45" (1/4) ... [2024-06-27 18:30:48,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57de7454 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:30:48, skipping insertion in model container [2024-06-27 18:30:48,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:30:47" (2/4) ... [2024-06-27 18:30:48,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57de7454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:30:48, skipping insertion in model container [2024-06-27 18:30:48,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:30:47" (3/4) ... [2024-06-27 18:30:48,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57de7454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:30:48, skipping insertion in model container [2024-06-27 18:30:48,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:30:48" (4/4) ... [2024-06-27 18:30:48,585 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2024-06-27 18:30:48,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:30:48,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:30:48,599 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:30:48,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:30:48,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:30:48,705 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 18:30:48,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:30:48,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-27 18:30:48,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:30:48,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 18:30:48,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:30:48,730 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;@43aa290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:30:48,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:30:48,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:30:48,734 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:30:48,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:30:48,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:48,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:30:48,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:30:48,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 386075766, now seen corresponding path program 1 times [2024-06-27 18:30:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645219962] [2024-06-27 18:30:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:49,635 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 18:30:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645219962] [2024-06-27 18:30:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645219962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:30:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236515740] [2024-06-27 18:30:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:49,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:30:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:30:49,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:30:49,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:30:49,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:30:49,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:49,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:30:49,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:52,986 INFO L124 PetriNetUnfolderBase]: 24798/36364 cut-off events. [2024-06-27 18:30:52,987 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 18:30:53,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69633 conditions, 36364 events. 24798/36364 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 252824 event pairs, 20224 based on Foata normal form. 901/34639 useless extension candidates. Maximal degree in co-relation 69620. Up to 32874 conditions per place. [2024-06-27 18:30:53,199 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 52 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 18:30:53,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 283 flow [2024-06-27 18:30:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:30:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:30:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-27 18:30:53,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836158192090396 [2024-06-27 18:30:53,210 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 121 transitions. [2024-06-27 18:30:53,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 283 flow [2024-06-27 18:30:53,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:30:53,214 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-27 18:30:53,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-27 18:30:53,218 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:30:53,218 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-27 18:30:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:30:53,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:53,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:30:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:30:53,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:30:53,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash 386076420, now seen corresponding path program 1 times [2024-06-27 18:30:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:53,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107806479] [2024-06-27 18:30:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:53,256 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 18:30:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107806479] [2024-06-27 18:30:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107806479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:53,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:30:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668412230] [2024-06-27 18:30:53,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:53,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:30:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:30:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:30:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-06-27 18:30:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-06-27 18:30:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:54,274 INFO L124 PetriNetUnfolderBase]: 5221/8977 cut-off events. [2024-06-27 18:30:54,275 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-27 18:30:54,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17277 conditions, 8977 events. 5221/8977 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 69963 event pairs, 3410 based on Foata normal form. 0/8254 useless extension candidates. Maximal degree in co-relation 17265. Up to 6080 conditions per place. [2024-06-27 18:30:54,328 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-06-27 18:30:54,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 297 flow [2024-06-27 18:30:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:30:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:30:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-06-27 18:30:54,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966101694915254 [2024-06-27 18:30:54,330 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 141 transitions. [2024-06-27 18:30:54,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 297 flow [2024-06-27 18:30:54,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:30:54,334 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-06-27 18:30:54,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-27 18:30:54,335 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:30:54,335 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-06-27 18:30:54,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:54,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:54,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:30:54,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:30:54,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1651668340, now seen corresponding path program 1 times [2024-06-27 18:30:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314978451] [2024-06-27 18:30:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:55,019 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 18:30:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314978451] [2024-06-27 18:30:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314978451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:55,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:55,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:30:55,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031664037] [2024-06-27 18:30:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:55,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:30:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:30:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:30:55,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:30:55,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 18:30:55,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:55,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:30:55,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:57,618 INFO L124 PetriNetUnfolderBase]: 20443/30075 cut-off events. [2024-06-27 18:30:57,618 INFO L125 PetriNetUnfolderBase]: For 7309/7309 co-relation queries the response was YES. [2024-06-27 18:30:57,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64831 conditions, 30075 events. 20443/30075 cut-off events. For 7309/7309 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 204006 event pairs, 14259 based on Foata normal form. 4/29029 useless extension candidates. Maximal degree in co-relation 64818. Up to 27146 conditions per place. [2024-06-27 18:30:57,737 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 64 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-06-27 18:30:57,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 402 flow [2024-06-27 18:30:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:30:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:30:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-27 18:30:57,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-06-27 18:30:57,739 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 152 transitions. [2024-06-27 18:30:57,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 402 flow [2024-06-27 18:30:57,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:57,742 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-06-27 18:30:57,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-27 18:30:57,743 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 18:30:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-06-27 18:30:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 18:30:57,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:57,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:57,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:30:57,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:30:57,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1884577165, now seen corresponding path program 1 times [2024-06-27 18:30:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:57,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167462760] [2024-06-27 18:30:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:58,801 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 18:30:58,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:58,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167462760] [2024-06-27 18:30:58,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167462760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:58,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:58,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:30:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694246927] [2024-06-27 18:30:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:58,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:30:58,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:30:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:30:58,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:30:58,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:58,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:58,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:30:58,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:01,425 INFO L124 PetriNetUnfolderBase]: 21331/29677 cut-off events. [2024-06-27 18:31:01,425 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-06-27 18:31:01,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71706 conditions, 29677 events. 21331/29677 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 184678 event pairs, 11461 based on Foata normal form. 4/29294 useless extension candidates. Maximal degree in co-relation 71691. Up to 28263 conditions per place. [2024-06-27 18:31:01,576 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 89 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-27 18:31:01,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 684 flow [2024-06-27 18:31:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:31:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:31:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-06-27 18:31:01,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-06-27 18:31:01,579 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 218 transitions. [2024-06-27 18:31:01,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 684 flow [2024-06-27 18:31:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 660 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:31:01,586 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 394 flow [2024-06-27 18:31:01,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 18:31:01,587 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-27 18:31:01,587 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 394 flow [2024-06-27 18:31:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:01,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:01,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:31:01,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:31:01,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1707651578, now seen corresponding path program 1 times [2024-06-27 18:31:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868985629] [2024-06-27 18:31:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:02,762 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 18:31:02,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868985629] [2024-06-27 18:31:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868985629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:02,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:31:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169213884] [2024-06-27 18:31:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:02,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:31:02,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:31:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:31:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:31:02,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:02,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:02,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:31:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:05,539 INFO L124 PetriNetUnfolderBase]: 21315/29661 cut-off events. [2024-06-27 18:31:05,540 INFO L125 PetriNetUnfolderBase]: For 30644/30644 co-relation queries the response was YES. [2024-06-27 18:31:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80031 conditions, 29661 events. 21315/29661 cut-off events. For 30644/30644 co-relation queries the response was YES. Maximal size of possible extension queue 1089. Compared 184514 event pairs, 9801 based on Foata normal form. 8/29282 useless extension candidates. Maximal degree in co-relation 80012. Up to 28185 conditions per place. [2024-06-27 18:31:05,726 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 99 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-27 18:31:05,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 144 transitions, 830 flow [2024-06-27 18:31:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-06-27 18:31:05,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029055690072639 [2024-06-27 18:31:05,728 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 394 flow. Second operand 7 states and 249 transitions. [2024-06-27 18:31:05,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 144 transitions, 830 flow [2024-06-27 18:31:05,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 797 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 18:31:05,739 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 455 flow [2024-06-27 18:31:05,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-27 18:31:05,739 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-27 18:31:05,740 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 455 flow [2024-06-27 18:31:05,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:05,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:05,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:31:05,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:31:05,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash 815631311, now seen corresponding path program 1 times [2024-06-27 18:31:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:05,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066586257] [2024-06-27 18:31:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:06,657 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 18:31:06,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066586257] [2024-06-27 18:31:06,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066586257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:06,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:06,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:31:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270182141] [2024-06-27 18:31:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:06,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:31:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:31:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:31:06,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:31:06,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:06,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:06,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:31:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:10,106 INFO L124 PetriNetUnfolderBase]: 24752/36607 cut-off events. [2024-06-27 18:31:10,106 INFO L125 PetriNetUnfolderBase]: For 52629/52629 co-relation queries the response was YES. [2024-06-27 18:31:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99495 conditions, 36607 events. 24752/36607 cut-off events. For 52629/52629 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 255495 event pairs, 13370 based on Foata normal form. 6/35620 useless extension candidates. Maximal degree in co-relation 99473. Up to 32760 conditions per place. [2024-06-27 18:31:10,348 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 85 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-27 18:31:10,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 741 flow [2024-06-27 18:31:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:31:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:31:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 18:31:10,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288135593220339 [2024-06-27 18:31:10,350 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 455 flow. Second operand 5 states and 156 transitions. [2024-06-27 18:31:10,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 741 flow [2024-06-27 18:31:10,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 665 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:10,363 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 453 flow [2024-06-27 18:31:10,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-27 18:31:10,366 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-27 18:31:10,366 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 453 flow [2024-06-27 18:31:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:10,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:10,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:10,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:31:10,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:31:10,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1322369813, now seen corresponding path program 1 times [2024-06-27 18:31:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:10,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365958843] [2024-06-27 18:31:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:11,473 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 18:31:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365958843] [2024-06-27 18:31:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365958843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:31:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045505157] [2024-06-27 18:31:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:11,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:31:11,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:31:11,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:31:11,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:31:11,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:11,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:11,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:31:11,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:15,412 INFO L124 PetriNetUnfolderBase]: 24882/36660 cut-off events. [2024-06-27 18:31:15,413 INFO L125 PetriNetUnfolderBase]: For 70634/70634 co-relation queries the response was YES. [2024-06-27 18:31:15,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106469 conditions, 36660 events. 24882/36660 cut-off events. For 70634/70634 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 251481 event pairs, 11905 based on Foata normal form. 6/35520 useless extension candidates. Maximal degree in co-relation 106445. Up to 32834 conditions per place. [2024-06-27 18:31:15,635 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 107 selfloop transitions, 23 changer transitions 0/142 dead transitions. [2024-06-27 18:31:15,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 142 transitions, 956 flow [2024-06-27 18:31:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:31:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:31:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-27 18:31:15,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2024-06-27 18:31:15,637 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 453 flow. Second operand 6 states and 195 transitions. [2024-06-27 18:31:15,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 142 transitions, 956 flow [2024-06-27 18:31:15,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 142 transitions, 895 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:15,648 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 598 flow [2024-06-27 18:31:15,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-27 18:31:15,648 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-06-27 18:31:15,648 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 598 flow [2024-06-27 18:31:15,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:15,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:15,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:15,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:31:15,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:31:15,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2136744997, now seen corresponding path program 2 times [2024-06-27 18:31:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:15,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041982152] [2024-06-27 18:31:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:15,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:16,895 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 18:31:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041982152] [2024-06-27 18:31:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041982152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:31:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958490052] [2024-06-27 18:31:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:31:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:31:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:31:16,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:31:16,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 598 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:16,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:16,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:31:16,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:20,763 INFO L124 PetriNetUnfolderBase]: 24864/36764 cut-off events. [2024-06-27 18:31:20,764 INFO L125 PetriNetUnfolderBase]: For 99253/99253 co-relation queries the response was YES. [2024-06-27 18:31:20,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116004 conditions, 36764 events. 24864/36764 cut-off events. For 99253/99253 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 256520 event pairs, 13031 based on Foata normal form. 6/35774 useless extension candidates. Maximal degree in co-relation 115977. Up to 32892 conditions per place. [2024-06-27 18:31:21,238 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 105 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2024-06-27 18:31:21,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 133 transitions, 926 flow [2024-06-27 18:31:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:31:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:31:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 18:31:21,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225988700564972 [2024-06-27 18:31:21,242 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 598 flow. Second operand 6 states and 185 transitions. [2024-06-27 18:31:21,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 133 transitions, 926 flow [2024-06-27 18:31:21,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 133 transitions, 886 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:31:21,289 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 601 flow [2024-06-27 18:31:21,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=601, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-06-27 18:31:21,290 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-06-27 18:31:21,290 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 601 flow [2024-06-27 18:31:21,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:21,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:21,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:21,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:31:21,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:31:21,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -77952810, now seen corresponding path program 1 times [2024-06-27 18:31:21,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:21,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231243410] [2024-06-27 18:31:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:21,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:22,566 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 18:31:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231243410] [2024-06-27 18:31:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231243410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487376327] [2024-06-27 18:31:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:22,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:31:22,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 18:31:22,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:22,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:31:22,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand