./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix027_tso.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/mix027_tso.i ./goblint.2024-06-19_11-23-25.files/protection/mix027_tso.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 18:26:07,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:26:08,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:26:08,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:26:08,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:26:08,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:26:08,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:26:08,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:26:08,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:26:08,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:26:08,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:26:08,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:26:08,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:26:08,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:26:08,191 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:26:08,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:26:08,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:26:08,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:26:08,192 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:26:08,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:26:08,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:26:08,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:26:08,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:26:08,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:26:08,194 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:26:08,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:26:08,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:26:08,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:26:08,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:26:08,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:26:08,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:26:08,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:26:08,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:08,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:26:08,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:26:08,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:26:08,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:26:08,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:26:08,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:26:08,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:26:08,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:26:08,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:26:08,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:26:08,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:26:08,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:26:08,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:26:08,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:26:08,573 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:26:08,576 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:26:08,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix027_tso.yml/witness.yml [2024-06-27 18:26:08,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:26:08,774 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:26:08,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-27 18:26:09,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:26:10,076 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:26:10,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-27 18:26:10,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01dbaeb1d/6eb177f0d93d42abab1793c59a76ee02/FLAG1de0f3658 [2024-06-27 18:26:10,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01dbaeb1d/6eb177f0d93d42abab1793c59a76ee02 [2024-06-27 18:26:10,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:26:10,140 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:26:10,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:10,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:26:10,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:26:10,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:08" (1/2) ... [2024-06-27 18:26:10,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47173357 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:10, skipping insertion in model container [2024-06-27 18:26:10,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:08" (1/2) ... [2024-06-27 18:26:10,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d113e94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:10, skipping insertion in model container [2024-06-27 18:26:10,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:10" (2/2) ... [2024-06-27 18:26:10,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47173357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10, skipping insertion in model container [2024-06-27 18:26:10,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:10" (2/2) ... [2024-06-27 18:26:10,150 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:26:10,280 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:26:10,281 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:26:10,281 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:26:10,281 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:26:10,281 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:26:10,281 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:26:10,281 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-27 18:26:10,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:26:10,482 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/mix027_tso.i[944,957] [2024-06-27 18:26:10,604 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:10,629 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:26:10,666 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/mix027_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:26:10,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:10,788 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:26:10,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10 WrapperNode [2024-06-27 18:26:10,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:10,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:10,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:26:10,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:26:10,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,837 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-06-27 18:26:10,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:10,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:26:10,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:26:10,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:26:10,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,865 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 18:26:10,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:26:10,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:26:10,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:26:10,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:26:10,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (1/1) ... [2024-06-27 18:26:10,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:26:10,914 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 18:26:10,935 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 18:26:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:26:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:26:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:26:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:26:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:26:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:26:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:26:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:26:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:26:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:26:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:26:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:26:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:26:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:26:10,956 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 18:26:11,105 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:26:11,107 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:26:11,447 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:26:11,447 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:26:11,707 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:26:11,707 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:26:11,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:11 BoogieIcfgContainer [2024-06-27 18:26:11,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:26:11,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:26:11,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:26:11,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:26:11,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:08" (1/4) ... [2024-06-27 18:26:11,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ccb314 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:26:11, skipping insertion in model container [2024-06-27 18:26:11,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:26:10" (2/4) ... [2024-06-27 18:26:11,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ccb314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:26:11, skipping insertion in model container [2024-06-27 18:26:11,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:10" (3/4) ... [2024-06-27 18:26:11,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ccb314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:26:11, skipping insertion in model container [2024-06-27 18:26:11,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:11" (4/4) ... [2024-06-27 18:26:11,715 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2024-06-27 18:26:11,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:26:11,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:26:11,729 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:26:11,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:26:11,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:26:11,819 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 18:26:11,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:11,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 18:26:11,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:26:11,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 18:26:11,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:26:11,837 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;@2ee15e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:26:11,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:26:11,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:26:11,840 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:26:11,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:11,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:11,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:26:11,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:11,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 377602831, now seen corresponding path program 1 times [2024-06-27 18:26:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:11,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935780476] [2024-06-27 18:26:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:12,599 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 18:26:12,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935780476] [2024-06-27 18:26:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935780476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:26:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539952164] [2024-06-27 18:26:12,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:26:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:26:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:26:12,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:26:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 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 18:26:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:26:12,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:16,489 INFO L124 PetriNetUnfolderBase]: 29840/42104 cut-off events. [2024-06-27 18:26:16,489 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-27 18:26:16,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82137 conditions, 42104 events. 29840/42104 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 277586 event pairs, 20473 based on Foata normal form. 1081/40838 useless extension candidates. Maximal degree in co-relation 82124. Up to 39493 conditions per place. [2024-06-27 18:26:16,750 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 54 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 18:26:16,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 287 flow [2024-06-27 18:26:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:26:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:26:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 18:26:16,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-27 18:26:16,761 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 117 transitions. [2024-06-27 18:26:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 287 flow [2024-06-27 18:26:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:16,771 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-27 18:26:16,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-27 18:26:16,776 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:26:16,776 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-27 18:26:16,776 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 18:26:16,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:16,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:16,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:26:16,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2099262050, now seen corresponding path program 1 times [2024-06-27 18:26:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163160498] [2024-06-27 18:26:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:17,564 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 18:26:17,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163160498] [2024-06-27 18:26:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163160498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:17,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:17,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:26:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361639843] [2024-06-27 18:26:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:26:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:26:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:26:17,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:26:17,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:26:17,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:26:17,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:21,684 INFO L124 PetriNetUnfolderBase]: 35659/51369 cut-off events. [2024-06-27 18:26:21,685 INFO L125 PetriNetUnfolderBase]: For 7597/7597 co-relation queries the response was YES. [2024-06-27 18:26:21,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109819 conditions, 51369 events. 35659/51369 cut-off events. For 7597/7597 co-relation queries the response was YES. Maximal size of possible extension queue 1810. Compared 354899 event pairs, 28509 based on Foata normal form. 4/48108 useless extension candidates. Maximal degree in co-relation 109807. Up to 47005 conditions per place. [2024-06-27 18:26:21,987 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 70 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-06-27 18:26:21,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 412 flow [2024-06-27 18:26:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:26:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:26:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-27 18:26:21,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422413793103449 [2024-06-27 18:26:21,995 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 149 transitions. [2024-06-27 18:26:21,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 412 flow [2024-06-27 18:26:21,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:26:21,998 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-27 18:26:21,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 18:26:21,999 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 18:26:22,001 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-27 18:26:22,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:26:22,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:22,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:26:22,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:22,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash 652614838, now seen corresponding path program 1 times [2024-06-27 18:26:22,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:22,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098162047] [2024-06-27 18:26:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:22,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:22,603 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 18:26:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098162047] [2024-06-27 18:26:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098162047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:22,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:26:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377960048] [2024-06-27 18:26:22,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:26:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:26:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:26:22,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:26:22,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:26:22,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:22,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:26:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:26,755 INFO L124 PetriNetUnfolderBase]: 35633/51637 cut-off events. [2024-06-27 18:26:26,756 INFO L125 PetriNetUnfolderBase]: For 20372/20372 co-relation queries the response was YES. [2024-06-27 18:26:26,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120835 conditions, 51637 events. 35633/51637 cut-off events. For 20372/20372 co-relation queries the response was YES. Maximal size of possible extension queue 1842. Compared 364190 event pairs, 20815 based on Foata normal form. 8/48323 useless extension candidates. Maximal degree in co-relation 120821. Up to 46930 conditions per place. [2024-06-27 18:26:27,060 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 87 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2024-06-27 18:26:27,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 618 flow [2024-06-27 18:26:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:26:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:26:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-06-27 18:26:27,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-27 18:26:27,062 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 180 transitions. [2024-06-27 18:26:27,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 618 flow [2024-06-27 18:26:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 572 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:27,069 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 367 flow [2024-06-27 18:26:27,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2024-06-27 18:26:27,070 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-27 18:26:27,070 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 367 flow [2024-06-27 18:26:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:26:27,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:27,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:27,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:26:27,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:27,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash 647043100, now seen corresponding path program 1 times [2024-06-27 18:26:27,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:27,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867525129] [2024-06-27 18:26:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:27,138 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 18:26:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867525129] [2024-06-27 18:26:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867525129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:26:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443118478] [2024-06-27 18:26:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:26:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:26:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:26:27,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2024-06-27 18:26:27,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 367 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 18:26:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2024-06-27 18:26:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:28,691 INFO L124 PetriNetUnfolderBase]: 6710/11862 cut-off events. [2024-06-27 18:26:28,691 INFO L125 PetriNetUnfolderBase]: For 5041/6124 co-relation queries the response was YES. [2024-06-27 18:26:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25980 conditions, 11862 events. 6710/11862 cut-off events. For 5041/6124 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 100117 event pairs, 3130 based on Foata normal form. 32/10922 useless extension candidates. Maximal degree in co-relation 25963. Up to 7764 conditions per place. [2024-06-27 18:26:28,764 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 45 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-06-27 18:26:28,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 470 flow [2024-06-27 18:26:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:26:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:26:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-06-27 18:26:28,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7758620689655172 [2024-06-27 18:26:28,766 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 367 flow. Second operand 3 states and 135 transitions. [2024-06-27 18:26:28,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 470 flow [2024-06-27 18:26:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 458 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:26:28,774 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 326 flow [2024-06-27 18:26:28,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-06-27 18:26:28,776 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-27 18:26:28,776 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 326 flow [2024-06-27 18:26:28,776 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 18:26:28,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:28,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:28,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:26:28,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:28,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 299007141, now seen corresponding path program 1 times [2024-06-27 18:26:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139970239] [2024-06-27 18:26:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:29,970 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 18:26:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:29,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139970239] [2024-06-27 18:26:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139970239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:29,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326542987] [2024-06-27 18:26:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:30,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:26:30,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 18:26:30,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:30,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:26:30,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:33,816 INFO L124 PetriNetUnfolderBase]: 29369/42598 cut-off events. [2024-06-27 18:26:33,832 INFO L125 PetriNetUnfolderBase]: For 42360/42360 co-relation queries the response was YES. [2024-06-27 18:26:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108019 conditions, 42598 events. 29369/42598 cut-off events. For 42360/42360 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 293196 event pairs, 15860 based on Foata normal form. 8/41423 useless extension candidates. Maximal degree in co-relation 108000. Up to 38712 conditions per place. [2024-06-27 18:26:34,102 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 92 selfloop transitions, 20 changer transitions 1/125 dead transitions. [2024-06-27 18:26:34,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 690 flow [2024-06-27 18:26:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2024-06-27 18:26:34,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890804597701149 [2024-06-27 18:26:34,108 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 326 flow. Second operand 6 states and 205 transitions. [2024-06-27 18:26:34,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 690 flow [2024-06-27 18:26:34,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 125 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:34,119 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 389 flow [2024-06-27 18:26:34,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-27 18:26:34,121 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-06-27 18:26:34,121 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 389 flow [2024-06-27 18:26:34,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 18:26:34,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:34,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:34,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:26:34,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:34,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash -963584534, now seen corresponding path program 1 times [2024-06-27 18:26:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977978637] [2024-06-27 18:26:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:35,096 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 18:26:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977978637] [2024-06-27 18:26:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977978637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:26:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292742846] [2024-06-27 18:26:35,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:35,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:26:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:26:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:26:35,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-06-27 18:26:35,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:35,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:35,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-06-27 18:26:35,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:39,093 INFO L124 PetriNetUnfolderBase]: 24559/36489 cut-off events. [2024-06-27 18:26:39,094 INFO L125 PetriNetUnfolderBase]: For 46390/46390 co-relation queries the response was YES. [2024-06-27 18:26:39,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97169 conditions, 36489 events. 24559/36489 cut-off events. For 46390/46390 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 254429 event pairs, 15151 based on Foata normal form. 3/35128 useless extension candidates. Maximal degree in co-relation 97148. Up to 32565 conditions per place. [2024-06-27 18:26:39,363 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 88 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-06-27 18:26:39,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 716 flow [2024-06-27 18:26:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:26:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:26:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 18:26:39,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-06-27 18:26:39,365 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 389 flow. Second operand 5 states and 150 transitions. [2024-06-27 18:26:39,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 716 flow [2024-06-27 18:26:39,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 653 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:39,380 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 450 flow [2024-06-27 18:26:39,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-27 18:26:39,381 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-06-27 18:26:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 450 flow [2024-06-27 18:26:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:39,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:39,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:26:39,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:39,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1702471625, now seen corresponding path program 1 times [2024-06-27 18:26:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406107845] [2024-06-27 18:26:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:40,330 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 18:26:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406107845] [2024-06-27 18:26:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406107845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:40,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064391626] [2024-06-27 18:26:40,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:40,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:26:40,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:26:40,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:40,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:26:40,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:44,877 INFO L124 PetriNetUnfolderBase]: 29413/42747 cut-off events. [2024-06-27 18:26:44,878 INFO L125 PetriNetUnfolderBase]: For 76702/76702 co-relation queries the response was YES. [2024-06-27 18:26:45,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122267 conditions, 42747 events. 29413/42747 cut-off events. For 76702/76702 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 292010 event pairs, 18082 based on Foata normal form. 3/41567 useless extension candidates. Maximal degree in co-relation 122243. Up to 38847 conditions per place. [2024-06-27 18:26:45,197 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 105 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-27 18:26:45,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 851 flow [2024-06-27 18:26:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 18:26:45,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-06-27 18:26:45,203 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 450 flow. Second operand 6 states and 177 transitions. [2024-06-27 18:26:45,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 851 flow [2024-06-27 18:26:45,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 826 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:45,235 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 557 flow [2024-06-27 18:26:45,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-06-27 18:26:45,236 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-06-27 18:26:45,236 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 557 flow [2024-06-27 18:26:45,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:26:45,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:45,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:45,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:26:45,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:45,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -952119821, now seen corresponding path program 2 times [2024-06-27 18:26:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963495987] [2024-06-27 18:26:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:46,145 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 18:26:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963495987] [2024-06-27 18:26:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963495987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:46,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600751641] [2024-06-27 18:26:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:46,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:46,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:46,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:26:46,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:26:46,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:46,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:26:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:50,397 INFO L124 PetriNetUnfolderBase]: 29415/42700 cut-off events. [2024-06-27 18:26:50,398 INFO L125 PetriNetUnfolderBase]: For 104911/104939 co-relation queries the response was YES. [2024-06-27 18:26:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130967 conditions, 42700 events. 29415/42700 cut-off events. For 104911/104939 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 291208 event pairs, 17406 based on Foata normal form. 27/41576 useless extension candidates. Maximal degree in co-relation 130940. Up to 38802 conditions per place. [2024-06-27 18:26:50,715 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 102 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-06-27 18:26:50,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 135 transitions, 949 flow [2024-06-27 18:26:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 18:26:50,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-06-27 18:26:50,717 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 557 flow. Second operand 6 states and 178 transitions. [2024-06-27 18:26:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 135 transitions, 949 flow [2024-06-27 18:26:50,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 906 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:50,738 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 619 flow [2024-06-27 18:26:50,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-27 18:26:50,739 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2024-06-27 18:26:50,739 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 619 flow [2024-06-27 18:26:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:26:50,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:50,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:26:50,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -952110893, now seen corresponding path program 1 times [2024-06-27 18:26:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515700244] [2024-06-27 18:26:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:52,313 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 18:26:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515700244] [2024-06-27 18:26:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515700244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:52,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540816507] [2024-06-27 18:26:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:52,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:26:52,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 619 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 18:26:52,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:52,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:26:52,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand