./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:57:39,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:57:39,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:57:39,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:57:39,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:57:39,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:57:39,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:57:39,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:57:39,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:57:39,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:57:39,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:57:39,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:57:39,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:57:39,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:57:39,240 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:57:39,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:57:39,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:57:39,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:57:39,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:57:39,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:57:39,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:57:39,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:57:39,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:57:39,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:57:39,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:57:39,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:57:39,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:57:39,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:57:39,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:57:39,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:57:39,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:57:39,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:57:39,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:39,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:57:39,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:57:39,246 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:57:39,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:57:39,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:57:39,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:57:39,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:57:39,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:57:39,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:57:39,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:57:39,460 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:57:39,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-28 01:57:40,531 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:57:40,692 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:57:40,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-28 01:57:40,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b891e5795/9075306d85dd4be180bb23e27c04bc0c/FLAG255062326 [2024-06-28 01:57:40,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b891e5795/9075306d85dd4be180bb23e27c04bc0c [2024-06-28 01:57:40,728 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:57:40,728 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:57:40,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml [2024-06-28 01:57:40,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:57:40,881 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:57:40,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:40,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:57:40,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:57:40,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:40" (1/2) ... [2024-06-28 01:57:40,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f5b21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:40, skipping insertion in model container [2024-06-28 01:57:40,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:40" (1/2) ... [2024-06-28 01:57:40,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62739ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:40, skipping insertion in model container [2024-06-28 01:57:40,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:40" (2/2) ... [2024-06-28 01:57:40,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f5b21f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:40, skipping insertion in model container [2024-06-28 01:57:40,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:40" (2/2) ... [2024-06-28 01:57:40,890 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:57:40,960 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:57:40,962 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:57:40,962 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:57:40,962 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:57:40,962 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:57:40,963 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-28 01:57:41,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:57:41,144 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/safe011_power.opt_pso.opt.i[959,972] [2024-06-28 01:57:41,385 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:41,393 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:57:41,421 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/safe011_power.opt_pso.opt.i[959,972] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:57:41,512 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:41,554 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:57:41,554 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41 WrapperNode [2024-06-28 01:57:41,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:41,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:41,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:57:41,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:57:41,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,623 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-28 01:57:41,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:41,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:57:41,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:57:41,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:57:41,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,652 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:57:41,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:57:41,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:57:41,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:57:41,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:57:41,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (1/1) ... [2024-06-28 01:57:41,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:41,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:57:41,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:57:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:57:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:57:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:57:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:57:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:57:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:57:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:57:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:57:41,722 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:57:41,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:57:41,866 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:57:41,868 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:57:42,225 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:57:42,226 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:57:42,404 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:57:42,405 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:57:42,405 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:42 BoogieIcfgContainer [2024-06-28 01:57:42,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:57:42,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:57:42,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:57:42,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:57:42,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:57:40" (1/4) ... [2024-06-28 01:57:42,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:57:42, skipping insertion in model container [2024-06-28 01:57:42,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:40" (2/4) ... [2024-06-28 01:57:42,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c152e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:57:42, skipping insertion in model container [2024-06-28 01:57:42,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:41" (3/4) ... [2024-06-28 01:57:42,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c152e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:57:42, skipping insertion in model container [2024-06-28 01:57:42,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:42" (4/4) ... [2024-06-28 01:57:42,413 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2024-06-28 01:57:42,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:57:42,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:57:42,427 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:57:42,463 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:57:42,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:42,524 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:57:42,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:42,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:57:42,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:42,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:57:42,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:57:42,552 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;@4cc7ff22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:57:42,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:57:42,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:57:42,558 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:57:42,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:42,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:42,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:57:42,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:42,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-28 01:57:42,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:42,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557871324] [2024-06-28 01:57:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:42,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557871324] [2024-06-28 01:57:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557871324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:43,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:57:43,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664593112] [2024-06-28 01:57:43,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:57:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:57:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:57:43,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:57:43,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:43,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:57:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:44,060 INFO L124 PetriNetUnfolderBase]: 4271/6151 cut-off events. [2024-06-28 01:57:44,060 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-28 01:57:44,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6151 events. 4271/6151 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33320 event pairs, 2519 based on Foata normal form. 211/6047 useless extension candidates. Maximal degree in co-relation 12383. Up to 6128 conditions per place. [2024-06-28 01:57:44,098 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:57:44,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 227 flow [2024-06-28 01:57:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-28 01:57:44,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:57:44,110 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 92 transitions. [2024-06-28 01:57:44,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 227 flow [2024-06-28 01:57:44,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:44,117 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:57:44,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:57:44,122 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:57:44,122 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:57:44,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:44,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:44,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:57:44,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:44,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1706182541, now seen corresponding path program 1 times [2024-06-28 01:57:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:44,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702251778] [2024-06-28 01:57:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702251778] [2024-06-28 01:57:44,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702251778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:44,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:44,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:57:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117599765] [2024-06-28 01:57:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:57:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:57:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:57:44,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:57:44,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:44,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:44,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:57:44,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:45,290 INFO L124 PetriNetUnfolderBase]: 4323/6337 cut-off events. [2024-06-28 01:57:45,291 INFO L125 PetriNetUnfolderBase]: For 897/912 co-relation queries the response was YES. [2024-06-28 01:57:45,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 6337 events. 4323/6337 cut-off events. For 897/912 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 35325 event pairs, 2312 based on Foata normal form. 8/6023 useless extension candidates. Maximal degree in co-relation 14121. Up to 6074 conditions per place. [2024-06-28 01:57:45,319 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 59 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-28 01:57:45,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 369 flow [2024-06-28 01:57:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:57:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:57:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 01:57:45,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-06-28 01:57:45,323 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 125 transitions. [2024-06-28 01:57:45,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 369 flow [2024-06-28 01:57:45,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:45,327 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 217 flow [2024-06-28 01:57:45,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-28 01:57:45,328 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-28 01:57:45,328 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 217 flow [2024-06-28 01:57:45,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:45,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:45,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:45,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:57:45,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:45,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1352050515, now seen corresponding path program 1 times [2024-06-28 01:57:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34469177] [2024-06-28 01:57:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:45,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:45,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34469177] [2024-06-28 01:57:45,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34469177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:45,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:45,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:57:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350105423] [2024-06-28 01:57:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:57:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:57:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:57:45,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:57:45,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:45,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:45,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:57:45,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:46,555 INFO L124 PetriNetUnfolderBase]: 4383/6931 cut-off events. [2024-06-28 01:57:46,555 INFO L125 PetriNetUnfolderBase]: For 3323/3359 co-relation queries the response was YES. [2024-06-28 01:57:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17172 conditions, 6931 events. 4383/6931 cut-off events. For 3323/3359 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42771 event pairs, 2000 based on Foata normal form. 16/6435 useless extension candidates. Maximal degree in co-relation 17157. Up to 6062 conditions per place. [2024-06-28 01:57:46,597 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 80 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2024-06-28 01:57:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 115 transitions, 647 flow [2024-06-28 01:57:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-28 01:57:46,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-06-28 01:57:46,601 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 217 flow. Second operand 5 states and 153 transitions. [2024-06-28 01:57:46,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 115 transitions, 647 flow [2024-06-28 01:57:46,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 115 transitions, 635 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:57:46,606 INFO L231 Difference]: Finished difference. Result has 63 places, 80 transitions, 456 flow [2024-06-28 01:57:46,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2024-06-28 01:57:46,607 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-28 01:57:46,607 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 456 flow [2024-06-28 01:57:46,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:46,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:46,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:46,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:57:46,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:46,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1359446230, now seen corresponding path program 1 times [2024-06-28 01:57:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338977012] [2024-06-28 01:57:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:46,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338977012] [2024-06-28 01:57:46,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338977012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:46,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:46,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:57:46,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67261551] [2024-06-28 01:57:46,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:46,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:57:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:57:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:57:46,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-28 01:57:46,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:46,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:46,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-28 01:57:46,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:46,935 INFO L124 PetriNetUnfolderBase]: 1424/2833 cut-off events. [2024-06-28 01:57:46,935 INFO L125 PetriNetUnfolderBase]: For 2302/2509 co-relation queries the response was YES. [2024-06-28 01:57:46,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 2833 events. 1424/2833 cut-off events. For 2302/2509 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20845 event pairs, 457 based on Foata normal form. 48/2657 useless extension candidates. Maximal degree in co-relation 6796. Up to 1734 conditions per place. [2024-06-28 01:57:46,951 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-28 01:57:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 497 flow [2024-06-28 01:57:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:57:46,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-28 01:57:46,952 INFO L175 Difference]: Start difference. First operand has 63 places, 80 transitions, 456 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:57:46,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 497 flow [2024-06-28 01:57:46,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 487 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 01:57:46,956 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 387 flow [2024-06-28 01:57:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-06-28 01:57:46,957 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-28 01:57:46,957 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 387 flow [2024-06-28 01:57:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:46,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:57:46,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1981792872, now seen corresponding path program 1 times [2024-06-28 01:57:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698725046] [2024-06-28 01:57:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698725046] [2024-06-28 01:57:47,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698725046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:47,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909478518] [2024-06-28 01:57:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:47,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:47,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:57:47,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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) [2024-06-28 01:57:47,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:47,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:57:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:48,428 INFO L124 PetriNetUnfolderBase]: 3828/6076 cut-off events. [2024-06-28 01:57:48,429 INFO L125 PetriNetUnfolderBase]: For 7112/7133 co-relation queries the response was YES. [2024-06-28 01:57:48,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16791 conditions, 6076 events. 3828/6076 cut-off events. For 7112/7133 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36369 event pairs, 1753 based on Foata normal form. 27/5915 useless extension candidates. Maximal degree in co-relation 16769. Up to 5123 conditions per place. [2024-06-28 01:57:48,457 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 86 selfloop transitions, 23 changer transitions 1/120 dead transitions. [2024-06-28 01:57:48,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 746 flow [2024-06-28 01:57:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-28 01:57:48,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-28 01:57:48,459 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 387 flow. Second operand 6 states and 176 transitions. [2024-06-28 01:57:48,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 746 flow [2024-06-28 01:57:48,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:48,466 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 438 flow [2024-06-28 01:57:48,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-06-28 01:57:48,466 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-28 01:57:48,467 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 438 flow [2024-06-28 01:57:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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) [2024-06-28 01:57:48,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:48,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:48,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:57:48,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:48,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-28 01:57:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957536638] [2024-06-28 01:57:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:48,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:48,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957536638] [2024-06-28 01:57:48,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957536638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:48,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:57:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34319958] [2024-06-28 01:57:48,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:48,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:57:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:57:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:57:48,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:48,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:48,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:48,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:49,659 INFO L124 PetriNetUnfolderBase]: 3871/6130 cut-off events. [2024-06-28 01:57:49,659 INFO L125 PetriNetUnfolderBase]: For 8463/8489 co-relation queries the response was YES. [2024-06-28 01:57:49,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 6130 events. 3871/6130 cut-off events. For 8463/8489 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36234 event pairs, 1983 based on Foata normal form. 11/5955 useless extension candidates. Maximal degree in co-relation 17878. Up to 5549 conditions per place. [2024-06-28 01:57:49,702 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 80 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2024-06-28 01:57:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 712 flow [2024-06-28 01:57:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 01:57:49,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-28 01:57:49,707 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 438 flow. Second operand 5 states and 113 transitions. [2024-06-28 01:57:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 712 flow [2024-06-28 01:57:49,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 659 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:49,715 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 480 flow [2024-06-28 01:57:49,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2024-06-28 01:57:49,717 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-28 01:57:49,718 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 480 flow [2024-06-28 01:57:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:49,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:49,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:49,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:57:49,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:49,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:49,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-28 01:57:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:49,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389125544] [2024-06-28 01:57:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:49,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389125544] [2024-06-28 01:57:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389125544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:50,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:50,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27934016] [2024-06-28 01:57:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:50,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:50,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:50,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:50,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:51,105 INFO L124 PetriNetUnfolderBase]: 4594/7322 cut-off events. [2024-06-28 01:57:51,106 INFO L125 PetriNetUnfolderBase]: For 11646/11646 co-relation queries the response was YES. [2024-06-28 01:57:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21621 conditions, 7322 events. 4594/7322 cut-off events. For 11646/11646 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 44644 event pairs, 3015 based on Foata normal form. 2/7102 useless extension candidates. Maximal degree in co-relation 21594. Up to 6538 conditions per place. [2024-06-28 01:57:51,142 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 96 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-06-28 01:57:51,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 853 flow [2024-06-28 01:57:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 01:57:51,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409937888198758 [2024-06-28 01:57:51,144 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 480 flow. Second operand 7 states and 142 transitions. [2024-06-28 01:57:51,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 853 flow [2024-06-28 01:57:51,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 825 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:51,152 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 599 flow [2024-06-28 01:57:51,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=599, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2024-06-28 01:57:51,153 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-06-28 01:57:51,153 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 599 flow [2024-06-28 01:57:51,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:51,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:51,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:51,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:57:51,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:51,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1093038573, now seen corresponding path program 1 times [2024-06-28 01:57:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449468686] [2024-06-28 01:57:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:51,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449468686] [2024-06-28 01:57:51,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449468686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:51,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:51,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:51,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186778854] [2024-06-28 01:57:51,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:51,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:51,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:51,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:51,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 599 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:51,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:51,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:51,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:52,376 INFO L124 PetriNetUnfolderBase]: 4545/7282 cut-off events. [2024-06-28 01:57:52,376 INFO L125 PetriNetUnfolderBase]: For 17500/17537 co-relation queries the response was YES. [2024-06-28 01:57:52,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23494 conditions, 7282 events. 4545/7282 cut-off events. For 17500/17537 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 45111 event pairs, 2543 based on Foata normal form. 22/7045 useless extension candidates. Maximal degree in co-relation 23462. Up to 6408 conditions per place. [2024-06-28 01:57:52,427 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 103 selfloop transitions, 31 changer transitions 0/145 dead transitions. [2024-06-28 01:57:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 145 transitions, 1096 flow [2024-06-28 01:57:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:57:52,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-28 01:57:52,429 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 599 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:57:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 145 transitions, 1096 flow [2024-06-28 01:57:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 145 transitions, 1088 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:52,443 INFO L231 Difference]: Finished difference. Result has 84 places, 115 transitions, 862 flow [2024-06-28 01:57:52,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=84, PETRI_TRANSITIONS=115} [2024-06-28 01:57:52,445 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-28 01:57:52,445 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 115 transitions, 862 flow [2024-06-28 01:57:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:52,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:52,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:57:52,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:52,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1931200541, now seen corresponding path program 2 times [2024-06-28 01:57:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:52,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453936649] [2024-06-28 01:57:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453936649] [2024-06-28 01:57:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453936649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:52,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:52,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902492790] [2024-06-28 01:57:52,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:52,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:52,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:52,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 862 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:52,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:52,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:52,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:53,745 INFO L124 PetriNetUnfolderBase]: 4556/7311 cut-off events. [2024-06-28 01:57:53,746 INFO L125 PetriNetUnfolderBase]: For 23708/23774 co-relation queries the response was YES. [2024-06-28 01:57:53,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26188 conditions, 7311 events. 4556/7311 cut-off events. For 23708/23774 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45386 event pairs, 2516 based on Foata normal form. 34/7082 useless extension candidates. Maximal degree in co-relation 26151. Up to 6383 conditions per place. [2024-06-28 01:57:53,785 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 103 selfloop transitions, 32 changer transitions 0/146 dead transitions. [2024-06-28 01:57:53,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1266 flow [2024-06-28 01:57:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:57:53,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-28 01:57:53,786 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 862 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:57:53,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1266 flow [2024-06-28 01:57:53,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 1242 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:53,802 INFO L231 Difference]: Finished difference. Result has 89 places, 119 transitions, 958 flow [2024-06-28 01:57:53,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=89, PETRI_TRANSITIONS=119} [2024-06-28 01:57:53,802 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-06-28 01:57:53,802 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 119 transitions, 958 flow [2024-06-28 01:57:53,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:53,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:53,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:53,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:57:53,803 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:53,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash 564030791, now seen corresponding path program 3 times [2024-06-28 01:57:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115889229] [2024-06-28 01:57:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:54,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115889229] [2024-06-28 01:57:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115889229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:54,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:54,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986805575] [2024-06-28 01:57:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:54,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:54,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:54,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 119 transitions, 958 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:54,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:54,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:54,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:55,122 INFO L124 PetriNetUnfolderBase]: 4760/7624 cut-off events. [2024-06-28 01:57:55,122 INFO L125 PetriNetUnfolderBase]: For 31546/31614 co-relation queries the response was YES. [2024-06-28 01:57:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29348 conditions, 7624 events. 4760/7624 cut-off events. For 31546/31614 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47375 event pairs, 2501 based on Foata normal form. 36/7392 useless extension candidates. Maximal degree in co-relation 29308. Up to 6468 conditions per place. [2024-06-28 01:57:55,175 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 110 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-06-28 01:57:55,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 1460 flow [2024-06-28 01:57:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:57:55,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 01:57:55,177 INFO L175 Difference]: Start difference. First operand has 89 places, 119 transitions, 958 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:57:55,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 1460 flow [2024-06-28 01:57:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1362 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:55,203 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 1055 flow [2024-06-28 01:57:55,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1055, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2024-06-28 01:57:55,204 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-06-28 01:57:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 1055 flow [2024-06-28 01:57:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:55,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:55,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:57:55,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:55,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-28 01:57:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313266657] [2024-06-28 01:57:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:55,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313266657] [2024-06-28 01:57:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313266657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:55,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:55,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:55,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625873577] [2024-06-28 01:57:55,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:55,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:55,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:55,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 1055 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:55,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:55,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:56,913 INFO L124 PetriNetUnfolderBase]: 4904/7792 cut-off events. [2024-06-28 01:57:56,913 INFO L125 PetriNetUnfolderBase]: For 28000/28000 co-relation queries the response was YES. [2024-06-28 01:57:56,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29229 conditions, 7792 events. 4904/7792 cut-off events. For 28000/28000 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 47547 event pairs, 2893 based on Foata normal form. 2/7556 useless extension candidates. Maximal degree in co-relation 29187. Up to 6948 conditions per place. [2024-06-28 01:57:56,968 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 143 selfloop transitions, 28 changer transitions 0/178 dead transitions. [2024-06-28 01:57:56,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1650 flow [2024-06-28 01:57:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 01:57:56,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2024-06-28 01:57:56,969 INFO L175 Difference]: Start difference. First operand has 92 places, 127 transitions, 1055 flow. Second operand 7 states and 151 transitions. [2024-06-28 01:57:56,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1650 flow [2024-06-28 01:57:56,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 178 transitions, 1603 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:56,999 INFO L231 Difference]: Finished difference. Result has 100 places, 149 transitions, 1288 flow [2024-06-28 01:57:56,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1288, PETRI_PLACES=100, PETRI_TRANSITIONS=149} [2024-06-28 01:57:57,000 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-28 01:57:57,000 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 149 transitions, 1288 flow [2024-06-28 01:57:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:57,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:57,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:57:57,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -228460797, now seen corresponding path program 1 times [2024-06-28 01:57:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:57,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027690878] [2024-06-28 01:57:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:57,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027690878] [2024-06-28 01:57:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027690878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909174452] [2024-06-28 01:57:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:57,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:57,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:57,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 149 transitions, 1288 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:57:57,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:57,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:57,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:58,450 INFO L124 PetriNetUnfolderBase]: 4786/7521 cut-off events. [2024-06-28 01:57:58,451 INFO L125 PetriNetUnfolderBase]: For 36157/36312 co-relation queries the response was YES. [2024-06-28 01:57:58,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31201 conditions, 7521 events. 4786/7521 cut-off events. For 36157/36312 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 45619 event pairs, 1650 based on Foata normal form. 59/7272 useless extension candidates. Maximal degree in co-relation 31154. Up to 6416 conditions per place. [2024-06-28 01:57:58,518 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 143 selfloop transitions, 58 changer transitions 0/218 dead transitions. [2024-06-28 01:57:58,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 218 transitions, 1996 flow [2024-06-28 01:57:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:57:58,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-28 01:57:58,520 INFO L175 Difference]: Start difference. First operand has 100 places, 149 transitions, 1288 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:57:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 218 transitions, 1996 flow [2024-06-28 01:57:58,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 218 transitions, 1954 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:58,575 INFO L231 Difference]: Finished difference. Result has 109 places, 170 transitions, 1549 flow [2024-06-28 01:57:58,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1549, PETRI_PLACES=109, PETRI_TRANSITIONS=170} [2024-06-28 01:57:58,576 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-28 01:57:58,576 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 170 transitions, 1549 flow [2024-06-28 01:57:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:57:58,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:58,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:58,576 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:58,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash -517376635, now seen corresponding path program 2 times [2024-06-28 01:57:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73557357] [2024-06-28 01:57:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:59,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73557357] [2024-06-28 01:57:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73557357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:59,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981826974] [2024-06-28 01:57:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:59,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 170 transitions, 1549 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:57:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:59,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:00,175 INFO L124 PetriNetUnfolderBase]: 5037/7856 cut-off events. [2024-06-28 01:58:00,175 INFO L125 PetriNetUnfolderBase]: For 50115/50478 co-relation queries the response was YES. [2024-06-28 01:58:00,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37346 conditions, 7856 events. 5037/7856 cut-off events. For 50115/50478 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 47226 event pairs, 1661 based on Foata normal form. 77/7621 useless extension candidates. Maximal degree in co-relation 37294. Up to 6645 conditions per place. [2024-06-28 01:58:00,236 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 155 selfloop transitions, 81 changer transitions 0/253 dead transitions. [2024-06-28 01:58:00,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 253 transitions, 2593 flow [2024-06-28 01:58:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:58:00,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-28 01:58:00,238 INFO L175 Difference]: Start difference. First operand has 109 places, 170 transitions, 1549 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:58:00,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 253 transitions, 2593 flow [2024-06-28 01:58:00,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 253 transitions, 2418 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:00,292 INFO L231 Difference]: Finished difference. Result has 117 places, 205 transitions, 1994 flow [2024-06-28 01:58:00,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1994, PETRI_PLACES=117, PETRI_TRANSITIONS=205} [2024-06-28 01:58:00,293 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-28 01:58:00,293 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 205 transitions, 1994 flow [2024-06-28 01:58:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:00,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:00,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:00,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:58:00,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:00,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -517255735, now seen corresponding path program 3 times [2024-06-28 01:58:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:00,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800747495] [2024-06-28 01:58:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800747495] [2024-06-28 01:58:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800747495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774475387] [2024-06-28 01:58:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:00,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:00,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:00,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 205 transitions, 1994 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:00,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:00,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:00,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:01,910 INFO L124 PetriNetUnfolderBase]: 5209/8099 cut-off events. [2024-06-28 01:58:01,911 INFO L125 PetriNetUnfolderBase]: For 62425/62768 co-relation queries the response was YES. [2024-06-28 01:58:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41021 conditions, 8099 events. 5209/8099 cut-off events. For 62425/62768 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 48701 event pairs, 1648 based on Foata normal form. 75/7854 useless extension candidates. Maximal degree in co-relation 40965. Up to 6687 conditions per place. [2024-06-28 01:58:01,977 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 163 selfloop transitions, 94 changer transitions 0/274 dead transitions. [2024-06-28 01:58:01,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 274 transitions, 3032 flow [2024-06-28 01:58:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:58:01,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-28 01:58:01,979 INFO L175 Difference]: Start difference. First operand has 117 places, 205 transitions, 1994 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:58:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 274 transitions, 3032 flow [2024-06-28 01:58:02,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 274 transitions, 2895 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:02,059 INFO L231 Difference]: Finished difference. Result has 123 places, 220 transitions, 2307 flow [2024-06-28 01:58:02,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2307, PETRI_PLACES=123, PETRI_TRANSITIONS=220} [2024-06-28 01:58:02,060 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-28 01:58:02,060 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 220 transitions, 2307 flow [2024-06-28 01:58:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:02,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:02,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:58:02,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -517255518, now seen corresponding path program 1 times [2024-06-28 01:58:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563477377] [2024-06-28 01:58:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:02,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563477377] [2024-06-28 01:58:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563477377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:02,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:02,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:02,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072155267] [2024-06-28 01:58:02,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:02,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:02,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:02,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:02,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 220 transitions, 2307 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:02,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:02,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:02,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:03,809 INFO L124 PetriNetUnfolderBase]: 5657/8802 cut-off events. [2024-06-28 01:58:03,809 INFO L125 PetriNetUnfolderBase]: For 69137/69137 co-relation queries the response was YES. [2024-06-28 01:58:03,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44769 conditions, 8802 events. 5657/8802 cut-off events. For 69137/69137 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53019 event pairs, 2466 based on Foata normal form. 2/8569 useless extension candidates. Maximal degree in co-relation 44711. Up to 7954 conditions per place. [2024-06-28 01:58:03,871 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 243 selfloop transitions, 26 changer transitions 0/276 dead transitions. [2024-06-28 01:58:03,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 276 transitions, 3195 flow [2024-06-28 01:58:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 01:58:03,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-28 01:58:03,875 INFO L175 Difference]: Start difference. First operand has 123 places, 220 transitions, 2307 flow. Second operand 8 states and 175 transitions. [2024-06-28 01:58:03,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 276 transitions, 3195 flow [2024-06-28 01:58:03,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 276 transitions, 3027 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:03,961 INFO L231 Difference]: Finished difference. Result has 130 places, 237 transitions, 2441 flow [2024-06-28 01:58:03,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2441, PETRI_PLACES=130, PETRI_TRANSITIONS=237} [2024-06-28 01:58:03,962 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-28 01:58:03,963 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 237 transitions, 2441 flow [2024-06-28 01:58:03,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:03,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:03,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:03,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:58:03,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:03,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1507586629, now seen corresponding path program 4 times [2024-06-28 01:58:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123760362] [2024-06-28 01:58:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:04,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:04,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123760362] [2024-06-28 01:58:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123760362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:04,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232352590] [2024-06-28 01:58:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:04,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:04,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 237 transitions, 2441 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:04,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:04,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:05,759 INFO L124 PetriNetUnfolderBase]: 5363/8329 cut-off events. [2024-06-28 01:58:05,759 INFO L125 PetriNetUnfolderBase]: For 79147/79451 co-relation queries the response was YES. [2024-06-28 01:58:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45167 conditions, 8329 events. 5363/8329 cut-off events. For 79147/79451 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 50158 event pairs, 1642 based on Foata normal form. 88/8074 useless extension candidates. Maximal degree in co-relation 45104. Up to 6916 conditions per place. [2024-06-28 01:58:05,823 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 169 selfloop transitions, 94 changer transitions 0/284 dead transitions. [2024-06-28 01:58:05,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 284 transitions, 3264 flow [2024-06-28 01:58:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:58:05,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-28 01:58:05,825 INFO L175 Difference]: Start difference. First operand has 130 places, 237 transitions, 2441 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:58:05,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 284 transitions, 3264 flow [2024-06-28 01:58:05,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 284 transitions, 3230 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:05,922 INFO L231 Difference]: Finished difference. Result has 135 places, 242 transitions, 2710 flow [2024-06-28 01:58:05,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2710, PETRI_PLACES=135, PETRI_TRANSITIONS=242} [2024-06-28 01:58:05,922 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-28 01:58:05,924 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 242 transitions, 2710 flow [2024-06-28 01:58:05,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:05,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:05,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:05,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:58:05,924 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:05,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 127033108, now seen corresponding path program 2 times [2024-06-28 01:58:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:05,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12770862] [2024-06-28 01:58:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:06,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:06,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12770862] [2024-06-28 01:58:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12770862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:06,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:06,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:06,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717083757] [2024-06-28 01:58:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:06,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:06,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:06,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 242 transitions, 2710 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:06,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:06,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:06,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:07,682 INFO L124 PetriNetUnfolderBase]: 5823/9038 cut-off events. [2024-06-28 01:58:07,682 INFO L125 PetriNetUnfolderBase]: For 85985/85987 co-relation queries the response was YES. [2024-06-28 01:58:07,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49653 conditions, 9038 events. 5823/9038 cut-off events. For 85985/85987 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 54393 event pairs, 2408 based on Foata normal form. 4/8804 useless extension candidates. Maximal degree in co-relation 49588. Up to 8145 conditions per place. [2024-06-28 01:58:07,769 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 248 selfloop transitions, 29 changer transitions 0/284 dead transitions. [2024-06-28 01:58:07,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 284 transitions, 3491 flow [2024-06-28 01:58:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:58:07,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:58:07,770 INFO L175 Difference]: Start difference. First operand has 135 places, 242 transitions, 2710 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:58:07,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 284 transitions, 3491 flow [2024-06-28 01:58:07,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 284 transitions, 3290 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:07,889 INFO L231 Difference]: Finished difference. Result has 138 places, 248 transitions, 2654 flow [2024-06-28 01:58:07,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2654, PETRI_PLACES=138, PETRI_TRANSITIONS=248} [2024-06-28 01:58:07,890 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-28 01:58:07,890 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 248 transitions, 2654 flow [2024-06-28 01:58:07,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:07,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:07,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:07,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:58:07,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:07,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:07,891 INFO L85 PathProgramCache]: Analyzing trace with hash 902515233, now seen corresponding path program 5 times [2024-06-28 01:58:07,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:07,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543384624] [2024-06-28 01:58:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543384624] [2024-06-28 01:58:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543384624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:08,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340412505] [2024-06-28 01:58:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:08,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:08,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:08,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 248 transitions, 2654 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:08,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:08,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:09,848 INFO L124 PetriNetUnfolderBase]: 6120/9366 cut-off events. [2024-06-28 01:58:09,849 INFO L125 PetriNetUnfolderBase]: For 106830/107149 co-relation queries the response was YES. [2024-06-28 01:58:09,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54919 conditions, 9366 events. 6120/9366 cut-off events. For 106830/107149 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 55712 event pairs, 1655 based on Foata normal form. 82/9066 useless extension candidates. Maximal degree in co-relation 54852. Up to 7466 conditions per place. [2024-06-28 01:58:10,180 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 219 selfloop transitions, 126 changer transitions 0/368 dead transitions. [2024-06-28 01:58:10,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 368 transitions, 4626 flow [2024-06-28 01:58:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:58:10,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:58:10,182 INFO L175 Difference]: Start difference. First operand has 138 places, 248 transitions, 2654 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:58:10,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 368 transitions, 4626 flow [2024-06-28 01:58:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 368 transitions, 4570 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:10,309 INFO L231 Difference]: Finished difference. Result has 145 places, 309 transitions, 3876 flow [2024-06-28 01:58:10,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3876, PETRI_PLACES=145, PETRI_TRANSITIONS=309} [2024-06-28 01:58:10,310 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2024-06-28 01:58:10,310 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 309 transitions, 3876 flow [2024-06-28 01:58:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:10,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:10,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:10,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:58:10,311 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:10,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 305354098, now seen corresponding path program 3 times [2024-06-28 01:58:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015017310] [2024-06-28 01:58:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015017310] [2024-06-28 01:58:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015017310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:10,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228897698] [2024-06-28 01:58:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:10,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:10,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 309 transitions, 3876 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:10,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:10,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:10,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:12,483 INFO L124 PetriNetUnfolderBase]: 6581/10075 cut-off events. [2024-06-28 01:58:12,484 INFO L125 PetriNetUnfolderBase]: For 114811/114820 co-relation queries the response was YES. [2024-06-28 01:58:12,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59984 conditions, 10075 events. 6581/10075 cut-off events. For 114811/114820 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 60298 event pairs, 2455 based on Foata normal form. 8/9840 useless extension candidates. Maximal degree in co-relation 59913. Up to 9051 conditions per place. [2024-06-28 01:58:12,587 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 303 selfloop transitions, 51 changer transitions 0/361 dead transitions. [2024-06-28 01:58:12,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 361 transitions, 4974 flow [2024-06-28 01:58:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:58:12,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-28 01:58:12,588 INFO L175 Difference]: Start difference. First operand has 145 places, 309 transitions, 3876 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:58:12,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 361 transitions, 4974 flow [2024-06-28 01:58:12,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 361 transitions, 4890 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:12,801 INFO L231 Difference]: Finished difference. Result has 152 places, 318 transitions, 4016 flow [2024-06-28 01:58:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4016, PETRI_PLACES=152, PETRI_TRANSITIONS=318} [2024-06-28 01:58:12,802 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-28 01:58:12,802 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 318 transitions, 4016 flow [2024-06-28 01:58:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:12,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:12,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:12,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:58:12,803 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:12,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 305086971, now seen corresponding path program 6 times [2024-06-28 01:58:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:12,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988945206] [2024-06-28 01:58:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:13,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988945206] [2024-06-28 01:58:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988945206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:13,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:13,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905560922] [2024-06-28 01:58:13,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:13,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:13,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:13,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 318 transitions, 4016 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:13,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:13,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:13,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:14,910 INFO L124 PetriNetUnfolderBase]: 6296/9490 cut-off events. [2024-06-28 01:58:14,910 INFO L125 PetriNetUnfolderBase]: For 128988/129437 co-relation queries the response was YES. [2024-06-28 01:58:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60515 conditions, 9490 events. 6296/9490 cut-off events. For 128988/129437 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 55695 event pairs, 1594 based on Foata normal form. 117/9202 useless extension candidates. Maximal degree in co-relation 60440. Up to 6884 conditions per place. [2024-06-28 01:58:15,012 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 228 selfloop transitions, 138 changer transitions 0/392 dead transitions. [2024-06-28 01:58:15,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 392 transitions, 5518 flow [2024-06-28 01:58:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:58:15,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 01:58:15,014 INFO L175 Difference]: Start difference. First operand has 152 places, 318 transitions, 4016 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:58:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 392 transitions, 5518 flow [2024-06-28 01:58:15,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 392 transitions, 5469 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:15,221 INFO L231 Difference]: Finished difference. Result has 159 places, 344 transitions, 4785 flow [2024-06-28 01:58:15,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4785, PETRI_PLACES=159, PETRI_TRANSITIONS=344} [2024-06-28 01:58:15,222 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-28 01:58:15,222 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 344 transitions, 4785 flow [2024-06-28 01:58:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:58:15,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:15,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:15,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:58:15,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:15,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 305087188, now seen corresponding path program 4 times [2024-06-28 01:58:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:15,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722374725] [2024-06-28 01:58:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:15,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722374725] [2024-06-28 01:58:15,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722374725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:15,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:15,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:15,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539893651] [2024-06-28 01:58:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:15,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:15,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:15,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 344 transitions, 4785 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:15,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:15,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:15,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:17,336 INFO L124 PetriNetUnfolderBase]: 6649/10096 cut-off events. [2024-06-28 01:58:17,336 INFO L125 PetriNetUnfolderBase]: For 143988/143997 co-relation queries the response was YES. [2024-06-28 01:58:17,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65923 conditions, 10096 events. 6649/10096 cut-off events. For 143988/143997 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 59865 event pairs, 2448 based on Foata normal form. 8/9879 useless extension candidates. Maximal degree in co-relation 65844. Up to 9144 conditions per place. [2024-06-28 01:58:17,436 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 331 selfloop transitions, 48 changer transitions 0/386 dead transitions. [2024-06-28 01:58:17,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 386 transitions, 5828 flow [2024-06-28 01:58:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:58:17,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-28 01:58:17,437 INFO L175 Difference]: Start difference. First operand has 159 places, 344 transitions, 4785 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:58:17,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 386 transitions, 5828 flow [2024-06-28 01:58:17,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 386 transitions, 5638 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:17,678 INFO L231 Difference]: Finished difference. Result has 164 places, 344 transitions, 4706 flow [2024-06-28 01:58:17,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4601, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4706, PETRI_PLACES=164, PETRI_TRANSITIONS=344} [2024-06-28 01:58:17,678 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-28 01:58:17,678 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 344 transitions, 4706 flow [2024-06-28 01:58:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:17,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:17,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:17,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:58:17,679 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:17,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 305364018, now seen corresponding path program 1 times [2024-06-28 01:58:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881328667] [2024-06-28 01:58:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:18,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:18,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881328667] [2024-06-28 01:58:18,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881328667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:18,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:18,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:18,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288406528] [2024-06-28 01:58:18,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:18,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:18,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:18,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:18,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 344 transitions, 4706 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:18,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:18,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:18,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:20,187 INFO L124 PetriNetUnfolderBase]: 6641/10114 cut-off events. [2024-06-28 01:58:20,187 INFO L125 PetriNetUnfolderBase]: For 140988/140988 co-relation queries the response was YES. [2024-06-28 01:58:20,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65302 conditions, 10114 events. 6641/10114 cut-off events. For 140988/140988 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60247 event pairs, 2639 based on Foata normal form. 4/9890 useless extension candidates. Maximal degree in co-relation 65221. Up to 9263 conditions per place. [2024-06-28 01:58:20,281 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 345 selfloop transitions, 32 changer transitions 0/384 dead transitions. [2024-06-28 01:58:20,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 384 transitions, 5662 flow [2024-06-28 01:58:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 01:58:20,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2024-06-28 01:58:20,282 INFO L175 Difference]: Start difference. First operand has 164 places, 344 transitions, 4706 flow. Second operand 9 states and 183 transitions. [2024-06-28 01:58:20,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 384 transitions, 5662 flow [2024-06-28 01:58:20,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 384 transitions, 5516 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:20,487 INFO L231 Difference]: Finished difference. Result has 167 places, 347 transitions, 4682 flow [2024-06-28 01:58:20,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4682, PETRI_PLACES=167, PETRI_TRANSITIONS=347} [2024-06-28 01:58:20,487 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-28 01:58:20,488 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 347 transitions, 4682 flow [2024-06-28 01:58:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:20,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:20,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:20,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:58:20,488 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:20,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1655357698, now seen corresponding path program 1 times [2024-06-28 01:58:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:20,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934454192] [2024-06-28 01:58:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934454192] [2024-06-28 01:58:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934454192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:21,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:21,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077721271] [2024-06-28 01:58:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:21,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:21,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:21,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:21,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 347 transitions, 4682 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:21,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:21,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:21,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:22,878 INFO L124 PetriNetUnfolderBase]: 6210/9470 cut-off events. [2024-06-28 01:58:22,878 INFO L125 PetriNetUnfolderBase]: For 161048/161521 co-relation queries the response was YES. [2024-06-28 01:58:22,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64294 conditions, 9470 events. 6210/9470 cut-off events. For 161048/161521 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 56063 event pairs, 2009 based on Foata normal form. 195/9257 useless extension candidates. Maximal degree in co-relation 64213. Up to 7958 conditions per place. [2024-06-28 01:58:22,960 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 254 selfloop transitions, 150 changer transitions 0/431 dead transitions. [2024-06-28 01:58:22,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 431 transitions, 6259 flow [2024-06-28 01:58:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:58:22,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:58:22,962 INFO L175 Difference]: Start difference. First operand has 167 places, 347 transitions, 4682 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:58:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 431 transitions, 6259 flow [2024-06-28 01:58:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 431 transitions, 6163 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:23,200 INFO L231 Difference]: Finished difference. Result has 171 places, 384 transitions, 5557 flow [2024-06-28 01:58:23,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5557, PETRI_PLACES=171, PETRI_TRANSITIONS=384} [2024-06-28 01:58:23,200 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-28 01:58:23,201 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 384 transitions, 5557 flow [2024-06-28 01:58:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:23,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:23,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:23,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:58:23,201 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:23,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1507699166, now seen corresponding path program 1 times [2024-06-28 01:58:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403955865] [2024-06-28 01:58:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403955865] [2024-06-28 01:58:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403955865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:23,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367691603] [2024-06-28 01:58:23,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:23,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:23,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:23,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 384 transitions, 5557 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:23,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:23,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:23,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:25,410 INFO L124 PetriNetUnfolderBase]: 6888/10405 cut-off events. [2024-06-28 01:58:25,411 INFO L125 PetriNetUnfolderBase]: For 167368/167372 co-relation queries the response was YES. [2024-06-28 01:58:25,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72214 conditions, 10405 events. 6888/10405 cut-off events. For 167368/167372 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 61168 event pairs, 1964 based on Foata normal form. 8/10186 useless extension candidates. Maximal degree in co-relation 72130. Up to 9339 conditions per place. [2024-06-28 01:58:25,536 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 406 selfloop transitions, 91 changer transitions 0/504 dead transitions. [2024-06-28 01:58:25,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 504 transitions, 7990 flow [2024-06-28 01:58:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 01:58:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-28 01:58:25,537 INFO L175 Difference]: Start difference. First operand has 171 places, 384 transitions, 5557 flow. Second operand 9 states and 203 transitions. [2024-06-28 01:58:25,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 504 transitions, 7990 flow [2024-06-28 01:58:25,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 504 transitions, 7733 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:25,912 INFO L231 Difference]: Finished difference. Result has 181 places, 454 transitions, 6920 flow [2024-06-28 01:58:25,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6920, PETRI_PLACES=181, PETRI_TRANSITIONS=454} [2024-06-28 01:58:25,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-28 01:58:25,914 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 454 transitions, 6920 flow [2024-06-28 01:58:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:25,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:25,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:25,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:58:25,914 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:25,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1893213862, now seen corresponding path program 2 times [2024-06-28 01:58:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570087721] [2024-06-28 01:58:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:25,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570087721] [2024-06-28 01:58:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570087721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:26,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577880258] [2024-06-28 01:58:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:26,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:26,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 454 transitions, 6920 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:26,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:26,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:28,862 INFO L124 PetriNetUnfolderBase]: 6742/10018 cut-off events. [2024-06-28 01:58:28,862 INFO L125 PetriNetUnfolderBase]: For 207128/207396 co-relation queries the response was YES. [2024-06-28 01:58:28,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75477 conditions, 10018 events. 6742/10018 cut-off events. For 207128/207396 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 58352 event pairs, 1675 based on Foata normal form. 45/9665 useless extension candidates. Maximal degree in co-relation 75388. Up to 8388 conditions per place. [2024-06-28 01:58:28,984 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 302 selfloop transitions, 216 changer transitions 0/550 dead transitions. [2024-06-28 01:58:28,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 550 transitions, 9087 flow [2024-06-28 01:58:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:58:28,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:58:28,986 INFO L175 Difference]: Start difference. First operand has 181 places, 454 transitions, 6920 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:58:28,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 550 transitions, 9087 flow [2024-06-28 01:58:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 550 transitions, 8920 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:29,473 INFO L231 Difference]: Finished difference. Result has 187 places, 496 transitions, 8048 flow [2024-06-28 01:58:29,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8048, PETRI_PLACES=187, PETRI_TRANSITIONS=496} [2024-06-28 01:58:29,473 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 135 predicate places. [2024-06-28 01:58:29,473 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 496 transitions, 8048 flow [2024-06-28 01:58:29,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:29,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:29,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:58:29,474 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:29,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1141195350, now seen corresponding path program 2 times [2024-06-28 01:58:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904322741] [2024-06-28 01:58:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:29,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:29,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904322741] [2024-06-28 01:58:29,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904322741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023970989] [2024-06-28 01:58:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:30,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:30,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 496 transitions, 8048 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:30,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:30,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:30,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:31,960 INFO L124 PetriNetUnfolderBase]: 7134/10722 cut-off events. [2024-06-28 01:58:31,960 INFO L125 PetriNetUnfolderBase]: For 195139/195149 co-relation queries the response was YES. [2024-06-28 01:58:32,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77372 conditions, 10722 events. 7134/10722 cut-off events. For 195139/195149 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 62623 event pairs, 2129 based on Foata normal form. 14/10511 useless extension candidates. Maximal degree in co-relation 77281. Up to 9643 conditions per place. [2024-06-28 01:58:32,082 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 451 selfloop transitions, 107 changer transitions 0/565 dead transitions. [2024-06-28 01:58:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 565 transitions, 9656 flow [2024-06-28 01:58:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 01:58:32,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-28 01:58:32,083 INFO L175 Difference]: Start difference. First operand has 187 places, 496 transitions, 8048 flow. Second operand 9 states and 204 transitions. [2024-06-28 01:58:32,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 565 transitions, 9656 flow [2024-06-28 01:58:32,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 565 transitions, 9378 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:32,447 INFO L231 Difference]: Finished difference. Result has 194 places, 516 transitions, 8332 flow [2024-06-28 01:58:32,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7777, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8332, PETRI_PLACES=194, PETRI_TRANSITIONS=516} [2024-06-28 01:58:32,448 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-28 01:58:32,448 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 516 transitions, 8332 flow [2024-06-28 01:58:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:32,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:32,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:32,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:58:32,448 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:32,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1144943250, now seen corresponding path program 3 times [2024-06-28 01:58:32,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:32,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849468635] [2024-06-28 01:58:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849468635] [2024-06-28 01:58:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849468635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:33,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971236972] [2024-06-28 01:58:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:33,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:33,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:33,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 516 transitions, 8332 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:33,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:33,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:33,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:34,971 INFO L124 PetriNetUnfolderBase]: 7390/11089 cut-off events. [2024-06-28 01:58:34,971 INFO L125 PetriNetUnfolderBase]: For 213123/213125 co-relation queries the response was YES. [2024-06-28 01:58:35,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81090 conditions, 11089 events. 7390/11089 cut-off events. For 213123/213125 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64810 event pairs, 1877 based on Foata normal form. 6/10865 useless extension candidates. Maximal degree in co-relation 80996. Up to 9403 conditions per place. [2024-06-28 01:58:35,124 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 470 selfloop transitions, 146 changer transitions 0/623 dead transitions. [2024-06-28 01:58:35,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 623 transitions, 10868 flow [2024-06-28 01:58:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:58:35,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-28 01:58:35,126 INFO L175 Difference]: Start difference. First operand has 194 places, 516 transitions, 8332 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:58:35,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 623 transitions, 10868 flow [2024-06-28 01:58:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 623 transitions, 10795 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:35,706 INFO L231 Difference]: Finished difference. Result has 203 places, 557 transitions, 9389 flow [2024-06-28 01:58:35,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8259, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9389, PETRI_PLACES=203, PETRI_TRANSITIONS=557} [2024-06-28 01:58:35,707 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-28 01:58:35,708 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 557 transitions, 9389 flow [2024-06-28 01:58:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:35,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:35,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:35,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:58:35,708 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:35,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1063550704, now seen corresponding path program 4 times [2024-06-28 01:58:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:35,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619557551] [2024-06-28 01:58:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619557551] [2024-06-28 01:58:36,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619557551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:36,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:36,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582465452] [2024-06-28 01:58:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:36,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:36,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:36,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 557 transitions, 9389 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:36,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:38,258 INFO L124 PetriNetUnfolderBase]: 7376/11065 cut-off events. [2024-06-28 01:58:38,258 INFO L125 PetriNetUnfolderBase]: For 233653/233655 co-relation queries the response was YES. [2024-06-28 01:58:38,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84212 conditions, 11065 events. 7376/11065 cut-off events. For 233653/233655 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64599 event pairs, 1843 based on Foata normal form. 10/10847 useless extension candidates. Maximal degree in co-relation 84114. Up to 9399 conditions per place. [2024-06-28 01:58:38,399 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 457 selfloop transitions, 159 changer transitions 0/623 dead transitions. [2024-06-28 01:58:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 623 transitions, 11202 flow [2024-06-28 01:58:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:58:38,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 01:58:38,400 INFO L175 Difference]: Start difference. First operand has 203 places, 557 transitions, 9389 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:58:38,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 623 transitions, 11202 flow [2024-06-28 01:58:39,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 623 transitions, 10926 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:39,093 INFO L231 Difference]: Finished difference. Result has 209 places, 567 transitions, 9724 flow [2024-06-28 01:58:39,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9129, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9724, PETRI_PLACES=209, PETRI_TRANSITIONS=567} [2024-06-28 01:58:39,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-28 01:58:39,094 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 567 transitions, 9724 flow [2024-06-28 01:58:39,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:39,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:39,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:39,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:58:39,095 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:39,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1144950008, now seen corresponding path program 1 times [2024-06-28 01:58:39,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:39,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874768222] [2024-06-28 01:58:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:39,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:39,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874768222] [2024-06-28 01:58:39,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874768222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:39,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:39,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828190596] [2024-06-28 01:58:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:39,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:39,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 567 transitions, 9724 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:39,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:39,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:39,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:41,922 INFO L124 PetriNetUnfolderBase]: 7358/11039 cut-off events. [2024-06-28 01:58:41,922 INFO L125 PetriNetUnfolderBase]: For 233030/233032 co-relation queries the response was YES. [2024-06-28 01:58:42,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84166 conditions, 11039 events. 7358/11039 cut-off events. For 233030/233032 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64381 event pairs, 1847 based on Foata normal form. 8/10819 useless extension candidates. Maximal degree in co-relation 84065. Up to 9415 conditions per place. [2024-06-28 01:58:42,061 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 457 selfloop transitions, 166 changer transitions 0/630 dead transitions. [2024-06-28 01:58:42,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 630 transitions, 11487 flow [2024-06-28 01:58:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:58:42,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-28 01:58:42,062 INFO L175 Difference]: Start difference. First operand has 209 places, 567 transitions, 9724 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:58:42,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 630 transitions, 11487 flow [2024-06-28 01:58:42,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 630 transitions, 11198 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:42,646 INFO L231 Difference]: Finished difference. Result has 214 places, 576 transitions, 9987 flow [2024-06-28 01:58:42,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9471, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9987, PETRI_PLACES=214, PETRI_TRANSITIONS=576} [2024-06-28 01:58:42,647 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-28 01:58:42,647 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 576 transitions, 9987 flow [2024-06-28 01:58:42,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:42,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:42,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:42,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:58:42,648 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:42,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2090636224, now seen corresponding path program 3 times [2024-06-28 01:58:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:42,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831313745] [2024-06-28 01:58:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:42,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831313745] [2024-06-28 01:58:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831313745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:43,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:43,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431476084] [2024-06-28 01:58:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:43,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 576 transitions, 9987 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:43,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:43,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:45,411 INFO L124 PetriNetUnfolderBase]: 7086/10600 cut-off events. [2024-06-28 01:58:45,411 INFO L125 PetriNetUnfolderBase]: For 273612/274296 co-relation queries the response was YES. [2024-06-28 01:58:45,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84990 conditions, 10600 events. 7086/10600 cut-off events. For 273612/274296 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 62134 event pairs, 1839 based on Foata normal form. 72/10188 useless extension candidates. Maximal degree in co-relation 84887. Up to 8433 conditions per place. [2024-06-28 01:58:45,554 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 307 selfloop transitions, 281 changer transitions 0/636 dead transitions. [2024-06-28 01:58:45,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 636 transitions, 11832 flow [2024-06-28 01:58:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:58:45,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 01:58:45,556 INFO L175 Difference]: Start difference. First operand has 214 places, 576 transitions, 9987 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:58:45,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 636 transitions, 11832 flow [2024-06-28 01:58:46,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 636 transitions, 11508 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:46,500 INFO L231 Difference]: Finished difference. Result has 215 places, 591 transitions, 10755 flow [2024-06-28 01:58:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9669, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10755, PETRI_PLACES=215, PETRI_TRANSITIONS=591} [2024-06-28 01:58:46,512 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-06-28 01:58:46,512 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 591 transitions, 10755 flow [2024-06-28 01:58:46,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:46,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:46,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:46,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:58:46,513 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:46,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash 509456608, now seen corresponding path program 5 times [2024-06-28 01:58:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:46,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459203438] [2024-06-28 01:58:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:47,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:47,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459203438] [2024-06-28 01:58:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459203438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:47,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358874803] [2024-06-28 01:58:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:47,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:47,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:47,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 591 transitions, 10755 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:47,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:47,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:49,197 INFO L124 PetriNetUnfolderBase]: 7389/11065 cut-off events. [2024-06-28 01:58:49,197 INFO L125 PetriNetUnfolderBase]: For 254999/255009 co-relation queries the response was YES. [2024-06-28 01:58:49,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86969 conditions, 11065 events. 7389/11065 cut-off events. For 254999/255009 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 64521 event pairs, 1797 based on Foata normal form. 14/10861 useless extension candidates. Maximal degree in co-relation 86865. Up to 9829 conditions per place. [2024-06-28 01:58:49,349 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 513 selfloop transitions, 123 changer transitions 0/643 dead transitions. [2024-06-28 01:58:49,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 643 transitions, 12400 flow [2024-06-28 01:58:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:58:49,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:58:49,351 INFO L175 Difference]: Start difference. First operand has 215 places, 591 transitions, 10755 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:58:49,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 643 transitions, 12400 flow [2024-06-28 01:58:50,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 643 transitions, 11884 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:50,117 INFO L231 Difference]: Finished difference. Result has 219 places, 599 transitions, 10711 flow [2024-06-28 01:58:50,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10242, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10711, PETRI_PLACES=219, PETRI_TRANSITIONS=599} [2024-06-28 01:58:50,117 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-28 01:58:50,118 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 599 transitions, 10711 flow [2024-06-28 01:58:50,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:50,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:58:50,118 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:50,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2086790240, now seen corresponding path program 2 times [2024-06-28 01:58:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:50,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050441783] [2024-06-28 01:58:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050441783] [2024-06-28 01:58:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050441783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974784826] [2024-06-28 01:58:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:50,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:50,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 599 transitions, 10711 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:50,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:50,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:53,038 INFO L124 PetriNetUnfolderBase]: 7418/11099 cut-off events. [2024-06-28 01:58:53,039 INFO L125 PetriNetUnfolderBase]: For 256611/256619 co-relation queries the response was YES. [2024-06-28 01:58:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87496 conditions, 11099 events. 7418/11099 cut-off events. For 256611/256619 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 65132 event pairs, 2355 based on Foata normal form. 10/10899 useless extension candidates. Maximal degree in co-relation 87390. Up to 10249 conditions per place. [2024-06-28 01:58:53,183 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 600 selfloop transitions, 46 changer transitions 0/653 dead transitions. [2024-06-28 01:58:53,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 653 transitions, 12419 flow [2024-06-28 01:58:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:58:53,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:58:53,184 INFO L175 Difference]: Start difference. First operand has 219 places, 599 transitions, 10711 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:58:53,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 653 transitions, 12419 flow [2024-06-28 01:58:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 653 transitions, 12318 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:53,889 INFO L231 Difference]: Finished difference. Result has 224 places, 607 transitions, 10838 flow [2024-06-28 01:58:53,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10610, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10838, PETRI_PLACES=224, PETRI_TRANSITIONS=607} [2024-06-28 01:58:53,891 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-28 01:58:53,891 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 607 transitions, 10838 flow [2024-06-28 01:58:53,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:53,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:53,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:53,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:58:53,891 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:53,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 513211018, now seen corresponding path program 6 times [2024-06-28 01:58:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:53,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164780472] [2024-06-28 01:58:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:54,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164780472] [2024-06-28 01:58:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164780472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098162666] [2024-06-28 01:58:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:54,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:54,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 607 transitions, 10838 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:54,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:54,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:54,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:56,711 INFO L124 PetriNetUnfolderBase]: 7612/11342 cut-off events. [2024-06-28 01:58:56,711 INFO L125 PetriNetUnfolderBase]: For 277065/277067 co-relation queries the response was YES. [2024-06-28 01:58:56,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91019 conditions, 11342 events. 7612/11342 cut-off events. For 277065/277067 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 65901 event pairs, 1691 based on Foata normal form. 10/11140 useless extension candidates. Maximal degree in co-relation 90911. Up to 9377 conditions per place. [2024-06-28 01:58:56,855 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 476 selfloop transitions, 199 changer transitions 0/682 dead transitions. [2024-06-28 01:58:56,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 682 transitions, 13020 flow [2024-06-28 01:58:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:58:56,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:58:56,857 INFO L175 Difference]: Start difference. First operand has 224 places, 607 transitions, 10838 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:58:56,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 682 transitions, 13020 flow [2024-06-28 01:58:57,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 682 transitions, 12845 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:57,534 INFO L231 Difference]: Finished difference. Result has 228 places, 632 transitions, 11730 flow [2024-06-28 01:58:57,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10701, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11730, PETRI_PLACES=228, PETRI_TRANSITIONS=632} [2024-06-28 01:58:57,535 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 176 predicate places. [2024-06-28 01:58:57,535 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 632 transitions, 11730 flow [2024-06-28 01:58:57,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:57,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:57,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:57,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:58:57,536 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash 513204508, now seen corresponding path program 7 times [2024-06-28 01:58:57,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:57,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014768991] [2024-06-28 01:58:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014768991] [2024-06-28 01:58:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014768991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:58,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:58,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9953960] [2024-06-28 01:58:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:58,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:58,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:58,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 632 transitions, 11730 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:58,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:58,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:58,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:00,384 INFO L124 PetriNetUnfolderBase]: 7631/11362 cut-off events. [2024-06-28 01:59:00,385 INFO L125 PetriNetUnfolderBase]: For 304184/304186 co-relation queries the response was YES. [2024-06-28 01:59:00,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95033 conditions, 11362 events. 7631/11362 cut-off events. For 304184/304186 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 65959 event pairs, 1737 based on Foata normal form. 6/11158 useless extension candidates. Maximal degree in co-relation 94922. Up to 9392 conditions per place. [2024-06-28 01:59:00,558 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 491 selfloop transitions, 189 changer transitions 0/687 dead transitions. [2024-06-28 01:59:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 687 transitions, 13615 flow [2024-06-28 01:59:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:59:00,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-28 01:59:00,560 INFO L175 Difference]: Start difference. First operand has 228 places, 632 transitions, 11730 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:59:00,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 687 transitions, 13615 flow [2024-06-28 01:59:01,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 687 transitions, 13355 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:01,696 INFO L231 Difference]: Finished difference. Result has 233 places, 638 transitions, 12125 flow [2024-06-28 01:59:01,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11504, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12125, PETRI_PLACES=233, PETRI_TRANSITIONS=638} [2024-06-28 01:59:01,697 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-28 01:59:01,697 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 638 transitions, 12125 flow [2024-06-28 01:59:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:01,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:01,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:59:01,697 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:01,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash 876044328, now seen corresponding path program 3 times [2024-06-28 01:59:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301448291] [2024-06-28 01:59:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301448291] [2024-06-28 01:59:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301448291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:02,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:02,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:02,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023033231] [2024-06-28 01:59:02,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:02,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:02,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 638 transitions, 12125 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:02,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:02,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:04,812 INFO L124 PetriNetUnfolderBase]: 7755/11533 cut-off events. [2024-06-28 01:59:04,812 INFO L125 PetriNetUnfolderBase]: For 312724/312727 co-relation queries the response was YES. [2024-06-28 01:59:04,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97614 conditions, 11533 events. 7755/11533 cut-off events. For 312724/312727 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 66764 event pairs, 1547 based on Foata normal form. 8/11313 useless extension candidates. Maximal degree in co-relation 97501. Up to 9595 conditions per place. [2024-06-28 01:59:04,984 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 494 selfloop transitions, 223 changer transitions 0/724 dead transitions. [2024-06-28 01:59:04,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 724 transitions, 14652 flow [2024-06-28 01:59:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:59:04,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:59:04,986 INFO L175 Difference]: Start difference. First operand has 233 places, 638 transitions, 12125 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:59:04,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 724 transitions, 14652 flow [2024-06-28 01:59:05,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 724 transitions, 14362 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:05,947 INFO L231 Difference]: Finished difference. Result has 240 places, 669 transitions, 13065 flow [2024-06-28 01:59:05,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11841, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13065, PETRI_PLACES=240, PETRI_TRANSITIONS=669} [2024-06-28 01:59:05,948 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-28 01:59:05,948 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 669 transitions, 13065 flow [2024-06-28 01:59:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:05,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:05,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:05,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:59:05,948 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:05,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1941775588, now seen corresponding path program 8 times [2024-06-28 01:59:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033137432] [2024-06-28 01:59:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033137432] [2024-06-28 01:59:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033137432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:06,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:06,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041754538] [2024-06-28 01:59:06,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:06,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:06,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:06,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 669 transitions, 13065 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:06,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:06,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:08,839 INFO L124 PetriNetUnfolderBase]: 7813/11643 cut-off events. [2024-06-28 01:59:08,839 INFO L125 PetriNetUnfolderBase]: For 340288/340291 co-relation queries the response was YES. [2024-06-28 01:59:08,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101490 conditions, 11643 events. 7813/11643 cut-off events. For 340288/340291 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 67677 event pairs, 1512 based on Foata normal form. 10/11413 useless extension candidates. Maximal degree in co-relation 101373. Up to 9246 conditions per place. [2024-06-28 01:59:09,043 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 480 selfloop transitions, 252 changer transitions 0/739 dead transitions. [2024-06-28 01:59:09,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 739 transitions, 15478 flow [2024-06-28 01:59:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 01:59:09,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516908212560384 [2024-06-28 01:59:09,045 INFO L175 Difference]: Start difference. First operand has 240 places, 669 transitions, 13065 flow. Second operand 9 states and 205 transitions. [2024-06-28 01:59:09,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 739 transitions, 15478 flow [2024-06-28 01:59:10,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 739 transitions, 15142 flow, removed 134 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:10,263 INFO L231 Difference]: Finished difference. Result has 248 places, 685 transitions, 13651 flow [2024-06-28 01:59:10,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12789, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13651, PETRI_PLACES=248, PETRI_TRANSITIONS=685} [2024-06-28 01:59:10,264 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 196 predicate places. [2024-06-28 01:59:10,264 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 685 transitions, 13651 flow [2024-06-28 01:59:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:10,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:59:10,265 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:10,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 876052698, now seen corresponding path program 4 times [2024-06-28 01:59:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:10,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988389306] [2024-06-28 01:59:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:10,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:10,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988389306] [2024-06-28 01:59:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988389306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:10,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516364609] [2024-06-28 01:59:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:10,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:10,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:10,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:10,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 685 transitions, 13651 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:10,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:10,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:10,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:13,589 INFO L124 PetriNetUnfolderBase]: 7854/11700 cut-off events. [2024-06-28 01:59:13,589 INFO L125 PetriNetUnfolderBase]: For 358512/358524 co-relation queries the response was YES. [2024-06-28 01:59:13,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104200 conditions, 11700 events. 7854/11700 cut-off events. For 358512/358524 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 68016 event pairs, 1507 based on Foata normal form. 6/11466 useless extension candidates. Maximal degree in co-relation 104080. Up to 9417 conditions per place. [2024-06-28 01:59:13,757 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 481 selfloop transitions, 255 changer transitions 0/743 dead transitions. [2024-06-28 01:59:13,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 743 transitions, 15843 flow [2024-06-28 01:59:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:59:13,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:59:13,759 INFO L175 Difference]: Start difference. First operand has 248 places, 685 transitions, 13651 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:59:13,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 743 transitions, 15843 flow [2024-06-28 01:59:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 743 transitions, 15495 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:14,743 INFO L231 Difference]: Finished difference. Result has 254 places, 692 transitions, 14065 flow [2024-06-28 01:59:14,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13337, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14065, PETRI_PLACES=254, PETRI_TRANSITIONS=692} [2024-06-28 01:59:14,744 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 202 predicate places. [2024-06-28 01:59:14,744 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 692 transitions, 14065 flow [2024-06-28 01:59:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:14,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:14,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:59:14,745 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash 867769870, now seen corresponding path program 9 times [2024-06-28 01:59:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544302653] [2024-06-28 01:59:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544302653] [2024-06-28 01:59:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544302653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:15,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770037312] [2024-06-28 01:59:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:15,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:15,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 692 transitions, 14065 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:15,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:15,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:15,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:18,756 INFO L124 PetriNetUnfolderBase]: 7892/11748 cut-off events. [2024-06-28 01:59:18,757 INFO L125 PetriNetUnfolderBase]: For 368302/368314 co-relation queries the response was YES. [2024-06-28 01:59:18,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105624 conditions, 11748 events. 7892/11748 cut-off events. For 368302/368314 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 68099 event pairs, 1587 based on Foata normal form. 12/11522 useless extension candidates. Maximal degree in co-relation 105501. Up to 9299 conditions per place. [2024-06-28 01:59:18,901 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 512 selfloop transitions, 230 changer transitions 0/749 dead transitions. [2024-06-28 01:59:18,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 749 transitions, 16251 flow [2024-06-28 01:59:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:59:18,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-28 01:59:18,903 INFO L175 Difference]: Start difference. First operand has 254 places, 692 transitions, 14065 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:59:18,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 749 transitions, 16251 flow [2024-06-28 01:59:20,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 749 transitions, 15746 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:20,030 INFO L231 Difference]: Finished difference. Result has 258 places, 698 transitions, 14205 flow [2024-06-28 01:59:20,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13568, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14205, PETRI_PLACES=258, PETRI_TRANSITIONS=698} [2024-06-28 01:59:20,031 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-06-28 01:59:20,031 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 698 transitions, 14205 flow [2024-06-28 01:59:20,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:20,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:20,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:20,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:59:20,032 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:20,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash 867763360, now seen corresponding path program 10 times [2024-06-28 01:59:20,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:20,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823761130] [2024-06-28 01:59:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:20,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:20,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:20,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823761130] [2024-06-28 01:59:20,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823761130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:20,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:20,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907543021] [2024-06-28 01:59:20,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:20,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:20,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:20,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 698 transitions, 14205 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:20,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:20,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:20,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:23,617 INFO L124 PetriNetUnfolderBase]: 7882/11734 cut-off events. [2024-06-28 01:59:23,618 INFO L125 PetriNetUnfolderBase]: For 373836/373848 co-relation queries the response was YES. [2024-06-28 01:59:23,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105795 conditions, 11734 events. 7882/11734 cut-off events. For 373836/373848 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 68023 event pairs, 1576 based on Foata normal form. 8/11504 useless extension candidates. Maximal degree in co-relation 105670. Up to 9295 conditions per place. [2024-06-28 01:59:23,868 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 507 selfloop transitions, 239 changer transitions 0/753 dead transitions. [2024-06-28 01:59:23,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 753 transitions, 16369 flow [2024-06-28 01:59:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:59:23,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:59:23,870 INFO L175 Difference]: Start difference. First operand has 258 places, 698 transitions, 14205 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:59:23,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 753 transitions, 16369 flow [2024-06-28 01:59:24,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 753 transitions, 15444 flow, removed 131 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:24,968 INFO L231 Difference]: Finished difference. Result has 261 places, 703 transitions, 13931 flow [2024-06-28 01:59:24,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13307, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13931, PETRI_PLACES=261, PETRI_TRANSITIONS=703} [2024-06-28 01:59:24,970 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-28 01:59:24,970 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 703 transitions, 13931 flow [2024-06-28 01:59:24,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:24,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:24,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:59:24,971 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:24,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 867770118, now seen corresponding path program 5 times [2024-06-28 01:59:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757825610] [2024-06-28 01:59:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757825610] [2024-06-28 01:59:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757825610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:25,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215153821] [2024-06-28 01:59:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:25,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:25,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:25,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 703 transitions, 13931 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:25,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:25,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:25,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:28,820 INFO L124 PetriNetUnfolderBase]: 7861/11709 cut-off events. [2024-06-28 01:59:28,820 INFO L125 PetriNetUnfolderBase]: For 371857/371869 co-relation queries the response was YES. [2024-06-28 01:59:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103888 conditions, 11709 events. 7861/11709 cut-off events. For 371857/371869 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 67971 event pairs, 1565 based on Foata normal form. 10/11479 useless extension candidates. Maximal degree in co-relation 103762. Up to 9719 conditions per place. [2024-06-28 01:59:29,013 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 534 selfloop transitions, 210 changer transitions 0/751 dead transitions. [2024-06-28 01:59:29,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 751 transitions, 15842 flow [2024-06-28 01:59:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:59:29,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:59:29,015 INFO L175 Difference]: Start difference. First operand has 261 places, 703 transitions, 13931 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:59:29,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 751 transitions, 15842 flow [2024-06-28 01:59:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 751 transitions, 15307 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:30,272 INFO L231 Difference]: Finished difference. Result has 265 places, 704 transitions, 13864 flow [2024-06-28 01:59:30,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13396, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13864, PETRI_PLACES=265, PETRI_TRANSITIONS=704} [2024-06-28 01:59:30,273 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 213 predicate places. [2024-06-28 01:59:30,273 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 704 transitions, 13864 flow [2024-06-28 01:59:30,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:30,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:30,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:59:30,273 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -934769695, now seen corresponding path program 1 times [2024-06-28 01:59:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365664293] [2024-06-28 01:59:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:30,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:30,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365664293] [2024-06-28 01:59:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365664293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:30,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010113689] [2024-06-28 01:59:30,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:30,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:30,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:30,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 704 transitions, 13864 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:30,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:30,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:30,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:33,731 INFO L124 PetriNetUnfolderBase]: 7795/11699 cut-off events. [2024-06-28 01:59:33,731 INFO L125 PetriNetUnfolderBase]: For 373218/373266 co-relation queries the response was YES. [2024-06-28 01:59:33,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102721 conditions, 11699 events. 7795/11699 cut-off events. For 373218/373266 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 69048 event pairs, 2331 based on Foata normal form. 36/11491 useless extension candidates. Maximal degree in co-relation 102594. Up to 10711 conditions per place. [2024-06-28 01:59:33,874 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 669 selfloop transitions, 51 changer transitions 0/727 dead transitions. [2024-06-28 01:59:33,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 727 transitions, 15492 flow [2024-06-28 01:59:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:59:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:59:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 01:59:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-28 01:59:33,876 INFO L175 Difference]: Start difference. First operand has 265 places, 704 transitions, 13864 flow. Second operand 5 states and 113 transitions. [2024-06-28 01:59:33,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 727 transitions, 15492 flow [2024-06-28 01:59:34,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 727 transitions, 15172 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:34,942 INFO L231 Difference]: Finished difference. Result has 266 places, 704 transitions, 13671 flow [2024-06-28 01:59:34,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13548, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13671, PETRI_PLACES=266, PETRI_TRANSITIONS=704} [2024-06-28 01:59:34,944 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 214 predicate places. [2024-06-28 01:59:34,944 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 704 transitions, 13671 flow [2024-06-28 01:59:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:34,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:34,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:59:34,944 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:34,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 723943510, now seen corresponding path program 1 times [2024-06-28 01:59:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497717792] [2024-06-28 01:59:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497717792] [2024-06-28 01:59:35,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497717792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:35,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:35,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:35,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66276994] [2024-06-28 01:59:35,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:35,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:35,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:35,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:35,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:59:35,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 704 transitions, 13671 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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) [2024-06-28 01:59:35,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:35,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:59:35,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:38,937 INFO L124 PetriNetUnfolderBase]: 7905/11784 cut-off events. [2024-06-28 01:59:38,937 INFO L125 PetriNetUnfolderBase]: For 425610/425926 co-relation queries the response was YES. [2024-06-28 01:59:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105104 conditions, 11784 events. 7905/11784 cut-off events. For 425610/425926 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 69211 event pairs, 1594 based on Foata normal form. 37/11355 useless extension candidates. Maximal degree in co-relation 104976. Up to 9579 conditions per place. [2024-06-28 01:59:39,088 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 526 selfloop transitions, 185 changer transitions 0/788 dead transitions. [2024-06-28 01:59:39,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 788 transitions, 15841 flow [2024-06-28 01:59:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:59:39,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2024-06-28 01:59:39,099 INFO L175 Difference]: Start difference. First operand has 266 places, 704 transitions, 13671 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:59:39,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 788 transitions, 15841 flow [2024-06-28 01:59:40,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 788 transitions, 15758 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:40,213 INFO L231 Difference]: Finished difference. Result has 274 places, 720 transitions, 14245 flow [2024-06-28 01:59:40,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13590, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14245, PETRI_PLACES=274, PETRI_TRANSITIONS=720} [2024-06-28 01:59:40,216 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 222 predicate places. [2024-06-28 01:59:40,216 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 720 transitions, 14245 flow [2024-06-28 01:59:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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) [2024-06-28 01:59:40,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:40,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:40,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:59:40,217 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:40,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1993257170, now seen corresponding path program 2 times [2024-06-28 01:59:40,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:40,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604603266] [2024-06-28 01:59:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:40,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:41,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604603266] [2024-06-28 01:59:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604603266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:41,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538139478] [2024-06-28 01:59:41,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:41,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:41,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:41,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:59:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 720 transitions, 14245 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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) [2024-06-28 01:59:41,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:41,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:59:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:44,337 INFO L124 PetriNetUnfolderBase]: 8172/12137 cut-off events. [2024-06-28 01:59:44,338 INFO L125 PetriNetUnfolderBase]: For 478595/479167 co-relation queries the response was YES. [2024-06-28 01:59:44,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113694 conditions, 12137 events. 8172/12137 cut-off events. For 478595/479167 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 71419 event pairs, 1968 based on Foata normal form. 125/11782 useless extension candidates. Maximal degree in co-relation 113563. Up to 10171 conditions per place. [2024-06-28 01:59:44,547 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 510 selfloop transitions, 210 changer transitions 0/797 dead transitions. [2024-06-28 01:59:44,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 797 transitions, 16502 flow [2024-06-28 01:59:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:59:44,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2024-06-28 01:59:44,548 INFO L175 Difference]: Start difference. First operand has 274 places, 720 transitions, 14245 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:59:44,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 797 transitions, 16502 flow [2024-06-28 01:59:45,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 797 transitions, 16140 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:45,967 INFO L231 Difference]: Finished difference. Result has 279 places, 734 transitions, 14659 flow [2024-06-28 01:59:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13951, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14659, PETRI_PLACES=279, PETRI_TRANSITIONS=734} [2024-06-28 01:59:45,968 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 227 predicate places. [2024-06-28 01:59:45,968 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 734 transitions, 14659 flow [2024-06-28 01:59:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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) [2024-06-28 01:59:45,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:45,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:59:45,968 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:45,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 223520765, now seen corresponding path program 1 times [2024-06-28 01:59:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788812446] [2024-06-28 01:59:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:46,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:46,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788812446] [2024-06-28 01:59:46,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788812446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:46,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:46,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:46,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172946487] [2024-06-28 01:59:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:46,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:46,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:46,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:46,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 734 transitions, 14659 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:46,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:46,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:46,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:50,017 INFO L124 PetriNetUnfolderBase]: 8547/12741 cut-off events. [2024-06-28 01:59:50,017 INFO L125 PetriNetUnfolderBase]: For 446390/446398 co-relation queries the response was YES. [2024-06-28 01:59:50,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117150 conditions, 12741 events. 8547/12741 cut-off events. For 446390/446398 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 75790 event pairs, 2357 based on Foata normal form. 10/12533 useless extension candidates. Maximal degree in co-relation 117017. Up to 11535 conditions per place. [2024-06-28 01:59:50,199 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 653 selfloop transitions, 144 changer transitions 0/804 dead transitions. [2024-06-28 01:59:50,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 804 transitions, 17131 flow [2024-06-28 01:59:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 01:59:50,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-28 01:59:50,200 INFO L175 Difference]: Start difference. First operand has 279 places, 734 transitions, 14659 flow. Second operand 9 states and 204 transitions. [2024-06-28 01:59:50,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 804 transitions, 17131 flow [2024-06-28 01:59:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 804 transitions, 16799 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:51,649 INFO L231 Difference]: Finished difference. Result has 285 places, 755 transitions, 15363 flow [2024-06-28 01:59:51,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14337, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15363, PETRI_PLACES=285, PETRI_TRANSITIONS=755} [2024-06-28 01:59:51,650 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-28 01:59:51,650 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 755 transitions, 15363 flow [2024-06-28 01:59:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:51,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:51,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:51,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:59:51,651 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:51,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 223563390, now seen corresponding path program 3 times [2024-06-28 01:59:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025582022] [2024-06-28 01:59:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025582022] [2024-06-28 01:59:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025582022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:52,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:52,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:52,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33704968] [2024-06-28 01:59:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:52,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:52,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:59:52,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 755 transitions, 15363 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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) [2024-06-28 01:59:52,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:52,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:59:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand