./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix042.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/mix042.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/mix042.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix042.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 01:37:49,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:37:49,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:37:49,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:37:49,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:37:49,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:37:49,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:37:49,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:37:49,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:37:49,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:37:49,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:37:49,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:37:49,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:37:49,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:37:49,160 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:37:49,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:37:49,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:37:49,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:37:49,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:37:49,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:37:49,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:37:49,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:37:49,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:37:49,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:37:49,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:37:49,162 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:37:49,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:37:49,163 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:37:49,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:37:49,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:37:49,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:37:49,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:37:49,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:49,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:37:49,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:37:49,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:37:49,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:37:49,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:37:49,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:37:49,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:37:49,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:37:49,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:37:49,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:37:49,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:37:49,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:37:49,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:37:49,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:37:49,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:37:49,510 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:37:49,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix042.opt.i [2024-06-28 01:37:50,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:37:50,874 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:37:50,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.opt.i [2024-06-28 01:37:50,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72963deaf/e6d2abcb093642caa97c852f08de287f/FLAG26c6ea0fe [2024-06-28 01:37:50,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72963deaf/e6d2abcb093642caa97c852f08de287f [2024-06-28 01:37:50,905 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:37:50,906 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:37:50,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix042.opt.yml/witness.yml [2024-06-28 01:37:51,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:37:51,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:37:51,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:51,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:37:51,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:37:51,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:50" (1/2) ... [2024-06-28 01:37:51,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf726ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:51, skipping insertion in model container [2024-06-28 01:37:51,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:50" (1/2) ... [2024-06-28 01:37:51,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3522c1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:51, skipping insertion in model container [2024-06-28 01:37:51,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:51" (2/2) ... [2024-06-28 01:37:51,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf726ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:51, skipping insertion in model container [2024-06-28 01:37:51,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:51" (2/2) ... [2024-06-28 01:37:51,038 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:37:51,110 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:37:51,111 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:37:51,111 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:37:51,111 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:37:51,112 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:37:51,112 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-28 01:37:51,149 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:37:51,302 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/mix042.opt.i[944,957] [2024-06-28 01:37:51,471 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:51,485 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:37:51,513 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/mix042.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:37:51,579 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:51,613 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:37:51,614 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:51 WrapperNode [2024-06-28 01:37:51,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:51,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:51,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:37:51,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:37:51,621 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,638 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,668 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-06-28 01:37:51,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:51,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:37:51,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:37:51,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:37:51,678 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,678 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,681 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,725 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 01:37:51,731 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,731 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,739 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,740 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,742 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,761 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:37:51,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:37:51,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:37:51,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:37:51,787 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 01:37:51" (1/1) ... [2024-06-28 01:37:51,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:51,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:37:51,827 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 01:37:51,834 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 01:37:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:37:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:37:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:37:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:37:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:37:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:37:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:37:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:37:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:37:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:37:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:37:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:37:51,860 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 01:37:51,972 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:37:51,974 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:37:52,303 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:37:52,304 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:37:52,427 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:37:52,427 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:37:52,428 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:52 BoogieIcfgContainer [2024-06-28 01:37:52,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:37:52,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:37:52,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:37:52,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:37:52,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:37:50" (1/4) ... [2024-06-28 01:37:52,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb6922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:37:52, skipping insertion in model container [2024-06-28 01:37:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:51" (2/4) ... [2024-06-28 01:37:52,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb6922f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:37:52, skipping insertion in model container [2024-06-28 01:37:52,435 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 01:37:51" (3/4) ... [2024-06-28 01:37:52,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb6922f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:37:52, skipping insertion in model container [2024-06-28 01:37:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:52" (4/4) ... [2024-06-28 01:37:52,437 INFO L112 eAbstractionObserver]: Analyzing ICFG mix042.opt.i [2024-06-28 01:37:52,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:37:52,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:37:52,450 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:37:52,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:37:52,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:37:52,566 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:37:52,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:52,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:37:52,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:37:52,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:37:52,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:37:52,583 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;@6250b472, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:37:52,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:37:52,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:37:52,587 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:37:52,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:52,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:52,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:37:52,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash 354130535, now seen corresponding path program 1 times [2024-06-28 01:37:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050625099] [2024-06-28 01:37:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:53,330 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 01:37:53,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:53,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050625099] [2024-06-28 01:37:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050625099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255383161] [2024-06-28 01:37:53,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:53,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:53,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:37:53,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:37:53,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:53,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:37:53,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:54,003 INFO L124 PetriNetUnfolderBase]: 3270/5350 cut-off events. [2024-06-28 01:37:54,003 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 01:37:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 5350 events. 3270/5350 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34248 event pairs, 2609 based on Foata normal form. 169/5081 useless extension candidates. Maximal degree in co-relation 10125. Up to 4711 conditions per place. [2024-06-28 01:37:54,034 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 42 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:37:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 229 flow [2024-06-28 01:37:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:37:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:37:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 01:37:54,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-28 01:37:54,044 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 100 transitions. [2024-06-28 01:37:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 229 flow [2024-06-28 01:37:54,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:54,052 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:37:54,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:37:54,056 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:37:54,056 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:37:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:37:54,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:54,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:37:54,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:54,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1017340530, now seen corresponding path program 1 times [2024-06-28 01:37:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:54,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105966765] [2024-06-28 01:37:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:54,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:54,596 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 01:37:54,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:54,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105966765] [2024-06-28 01:37:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105966765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:54,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:54,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:37:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112150097] [2024-06-28 01:37:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:54,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:37:54,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:37:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:37:54,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:37:54,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 01:37:54,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:54,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:37:54,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:55,132 INFO L124 PetriNetUnfolderBase]: 3735/5531 cut-off events. [2024-06-28 01:37:55,133 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-06-28 01:37:55,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12280 conditions, 5531 events. 3735/5531 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 31690 event pairs, 1746 based on Foata normal form. 3/5294 useless extension candidates. Maximal degree in co-relation 12268. Up to 5340 conditions per place. [2024-06-28 01:37:55,157 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 55 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 01:37:55,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 329 flow [2024-06-28 01:37:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:37:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:37:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-28 01:37:55,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6614583333333334 [2024-06-28 01:37:55,159 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 127 transitions. [2024-06-28 01:37:55,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 329 flow [2024-06-28 01:37:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:55,161 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-28 01:37:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:37:55,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:37:55,162 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-28 01:37:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 01:37:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:55,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:37:55,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:55,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1991657401, now seen corresponding path program 1 times [2024-06-28 01:37:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935844277] [2024-06-28 01:37:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:55,877 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 01:37:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935844277] [2024-06-28 01:37:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935844277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:55,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:55,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:37:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058715263] [2024-06-28 01:37:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:55,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:37:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:37:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:37:55,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:55,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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 01:37:55,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:55,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:55,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:56,658 INFO L124 PetriNetUnfolderBase]: 4757/7588 cut-off events. [2024-06-28 01:37:56,659 INFO L125 PetriNetUnfolderBase]: For 2800/2800 co-relation queries the response was YES. [2024-06-28 01:37:56,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 7588 events. 4757/7588 cut-off events. For 2800/2800 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 48041 event pairs, 2460 based on Foata normal form. 6/7083 useless extension candidates. Maximal degree in co-relation 17468. Up to 6690 conditions per place. [2024-06-28 01:37:56,734 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2024-06-28 01:37:56,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 504 flow [2024-06-28 01:37:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 01:37:56,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:37:56,736 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 6 states and 180 transitions. [2024-06-28 01:37:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 504 flow [2024-06-28 01:37:56,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 104 transitions, 476 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:56,739 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 237 flow [2024-06-28 01:37:56,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 01:37:56,740 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 01:37:56,740 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 237 flow [2024-06-28 01:37:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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 01:37:56,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:56,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:37:56,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:56,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1954755794, now seen corresponding path program 1 times [2024-06-28 01:37:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101977247] [2024-06-28 01:37:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:57,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:57,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101977247] [2024-06-28 01:37:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101977247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:37:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808019106] [2024-06-28 01:37:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:37:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:37:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:37:57,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:57,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 01:37:57,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:57,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:57,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:58,086 INFO L124 PetriNetUnfolderBase]: 4672/7188 cut-off events. [2024-06-28 01:37:58,086 INFO L125 PetriNetUnfolderBase]: For 4487/4487 co-relation queries the response was YES. [2024-06-28 01:37:58,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18462 conditions, 7188 events. 4672/7188 cut-off events. For 4487/4487 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 43039 event pairs, 1621 based on Foata normal form. 2/6894 useless extension candidates. Maximal degree in co-relation 18445. Up to 6651 conditions per place. [2024-06-28 01:37:58,117 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 65 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-28 01:37:58,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 461 flow [2024-06-28 01:37:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:37:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:37:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 01:37:58,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-06-28 01:37:58,119 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 237 flow. Second operand 5 states and 131 transitions. [2024-06-28 01:37:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 461 flow [2024-06-28 01:37:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 423 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:58,124 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 258 flow [2024-06-28 01:37:58,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 01:37:58,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:37:58,125 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 258 flow [2024-06-28 01:37:58,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 01:37:58,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:58,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:58,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:37:58,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:58,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 467889352, now seen corresponding path program 1 times [2024-06-28 01:37:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:58,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688255525] [2024-06-28 01:37:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:58,798 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 01:37:58,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688255525] [2024-06-28 01:37:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688255525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:58,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:58,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:58,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400494609] [2024-06-28 01:37:58,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:58,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:58,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:58,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 01:37:58,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:58,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:58,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:59,659 INFO L124 PetriNetUnfolderBase]: 4660/7570 cut-off events. [2024-06-28 01:37:59,660 INFO L125 PetriNetUnfolderBase]: For 6879/6879 co-relation queries the response was YES. [2024-06-28 01:37:59,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20008 conditions, 7570 events. 4660/7570 cut-off events. For 6879/6879 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49195 event pairs, 2093 based on Foata normal form. 4/7063 useless extension candidates. Maximal degree in co-relation 19989. Up to 6614 conditions per place. [2024-06-28 01:37:59,704 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 75 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-28 01:37:59,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 596 flow [2024-06-28 01:37:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:59,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:37:59,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:37:59,706 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 258 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:37:59,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 596 flow [2024-06-28 01:37:59,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 542 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:59,712 INFO L231 Difference]: Finished difference. Result has 68 places, 77 transitions, 382 flow [2024-06-28 01:37:59,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=77} [2024-06-28 01:37:59,713 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:37:59,713 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 77 transitions, 382 flow [2024-06-28 01:37:59,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 01:37:59,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:59,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:59,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:37:59,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:59,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 466475901, now seen corresponding path program 1 times [2024-06-28 01:37:59,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341152284] [2024-06-28 01:37:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:59,778 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 01:37:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341152284] [2024-06-28 01:37:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341152284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037343530] [2024-06-28 01:37:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:59,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-28 01:37:59,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 77 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 01:37:59,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:59,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-28 01:37:59,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:59,994 INFO L124 PetriNetUnfolderBase]: 1102/2547 cut-off events. [2024-06-28 01:37:59,995 INFO L125 PetriNetUnfolderBase]: For 3986/4148 co-relation queries the response was YES. [2024-06-28 01:38:00,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 2547 events. 1102/2547 cut-off events. For 3986/4148 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20752 event pairs, 290 based on Foata normal form. 11/2382 useless extension candidates. Maximal degree in co-relation 6096. Up to 1266 conditions per place. [2024-06-28 01:38:00,009 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 30 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-28 01:38:00,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 418 flow [2024-06-28 01:38:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:38:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:38:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-28 01:38:00,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-28 01:38:00,010 INFO L175 Difference]: Start difference. First operand has 68 places, 77 transitions, 382 flow. Second operand 3 states and 108 transitions. [2024-06-28 01:38:00,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 418 flow [2024-06-28 01:38:00,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:38:00,013 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 324 flow [2024-06-28 01:38:00,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 01:38:00,014 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:38:00,014 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 324 flow [2024-06-28 01:38:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 01:38:00,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:00,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:38:00,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:00,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1982984083, now seen corresponding path program 1 times [2024-06-28 01:38:00,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:00,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714601456] [2024-06-28 01:38:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:00,501 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 01:38:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:00,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714601456] [2024-06-28 01:38:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714601456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:00,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269991781] [2024-06-28 01:38:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:00,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:00,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:00,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:00,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:00,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:01,479 INFO L124 PetriNetUnfolderBase]: 4755/7205 cut-off events. [2024-06-28 01:38:01,480 INFO L125 PetriNetUnfolderBase]: For 11681/11687 co-relation queries the response was YES. [2024-06-28 01:38:01,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20655 conditions, 7205 events. 4755/7205 cut-off events. For 11681/11687 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42135 event pairs, 1619 based on Foata normal form. 8/7157 useless extension candidates. Maximal degree in co-relation 20632. Up to 6661 conditions per place. [2024-06-28 01:38:01,513 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 86 selfloop transitions, 29 changer transitions 5/129 dead transitions. [2024-06-28 01:38:01,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 129 transitions, 795 flow [2024-06-28 01:38:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:38:01,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:38:01,515 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 324 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:38:01,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 129 transitions, 795 flow [2024-06-28 01:38:01,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 129 transitions, 767 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:01,520 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 484 flow [2024-06-28 01:38:01,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 01:38:01,521 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:38:01,521 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 484 flow [2024-06-28 01:38:01,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:01,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:01,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:01,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:38:01,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:01,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1613948081, now seen corresponding path program 2 times [2024-06-28 01:38:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164338002] [2024-06-28 01:38:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164338002] [2024-06-28 01:38:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164338002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:02,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:02,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191990487] [2024-06-28 01:38:02,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:02,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:02,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:02,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:02,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:02,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:02,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:03,031 INFO L124 PetriNetUnfolderBase]: 4271/6506 cut-off events. [2024-06-28 01:38:03,031 INFO L125 PetriNetUnfolderBase]: For 13460/13466 co-relation queries the response was YES. [2024-06-28 01:38:03,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20269 conditions, 6506 events. 4271/6506 cut-off events. For 13460/13466 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37722 event pairs, 1442 based on Foata normal form. 9/6458 useless extension candidates. Maximal degree in co-relation 20242. Up to 5978 conditions per place. [2024-06-28 01:38:03,073 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 81 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-28 01:38:03,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 123 transitions, 900 flow [2024-06-28 01:38:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:38:03,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:38:03,075 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 484 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:38:03,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 123 transitions, 900 flow [2024-06-28 01:38:03,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 123 transitions, 871 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:03,085 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 594 flow [2024-06-28 01:38:03,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=594, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-06-28 01:38:03,086 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 01:38:03,086 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 594 flow [2024-06-28 01:38:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:03,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:03,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:03,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:38:03,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:03,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1930828205, now seen corresponding path program 3 times [2024-06-28 01:38:03,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:03,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791204631] [2024-06-28 01:38:03,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:03,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:03,672 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 01:38:03,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791204631] [2024-06-28 01:38:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791204631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:03,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405395692] [2024-06-28 01:38:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:03,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:03,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 594 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:03,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:03,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:03,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:04,617 INFO L124 PetriNetUnfolderBase]: 4263/6495 cut-off events. [2024-06-28 01:38:04,618 INFO L125 PetriNetUnfolderBase]: For 14479/14484 co-relation queries the response was YES. [2024-06-28 01:38:04,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20339 conditions, 6495 events. 4263/6495 cut-off events. For 14479/14484 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37671 event pairs, 1442 based on Foata normal form. 7/6443 useless extension candidates. Maximal degree in co-relation 20310. Up to 5970 conditions per place. [2024-06-28 01:38:04,662 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 79 selfloop transitions, 33 changer transitions 0/121 dead transitions. [2024-06-28 01:38:04,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 926 flow [2024-06-28 01:38:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:38:04,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:38:04,665 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 594 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:38:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 926 flow [2024-06-28 01:38:04,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 121 transitions, 831 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:04,676 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 577 flow [2024-06-28 01:38:04,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-06-28 01:38:04,677 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-28 01:38:04,677 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 577 flow [2024-06-28 01:38:04,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:04,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:04,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:04,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:38:04,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:04,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1688058963, now seen corresponding path program 1 times [2024-06-28 01:38:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710062871] [2024-06-28 01:38:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:04,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:05,464 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 01:38:05,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:05,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710062871] [2024-06-28 01:38:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710062871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209895087] [2024-06-28 01:38:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:05,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 577 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:05,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:06,602 INFO L124 PetriNetUnfolderBase]: 4289/6538 cut-off events. [2024-06-28 01:38:06,602 INFO L125 PetriNetUnfolderBase]: For 14230/14230 co-relation queries the response was YES. [2024-06-28 01:38:06,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20378 conditions, 6538 events. 4289/6538 cut-off events. For 14230/14230 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37937 event pairs, 1384 based on Foata normal form. 2/6482 useless extension candidates. Maximal degree in co-relation 20349. Up to 6041 conditions per place. [2024-06-28 01:38:06,644 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 107 selfloop transitions, 20 changer transitions 0/136 dead transitions. [2024-06-28 01:38:06,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 136 transitions, 993 flow [2024-06-28 01:38:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:38:06,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:38:06,647 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 577 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:38:06,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 136 transitions, 993 flow [2024-06-28 01:38:06,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 903 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:06,658 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 565 flow [2024-06-28 01:38:06,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-06-28 01:38:06,660 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-28 01:38:06,661 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 565 flow [2024-06-28 01:38:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:06,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:06,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:38:06,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2022237029, now seen corresponding path program 1 times [2024-06-28 01:38:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027409921] [2024-06-28 01:38:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:07,348 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 01:38:07,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:07,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027409921] [2024-06-28 01:38:07,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027409921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:07,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:07,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:07,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864471075] [2024-06-28 01:38:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:07,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:07,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 565 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:07,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:07,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:07,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:08,320 INFO L124 PetriNetUnfolderBase]: 4331/6963 cut-off events. [2024-06-28 01:38:08,321 INFO L125 PetriNetUnfolderBase]: For 18488/18494 co-relation queries the response was YES. [2024-06-28 01:38:08,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 6963 events. 4331/6963 cut-off events. For 18488/18494 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 43243 event pairs, 1569 based on Foata normal form. 6/6770 useless extension candidates. Maximal degree in co-relation 21794. Up to 5960 conditions per place. [2024-06-28 01:38:08,363 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 112 selfloop transitions, 40 changer transitions 0/161 dead transitions. [2024-06-28 01:38:08,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 161 transitions, 1238 flow [2024-06-28 01:38:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:38:08,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-28 01:38:08,365 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 565 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:38:08,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 161 transitions, 1238 flow [2024-06-28 01:38:08,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 161 transitions, 1172 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:08,377 INFO L231 Difference]: Finished difference. Result has 85 places, 119 transitions, 870 flow [2024-06-28 01:38:08,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=85, PETRI_TRANSITIONS=119} [2024-06-28 01:38:08,378 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 01:38:08,378 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 119 transitions, 870 flow [2024-06-28 01:38:08,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:08,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:08,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:38:08,379 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:08,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1507215345, now seen corresponding path program 2 times [2024-06-28 01:38:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283258164] [2024-06-28 01:38:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283258164] [2024-06-28 01:38:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283258164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702804486] [2024-06-28 01:38:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:09,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:09,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:09,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:09,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:09,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:10,040 INFO L124 PetriNetUnfolderBase]: 4357/7095 cut-off events. [2024-06-28 01:38:10,040 INFO L125 PetriNetUnfolderBase]: For 22867/22871 co-relation queries the response was YES. [2024-06-28 01:38:10,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23617 conditions, 7095 events. 4357/7095 cut-off events. For 22867/22871 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44784 event pairs, 1655 based on Foata normal form. 6/6872 useless extension candidates. Maximal degree in co-relation 23585. Up to 5979 conditions per place. [2024-06-28 01:38:10,079 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 106 selfloop transitions, 56 changer transitions 0/171 dead transitions. [2024-06-28 01:38:10,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 171 transitions, 1443 flow [2024-06-28 01:38:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:38:10,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-28 01:38:10,081 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 870 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:38:10,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 171 transitions, 1443 flow [2024-06-28 01:38:10,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 171 transitions, 1385 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:10,098 INFO L231 Difference]: Finished difference. Result has 89 places, 125 transitions, 1015 flow [2024-06-28 01:38:10,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1015, PETRI_PLACES=89, PETRI_TRANSITIONS=125} [2024-06-28 01:38:10,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-28 01:38:10,099 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 125 transitions, 1015 flow [2024-06-28 01:38:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:10,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:10,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:10,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:38:10,100 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:10,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash 274106821, now seen corresponding path program 2 times [2024-06-28 01:38:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:10,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519434668] [2024-06-28 01:38:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:10,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:10,758 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 01:38:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519434668] [2024-06-28 01:38:10,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519434668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:10,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:10,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824643157] [2024-06-28 01:38:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:10,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:10,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 125 transitions, 1015 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:10,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:10,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:10,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:11,739 INFO L124 PetriNetUnfolderBase]: 4399/7066 cut-off events. [2024-06-28 01:38:11,740 INFO L125 PetriNetUnfolderBase]: For 28356/28366 co-relation queries the response was YES. [2024-06-28 01:38:11,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24752 conditions, 7066 events. 4399/7066 cut-off events. For 28356/28366 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 43878 event pairs, 1557 based on Foata normal form. 12/6876 useless extension candidates. Maximal degree in co-relation 24719. Up to 6032 conditions per place. [2024-06-28 01:38:11,788 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 113 selfloop transitions, 48 changer transitions 0/170 dead transitions. [2024-06-28 01:38:11,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 170 transitions, 1553 flow [2024-06-28 01:38:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:38:11,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:38:11,790 INFO L175 Difference]: Start difference. First operand has 89 places, 125 transitions, 1015 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:38:11,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 170 transitions, 1553 flow [2024-06-28 01:38:11,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 170 transitions, 1490 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:11,818 INFO L231 Difference]: Finished difference. Result has 94 places, 133 transitions, 1150 flow [2024-06-28 01:38:11,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1150, PETRI_PLACES=94, PETRI_TRANSITIONS=133} [2024-06-28 01:38:11,819 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-28 01:38:11,819 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 133 transitions, 1150 flow [2024-06-28 01:38:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:11,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:11,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:11,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:38:11,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:11,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1330083825, now seen corresponding path program 3 times [2024-06-28 01:38:11,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:11,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592723208] [2024-06-28 01:38:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:11,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:12,492 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 01:38:12,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:12,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592723208] [2024-06-28 01:38:12,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592723208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:12,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:12,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:12,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452632091] [2024-06-28 01:38:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:12,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:12,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:12,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 133 transitions, 1150 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:12,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:12,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:12,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:13,520 INFO L124 PetriNetUnfolderBase]: 4394/6786 cut-off events. [2024-06-28 01:38:13,520 INFO L125 PetriNetUnfolderBase]: For 30466/30466 co-relation queries the response was YES. [2024-06-28 01:38:13,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25002 conditions, 6786 events. 4394/6786 cut-off events. For 30466/30466 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39909 event pairs, 1545 based on Foata normal form. 2/6679 useless extension candidates. Maximal degree in co-relation 24966. Up to 6032 conditions per place. [2024-06-28 01:38:13,568 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 56 changer transitions 0/174 dead transitions. [2024-06-28 01:38:13,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 174 transitions, 1610 flow [2024-06-28 01:38:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:38:13,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:38:13,570 INFO L175 Difference]: Start difference. First operand has 94 places, 133 transitions, 1150 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:38:13,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 174 transitions, 1610 flow [2024-06-28 01:38:13,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 1533 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:13,601 INFO L231 Difference]: Finished difference. Result has 99 places, 133 transitions, 1196 flow [2024-06-28 01:38:13,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1196, PETRI_PLACES=99, PETRI_TRANSITIONS=133} [2024-06-28 01:38:13,601 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-28 01:38:13,602 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 133 transitions, 1196 flow [2024-06-28 01:38:13,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:13,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:13,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:13,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:38:13,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:13,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2047616937, now seen corresponding path program 3 times [2024-06-28 01:38:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354600126] [2024-06-28 01:38:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:14,217 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 01:38:14,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354600126] [2024-06-28 01:38:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354600126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303878326] [2024-06-28 01:38:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:14,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:14,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 133 transitions, 1196 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:14,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:14,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:14,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:15,240 INFO L124 PetriNetUnfolderBase]: 4384/7045 cut-off events. [2024-06-28 01:38:15,241 INFO L125 PetriNetUnfolderBase]: For 33312/33322 co-relation queries the response was YES. [2024-06-28 01:38:15,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25269 conditions, 7045 events. 4384/7045 cut-off events. For 33312/33322 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 43748 event pairs, 1555 based on Foata normal form. 12/6855 useless extension candidates. Maximal degree in co-relation 25231. Up to 6017 conditions per place. [2024-06-28 01:38:15,277 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 117 selfloop transitions, 45 changer transitions 0/171 dead transitions. [2024-06-28 01:38:15,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 171 transitions, 1640 flow [2024-06-28 01:38:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:38:15,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:38:15,279 INFO L175 Difference]: Start difference. First operand has 99 places, 133 transitions, 1196 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:38:15,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 171 transitions, 1640 flow [2024-06-28 01:38:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 1487 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:15,299 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1143 flow [2024-06-28 01:38:15,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1143, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2024-06-28 01:38:15,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 01:38:15,300 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1143 flow [2024-06-28 01:38:15,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 01:38:15,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:15,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:38:15,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:15,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1329837561, now seen corresponding path program 1 times [2024-06-28 01:38:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836950432] [2024-06-28 01:38:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:16,376 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 01:38:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:16,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836950432] [2024-06-28 01:38:16,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836950432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:16,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836407471] [2024-06-28 01:38:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:16,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:16,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 1143 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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 01:38:16,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:16,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:16,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:17,381 INFO L124 PetriNetUnfolderBase]: 3774/6264 cut-off events. [2024-06-28 01:38:17,381 INFO L125 PetriNetUnfolderBase]: For 30695/30695 co-relation queries the response was YES. [2024-06-28 01:38:17,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22516 conditions, 6264 events. 3774/6264 cut-off events. For 30695/30695 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 39840 event pairs, 1303 based on Foata normal form. 4/6066 useless extension candidates. Maximal degree in co-relation 22477. Up to 5335 conditions per place. [2024-06-28 01:38:17,423 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 142 selfloop transitions, 17 changer transitions 0/169 dead transitions. [2024-06-28 01:38:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1587 flow [2024-06-28 01:38:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:38:17,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:38:17,425 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1143 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:38:17,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1587 flow [2024-06-28 01:38:17,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 169 transitions, 1498 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:17,448 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1134 flow [2024-06-28 01:38:17,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1134, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-28 01:38:17,448 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 01:38:17,448 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1134 flow [2024-06-28 01:38:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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 01:38:17,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:17,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:38:17,449 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:17,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1606718914, now seen corresponding path program 1 times [2024-06-28 01:38:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75532075] [2024-06-28 01:38:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:18,121 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 01:38:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75532075] [2024-06-28 01:38:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75532075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:18,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:18,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989751285] [2024-06-28 01:38:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:38:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:38:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:38:18,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:18,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:18,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:18,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:18,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:18,790 INFO L124 PetriNetUnfolderBase]: 3506/5945 cut-off events. [2024-06-28 01:38:18,790 INFO L125 PetriNetUnfolderBase]: For 34645/34661 co-relation queries the response was YES. [2024-06-28 01:38:18,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21744 conditions, 5945 events. 3506/5945 cut-off events. For 34645/34661 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 38865 event pairs, 2057 based on Foata normal form. 17/5743 useless extension candidates. Maximal degree in co-relation 21704. Up to 5031 conditions per place. [2024-06-28 01:38:18,828 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 120 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2024-06-28 01:38:18,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1519 flow [2024-06-28 01:38:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:38:18,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:38:18,830 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1134 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:38:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1519 flow [2024-06-28 01:38:18,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 159 transitions, 1455 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:18,850 INFO L231 Difference]: Finished difference. Result has 105 places, 145 transitions, 1203 flow [2024-06-28 01:38:18,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1203, PETRI_PLACES=105, PETRI_TRANSITIONS=145} [2024-06-28 01:38:18,851 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:38:18,851 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 1203 flow [2024-06-28 01:38:18,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:18,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:18,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:38:18,851 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:18,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1166313785, now seen corresponding path program 1 times [2024-06-28 01:38:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082391553] [2024-06-28 01:38:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:19,471 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 01:38:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:19,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082391553] [2024-06-28 01:38:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082391553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:19,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:19,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665702747] [2024-06-28 01:38:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:19,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:19,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:19,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:19,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:19,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:20,670 INFO L124 PetriNetUnfolderBase]: 4575/7319 cut-off events. [2024-06-28 01:38:20,670 INFO L125 PetriNetUnfolderBase]: For 46661/46665 co-relation queries the response was YES. [2024-06-28 01:38:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28416 conditions, 7319 events. 4575/7319 cut-off events. For 46661/46665 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44993 event pairs, 2132 based on Foata normal form. 8/7138 useless extension candidates. Maximal degree in co-relation 28373. Up to 6333 conditions per place. [2024-06-28 01:38:20,714 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 185 selfloop transitions, 50 changer transitions 0/244 dead transitions. [2024-06-28 01:38:20,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 244 transitions, 2204 flow [2024-06-28 01:38:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-28 01:38:20,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-06-28 01:38:20,717 INFO L175 Difference]: Start difference. First operand has 105 places, 145 transitions, 1203 flow. Second operand 11 states and 270 transitions. [2024-06-28 01:38:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 244 transitions, 2204 flow [2024-06-28 01:38:20,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 244 transitions, 2188 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:38:20,748 INFO L231 Difference]: Finished difference. Result has 118 places, 178 transitions, 1586 flow [2024-06-28 01:38:20,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1586, PETRI_PLACES=118, PETRI_TRANSITIONS=178} [2024-06-28 01:38:20,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 01:38:20,749 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 178 transitions, 1586 flow [2024-06-28 01:38:20,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:20,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:20,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:38:20,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:20,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1688568579, now seen corresponding path program 2 times [2024-06-28 01:38:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341633047] [2024-06-28 01:38:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:21,506 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 01:38:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341633047] [2024-06-28 01:38:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341633047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:21,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328849253] [2024-06-28 01:38:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:21,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:21,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:21,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:21,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 178 transitions, 1586 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:21,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:21,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:21,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:22,643 INFO L124 PetriNetUnfolderBase]: 4779/7578 cut-off events. [2024-06-28 01:38:22,643 INFO L125 PetriNetUnfolderBase]: For 57759/57763 co-relation queries the response was YES. [2024-06-28 01:38:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32165 conditions, 7578 events. 4779/7578 cut-off events. For 57759/57763 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 45904 event pairs, 1976 based on Foata normal form. 10/7399 useless extension candidates. Maximal degree in co-relation 32116. Up to 6620 conditions per place. [2024-06-28 01:38:22,719 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 190 selfloop transitions, 62 changer transitions 0/261 dead transitions. [2024-06-28 01:38:22,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 261 transitions, 2626 flow [2024-06-28 01:38:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:38:22,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:38:22,723 INFO L175 Difference]: Start difference. First operand has 118 places, 178 transitions, 1586 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:38:22,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 261 transitions, 2626 flow [2024-06-28 01:38:22,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 261 transitions, 2423 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:22,845 INFO L231 Difference]: Finished difference. Result has 125 places, 214 transitions, 1962 flow [2024-06-28 01:38:22,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1962, PETRI_PLACES=125, PETRI_TRANSITIONS=214} [2024-06-28 01:38:22,846 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:38:22,846 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 214 transitions, 1962 flow [2024-06-28 01:38:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:22,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:22,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:22,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:38:22,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:22,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1692293229, now seen corresponding path program 3 times [2024-06-28 01:38:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068186561] [2024-06-28 01:38:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:23,604 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 01:38:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068186561] [2024-06-28 01:38:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068186561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179218790] [2024-06-28 01:38:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:23,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:23,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 214 transitions, 1962 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:23,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:23,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:24,938 INFO L124 PetriNetUnfolderBase]: 5112/8097 cut-off events. [2024-06-28 01:38:24,939 INFO L125 PetriNetUnfolderBase]: For 63809/63813 co-relation queries the response was YES. [2024-06-28 01:38:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34874 conditions, 8097 events. 5112/8097 cut-off events. For 63809/63813 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 49332 event pairs, 1775 based on Foata normal form. 5/7912 useless extension candidates. Maximal degree in co-relation 34822. Up to 6361 conditions per place. [2024-06-28 01:38:25,012 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 168 selfloop transitions, 151 changer transitions 0/328 dead transitions. [2024-06-28 01:38:25,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 328 transitions, 3426 flow [2024-06-28 01:38:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:38:25,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-28 01:38:25,015 INFO L175 Difference]: Start difference. First operand has 125 places, 214 transitions, 1962 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:38:25,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 328 transitions, 3426 flow [2024-06-28 01:38:25,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 328 transitions, 3357 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:25,111 INFO L231 Difference]: Finished difference. Result has 135 places, 262 transitions, 2730 flow [2024-06-28 01:38:25,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2730, PETRI_PLACES=135, PETRI_TRANSITIONS=262} [2024-06-28 01:38:25,112 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:38:25,112 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 262 transitions, 2730 flow [2024-06-28 01:38:25,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:25,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:25,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:25,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:38:25,113 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:25,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1692287649, now seen corresponding path program 4 times [2024-06-28 01:38:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623421389] [2024-06-28 01:38:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:25,828 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 01:38:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623421389] [2024-06-28 01:38:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623421389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:25,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277847065] [2024-06-28 01:38:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:25,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:25,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 262 transitions, 2730 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:25,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:25,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:25,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:27,259 INFO L124 PetriNetUnfolderBase]: 5102/8087 cut-off events. [2024-06-28 01:38:27,259 INFO L125 PetriNetUnfolderBase]: For 73951/73955 co-relation queries the response was YES. [2024-06-28 01:38:27,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37484 conditions, 8087 events. 5102/8087 cut-off events. For 73951/73955 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 49281 event pairs, 1785 based on Foata normal form. 5/7902 useless extension candidates. Maximal degree in co-relation 37427. Up to 6353 conditions per place. [2024-06-28 01:38:27,330 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 168 selfloop transitions, 148 changer transitions 0/325 dead transitions. [2024-06-28 01:38:27,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 325 transitions, 3748 flow [2024-06-28 01:38:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:38:27,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-28 01:38:27,331 INFO L175 Difference]: Start difference. First operand has 135 places, 262 transitions, 2730 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:38:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 325 transitions, 3748 flow [2024-06-28 01:38:27,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 325 transitions, 3660 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:27,418 INFO L231 Difference]: Finished difference. Result has 142 places, 262 transitions, 2947 flow [2024-06-28 01:38:27,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2947, PETRI_PLACES=142, PETRI_TRANSITIONS=262} [2024-06-28 01:38:27,419 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 01:38:27,419 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 262 transitions, 2947 flow [2024-06-28 01:38:27,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:27,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:27,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:27,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:38:27,420 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:27,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1738884495, now seen corresponding path program 5 times [2024-06-28 01:38:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:27,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311526277] [2024-06-28 01:38:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:28,140 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 01:38:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311526277] [2024-06-28 01:38:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311526277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252286015] [2024-06-28 01:38:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:28,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:28,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 262 transitions, 2947 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:28,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:28,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:29,392 INFO L124 PetriNetUnfolderBase]: 5086/8080 cut-off events. [2024-06-28 01:38:29,392 INFO L125 PetriNetUnfolderBase]: For 78585/78589 co-relation queries the response was YES. [2024-06-28 01:38:29,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38032 conditions, 8080 events. 5086/8080 cut-off events. For 78585/78589 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 49621 event pairs, 2175 based on Foata normal form. 10/7901 useless extension candidates. Maximal degree in co-relation 37973. Up to 6922 conditions per place. [2024-06-28 01:38:29,470 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2024-06-28 01:38:29,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 310 transitions, 3804 flow [2024-06-28 01:38:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:38:29,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:38:29,472 INFO L175 Difference]: Start difference. First operand has 142 places, 262 transitions, 2947 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:38:29,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 310 transitions, 3804 flow [2024-06-28 01:38:29,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 310 transitions, 3494 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:29,641 INFO L231 Difference]: Finished difference. Result has 146 places, 265 transitions, 2896 flow [2024-06-28 01:38:29,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2896, PETRI_PLACES=146, PETRI_TRANSITIONS=265} [2024-06-28 01:38:29,642 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:38:29,642 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 265 transitions, 2896 flow [2024-06-28 01:38:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:29,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:29,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:38:29,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:29,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 520972023, now seen corresponding path program 6 times [2024-06-28 01:38:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734926091] [2024-06-28 01:38:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:30,349 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 01:38:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734926091] [2024-06-28 01:38:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734926091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:30,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175212830] [2024-06-28 01:38:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:30,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:30,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:30,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 265 transitions, 2896 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:30,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:30,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:30,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:31,749 INFO L124 PetriNetUnfolderBase]: 5254/8336 cut-off events. [2024-06-28 01:38:31,749 INFO L125 PetriNetUnfolderBase]: For 85224/85228 co-relation queries the response was YES. [2024-06-28 01:38:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39743 conditions, 8336 events. 5254/8336 cut-off events. For 85224/85228 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51257 event pairs, 1485 based on Foata normal form. 7/8153 useless extension candidates. Maximal degree in co-relation 39682. Up to 6485 conditions per place. [2024-06-28 01:38:31,831 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 169 selfloop transitions, 166 changer transitions 0/344 dead transitions. [2024-06-28 01:38:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 344 transitions, 4311 flow [2024-06-28 01:38:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:38:31,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 01:38:31,833 INFO L175 Difference]: Start difference. First operand has 146 places, 265 transitions, 2896 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:38:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 344 transitions, 4311 flow [2024-06-28 01:38:31,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 344 transitions, 4151 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:31,909 INFO L231 Difference]: Finished difference. Result has 149 places, 284 transitions, 3420 flow [2024-06-28 01:38:31,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3420, PETRI_PLACES=149, PETRI_TRANSITIONS=284} [2024-06-28 01:38:31,910 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 01:38:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 284 transitions, 3420 flow [2024-06-28 01:38:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:38:31,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 520966443, now seen corresponding path program 7 times [2024-06-28 01:38:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123630521] [2024-06-28 01:38:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:32,570 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 01:38:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123630521] [2024-06-28 01:38:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123630521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:32,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:32,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431738176] [2024-06-28 01:38:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:32,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:32,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 284 transitions, 3420 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:32,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:32,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:33,903 INFO L124 PetriNetUnfolderBase]: 5238/8318 cut-off events. [2024-06-28 01:38:33,904 INFO L125 PetriNetUnfolderBase]: For 83382/83386 co-relation queries the response was YES. [2024-06-28 01:38:33,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40130 conditions, 8318 events. 5238/8318 cut-off events. For 83382/83386 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51137 event pairs, 1504 based on Foata normal form. 7/8135 useless extension candidates. Maximal degree in co-relation 40068. Up to 6472 conditions per place. [2024-06-28 01:38:33,975 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 168 selfloop transitions, 162 changer transitions 0/339 dead transitions. [2024-06-28 01:38:33,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 339 transitions, 4443 flow [2024-06-28 01:38:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:38:33,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 01:38:33,977 INFO L175 Difference]: Start difference. First operand has 149 places, 284 transitions, 3420 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:38:33,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 339 transitions, 4443 flow [2024-06-28 01:38:34,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 339 transitions, 4113 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:34,086 INFO L231 Difference]: Finished difference. Result has 153 places, 284 transitions, 3436 flow [2024-06-28 01:38:34,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3436, PETRI_PLACES=153, PETRI_TRANSITIONS=284} [2024-06-28 01:38:34,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:38:34,087 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 284 transitions, 3436 flow [2024-06-28 01:38:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:34,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:34,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:34,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:38:34,088 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:34,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -92621445, now seen corresponding path program 8 times [2024-06-28 01:38:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900027964] [2024-06-28 01:38:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:34,778 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 01:38:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900027964] [2024-06-28 01:38:34,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900027964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:34,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:34,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769474575] [2024-06-28 01:38:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:34,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:34,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:34,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 284 transitions, 3436 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:34,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:34,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:34,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:36,176 INFO L124 PetriNetUnfolderBase]: 5314/8437 cut-off events. [2024-06-28 01:38:36,176 INFO L125 PetriNetUnfolderBase]: For 86131/86131 co-relation queries the response was YES. [2024-06-28 01:38:36,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40448 conditions, 8437 events. 5314/8437 cut-off events. For 86131/86131 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51897 event pairs, 1522 based on Foata normal form. 6/8248 useless extension candidates. Maximal degree in co-relation 40386. Up to 6538 conditions per place. [2024-06-28 01:38:36,240 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 159 selfloop transitions, 177 changer transitions 0/345 dead transitions. [2024-06-28 01:38:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 345 transitions, 4620 flow [2024-06-28 01:38:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:38:36,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:38:36,242 INFO L175 Difference]: Start difference. First operand has 153 places, 284 transitions, 3436 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:38:36,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 345 transitions, 4620 flow [2024-06-28 01:38:36,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 345 transitions, 4209 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:36,308 INFO L231 Difference]: Finished difference. Result has 155 places, 295 transitions, 3640 flow [2024-06-28 01:38:36,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3640, PETRI_PLACES=155, PETRI_TRANSITIONS=295} [2024-06-28 01:38:36,309 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-28 01:38:36,309 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 295 transitions, 3640 flow [2024-06-28 01:38:36,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:36,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:36,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:36,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:38:36,310 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:36,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1717081847, now seen corresponding path program 9 times [2024-06-28 01:38:36,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:36,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708011165] [2024-06-28 01:38:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:37,052 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 01:38:37,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708011165] [2024-06-28 01:38:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708011165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:37,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:37,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:37,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284167952] [2024-06-28 01:38:37,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:37,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:37,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:37,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:37,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:37,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 295 transitions, 3640 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:37,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:37,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:37,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:38,518 INFO L124 PetriNetUnfolderBase]: 5390/8552 cut-off events. [2024-06-28 01:38:38,519 INFO L125 PetriNetUnfolderBase]: For 88437/88437 co-relation queries the response was YES. [2024-06-28 01:38:38,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41531 conditions, 8552 events. 5390/8552 cut-off events. For 88437/88437 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52569 event pairs, 1542 based on Foata normal form. 6/8363 useless extension candidates. Maximal degree in co-relation 41468. Up to 6604 conditions per place. [2024-06-28 01:38:38,606 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 166 selfloop transitions, 176 changer transitions 0/351 dead transitions. [2024-06-28 01:38:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 351 transitions, 4788 flow [2024-06-28 01:38:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:38:38,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-28 01:38:38,608 INFO L175 Difference]: Start difference. First operand has 155 places, 295 transitions, 3640 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:38:38,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 351 transitions, 4788 flow [2024-06-28 01:38:38,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 351 transitions, 4475 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:38,814 INFO L231 Difference]: Finished difference. Result has 159 places, 303 transitions, 3836 flow [2024-06-28 01:38:38,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3836, PETRI_PLACES=159, PETRI_TRANSITIONS=303} [2024-06-28 01:38:38,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 01:38:38,815 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 303 transitions, 3836 flow [2024-06-28 01:38:38,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:38,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:38,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:38,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:38:38,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:38,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1717076267, now seen corresponding path program 10 times [2024-06-28 01:38:38,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:38,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088016529] [2024-06-28 01:38:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:39,453 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 01:38:39,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:39,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088016529] [2024-06-28 01:38:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088016529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:39,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:39,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874178483] [2024-06-28 01:38:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:39,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:39,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 303 transitions, 3836 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:39,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:40,847 INFO L124 PetriNetUnfolderBase]: 5374/8526 cut-off events. [2024-06-28 01:38:40,847 INFO L125 PetriNetUnfolderBase]: For 91468/91468 co-relation queries the response was YES. [2024-06-28 01:38:40,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41126 conditions, 8526 events. 5374/8526 cut-off events. For 91468/91468 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 52365 event pairs, 1527 based on Foata normal form. 6/8337 useless extension candidates. Maximal degree in co-relation 41062. Up to 6591 conditions per place. [2024-06-28 01:38:40,932 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 177 changer transitions 0/349 dead transitions. [2024-06-28 01:38:40,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 349 transitions, 4758 flow [2024-06-28 01:38:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:38:40,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:38:40,934 INFO L175 Difference]: Start difference. First operand has 159 places, 303 transitions, 3836 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:38:40,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 349 transitions, 4758 flow [2024-06-28 01:38:41,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 349 transitions, 4157 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:41,047 INFO L231 Difference]: Finished difference. Result has 161 places, 303 transitions, 3602 flow [2024-06-28 01:38:41,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3602, PETRI_PLACES=161, PETRI_TRANSITIONS=303} [2024-06-28 01:38:41,047 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-28 01:38:41,048 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 303 transitions, 3602 flow [2024-06-28 01:38:41,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:41,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:41,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:41,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:38:41,048 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:41,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1762600689, now seen corresponding path program 1 times [2024-06-28 01:38:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:41,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319894412] [2024-06-28 01:38:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:41,732 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 01:38:41,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:41,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319894412] [2024-06-28 01:38:41,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319894412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:41,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:41,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285901865] [2024-06-28 01:38:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:41,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:41,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:41,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 303 transitions, 3602 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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 01:38:41,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:41,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:41,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:42,782 INFO L124 PetriNetUnfolderBase]: 4937/7980 cut-off events. [2024-06-28 01:38:42,783 INFO L125 PetriNetUnfolderBase]: For 91390/91470 co-relation queries the response was YES. [2024-06-28 01:38:42,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38283 conditions, 7980 events. 4937/7980 cut-off events. For 91390/91470 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 50356 event pairs, 2468 based on Foata normal form. 43/7797 useless extension candidates. Maximal degree in co-relation 38218. Up to 6951 conditions per place. [2024-06-28 01:38:42,875 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 285 selfloop transitions, 13 changer transitions 0/326 dead transitions. [2024-06-28 01:38:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 326 transitions, 4318 flow [2024-06-28 01:38:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:38:42,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:38:42,876 INFO L175 Difference]: Start difference. First operand has 161 places, 303 transitions, 3602 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:38:42,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 326 transitions, 4318 flow [2024-06-28 01:38:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 326 transitions, 3962 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:42,962 INFO L231 Difference]: Finished difference. Result has 161 places, 306 transitions, 3308 flow [2024-06-28 01:38:42,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3308, PETRI_PLACES=161, PETRI_TRANSITIONS=306} [2024-06-28 01:38:42,962 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-28 01:38:42,963 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 306 transitions, 3308 flow [2024-06-28 01:38:42,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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 01:38:42,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:42,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:42,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:38:42,963 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:42,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 415502576, now seen corresponding path program 1 times [2024-06-28 01:38:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155237110] [2024-06-28 01:38:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:43,592 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 01:38:43,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155237110] [2024-06-28 01:38:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155237110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:43,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:43,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613988359] [2024-06-28 01:38:43,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:43,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:43,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:43,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 306 transitions, 3308 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:43,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:43,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:43,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:45,052 INFO L124 PetriNetUnfolderBase]: 5821/9334 cut-off events. [2024-06-28 01:38:45,052 INFO L125 PetriNetUnfolderBase]: For 105897/105901 co-relation queries the response was YES. [2024-06-28 01:38:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44295 conditions, 9334 events. 5821/9334 cut-off events. For 105897/105901 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 59263 event pairs, 2252 based on Foata normal form. 8/9053 useless extension candidates. Maximal degree in co-relation 44229. Up to 7884 conditions per place. [2024-06-28 01:38:45,131 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 306 selfloop transitions, 81 changer transitions 0/397 dead transitions. [2024-06-28 01:38:45,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 397 transitions, 4659 flow [2024-06-28 01:38:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-28 01:38:45,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-28 01:38:45,138 INFO L175 Difference]: Start difference. First operand has 161 places, 306 transitions, 3308 flow. Second operand 11 states and 276 transitions. [2024-06-28 01:38:45,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 397 transitions, 4659 flow [2024-06-28 01:38:45,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 397 transitions, 4619 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:45,231 INFO L231 Difference]: Finished difference. Result has 170 places, 324 transitions, 3676 flow [2024-06-28 01:38:45,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3676, PETRI_PLACES=170, PETRI_TRANSITIONS=324} [2024-06-28 01:38:45,233 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 01:38:45,233 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 324 transitions, 3676 flow [2024-06-28 01:38:45,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:45,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:45,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:38:45,235 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:45,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1754498192, now seen corresponding path program 2 times [2024-06-28 01:38:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346149177] [2024-06-28 01:38:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:45,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:45,989 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 01:38:45,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:45,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346149177] [2024-06-28 01:38:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346149177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:45,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001683472] [2024-06-28 01:38:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:45,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:46,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:46,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 324 transitions, 3676 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:46,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:46,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:46,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:47,601 INFO L124 PetriNetUnfolderBase]: 5832/9386 cut-off events. [2024-06-28 01:38:47,601 INFO L125 PetriNetUnfolderBase]: For 115577/115581 co-relation queries the response was YES. [2024-06-28 01:38:47,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45783 conditions, 9386 events. 5832/9386 cut-off events. For 115577/115581 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 59913 event pairs, 2318 based on Foata normal form. 8/9104 useless extension candidates. Maximal degree in co-relation 45714. Up to 8010 conditions per place. [2024-06-28 01:38:47,670 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 305 selfloop transitions, 80 changer transitions 0/395 dead transitions. [2024-06-28 01:38:47,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 395 transitions, 4782 flow [2024-06-28 01:38:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-28 01:38:47,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-06-28 01:38:47,672 INFO L175 Difference]: Start difference. First operand has 170 places, 324 transitions, 3676 flow. Second operand 11 states and 270 transitions. [2024-06-28 01:38:47,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 395 transitions, 4782 flow [2024-06-28 01:38:47,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 395 transitions, 4654 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:47,771 INFO L231 Difference]: Finished difference. Result has 176 places, 329 transitions, 3791 flow [2024-06-28 01:38:47,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3559, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3791, PETRI_PLACES=176, PETRI_TRANSITIONS=329} [2024-06-28 01:38:47,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 01:38:47,772 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 329 transitions, 3791 flow [2024-06-28 01:38:47,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:47,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:47,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:47,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:38:47,773 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:47,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1743295764, now seen corresponding path program 3 times [2024-06-28 01:38:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915946823] [2024-06-28 01:38:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:48,348 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 01:38:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915946823] [2024-06-28 01:38:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915946823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020707440] [2024-06-28 01:38:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:48,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:48,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 329 transitions, 3791 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:48,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:48,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:48,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:49,983 INFO L124 PetriNetUnfolderBase]: 6202/9962 cut-off events. [2024-06-28 01:38:49,984 INFO L125 PetriNetUnfolderBase]: For 129679/129683 co-relation queries the response was YES. [2024-06-28 01:38:50,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49306 conditions, 9962 events. 6202/9962 cut-off events. For 129679/129683 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 63936 event pairs, 1902 based on Foata normal form. 8/9662 useless extension candidates. Maximal degree in co-relation 49235. Up to 8065 conditions per place. [2024-06-28 01:38:50,099 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 310 selfloop transitions, 98 changer transitions 0/418 dead transitions. [2024-06-28 01:38:50,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 418 transitions, 5320 flow [2024-06-28 01:38:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 01:38:50,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-28 01:38:50,101 INFO L175 Difference]: Start difference. First operand has 176 places, 329 transitions, 3791 flow. Second operand 10 states and 253 transitions. [2024-06-28 01:38:50,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 418 transitions, 5320 flow [2024-06-28 01:38:50,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 418 transitions, 5117 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:50,251 INFO L231 Difference]: Finished difference. Result has 179 places, 349 transitions, 4130 flow [2024-06-28 01:38:50,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3606, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4130, PETRI_PLACES=179, PETRI_TRANSITIONS=349} [2024-06-28 01:38:50,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 01:38:50,252 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 349 transitions, 4130 flow [2024-06-28 01:38:50,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:50,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:50,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:50,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:38:50,253 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:50,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:50,253 INFO L85 PathProgramCache]: Analyzing trace with hash 803158390, now seen corresponding path program 4 times [2024-06-28 01:38:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506646994] [2024-06-28 01:38:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:50,988 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 01:38:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506646994] [2024-06-28 01:38:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506646994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355974318] [2024-06-28 01:38:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:51,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:51,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 349 transitions, 4130 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:51,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:51,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:51,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:52,799 INFO L124 PetriNetUnfolderBase]: 6777/10900 cut-off events. [2024-06-28 01:38:52,800 INFO L125 PetriNetUnfolderBase]: For 156807/156811 co-relation queries the response was YES. [2024-06-28 01:38:52,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56954 conditions, 10900 events. 6777/10900 cut-off events. For 156807/156811 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 71163 event pairs, 2278 based on Foata normal form. 10/10576 useless extension candidates. Maximal degree in co-relation 56881. Up to 9014 conditions per place. [2024-06-28 01:38:52,911 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 350 selfloop transitions, 102 changer transitions 0/462 dead transitions. [2024-06-28 01:38:52,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 462 transitions, 6134 flow [2024-06-28 01:38:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 01:38:52,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:38:52,913 INFO L175 Difference]: Start difference. First operand has 179 places, 349 transitions, 4130 flow. Second operand 10 states and 252 transitions. [2024-06-28 01:38:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 462 transitions, 6134 flow [2024-06-28 01:38:53,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 462 transitions, 5876 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:53,101 INFO L231 Difference]: Finished difference. Result has 185 places, 396 transitions, 4946 flow [2024-06-28 01:38:53,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4946, PETRI_PLACES=185, PETRI_TRANSITIONS=396} [2024-06-28 01:38:53,102 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 01:38:53,102 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 396 transitions, 4946 flow [2024-06-28 01:38:53,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:53,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:53,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:38:53,102 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:53,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1772739170, now seen corresponding path program 5 times [2024-06-28 01:38:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142279357] [2024-06-28 01:38:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:53,815 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 01:38:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142279357] [2024-06-28 01:38:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142279357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:53,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194844037] [2024-06-28 01:38:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:53,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:53,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:53,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 396 transitions, 4946 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:53,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:55,553 INFO L124 PetriNetUnfolderBase]: 6759/10902 cut-off events. [2024-06-28 01:38:55,553 INFO L125 PetriNetUnfolderBase]: For 156821/156825 co-relation queries the response was YES. [2024-06-28 01:38:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57093 conditions, 10902 events. 6759/10902 cut-off events. For 156821/156825 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 71506 event pairs, 2362 based on Foata normal form. 12/10566 useless extension candidates. Maximal degree in co-relation 57017. Up to 9289 conditions per place. [2024-06-28 01:38:55,672 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 356 selfloop transitions, 82 changer transitions 0/448 dead transitions. [2024-06-28 01:38:55,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 448 transitions, 6042 flow [2024-06-28 01:38:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:38:55,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:38:55,674 INFO L175 Difference]: Start difference. First operand has 185 places, 396 transitions, 4946 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:38:55,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 448 transitions, 6042 flow [2024-06-28 01:38:55,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 448 transitions, 5916 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:55,874 INFO L231 Difference]: Finished difference. Result has 191 places, 396 transitions, 5006 flow [2024-06-28 01:38:55,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5006, PETRI_PLACES=191, PETRI_TRANSITIONS=396} [2024-06-28 01:38:55,875 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-28 01:38:55,875 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 396 transitions, 5006 flow [2024-06-28 01:38:55,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:55,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:55,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:55,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:38:55,875 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:55,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 921306520, now seen corresponding path program 6 times [2024-06-28 01:38:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514564562] [2024-06-28 01:38:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:56,553 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 01:38:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514564562] [2024-06-28 01:38:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514564562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:56,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:56,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988862462] [2024-06-28 01:38:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:56,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:56,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:56,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:56,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:56,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 396 transitions, 5006 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:56,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:56,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:58,324 INFO L124 PetriNetUnfolderBase]: 6805/10983 cut-off events. [2024-06-28 01:38:58,325 INFO L125 PetriNetUnfolderBase]: For 160930/160934 co-relation queries the response was YES. [2024-06-28 01:38:58,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57706 conditions, 10983 events. 6805/10983 cut-off events. For 160930/160934 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 72247 event pairs, 2274 based on Foata normal form. 8/10648 useless extension candidates. Maximal degree in co-relation 57629. Up to 9243 conditions per place. [2024-06-28 01:38:58,441 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 309 selfloop transitions, 145 changer transitions 0/464 dead transitions. [2024-06-28 01:38:58,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 464 transitions, 6308 flow [2024-06-28 01:38:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:38:58,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-28 01:38:58,442 INFO L175 Difference]: Start difference. First operand has 191 places, 396 transitions, 5006 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:38:58,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 464 transitions, 6308 flow [2024-06-28 01:38:58,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 464 transitions, 6154 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:58,629 INFO L231 Difference]: Finished difference. Result has 194 places, 411 transitions, 5358 flow [2024-06-28 01:38:58,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5358, PETRI_PLACES=194, PETRI_TRANSITIONS=411} [2024-06-28 01:38:58,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-28 01:38:58,630 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 411 transitions, 5358 flow [2024-06-28 01:38:58,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:58,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:38:58,630 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 921491218, now seen corresponding path program 1 times [2024-06-28 01:38:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028472857] [2024-06-28 01:38:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:59,591 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 01:38:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:59,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028472857] [2024-06-28 01:38:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028472857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:59,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878776691] [2024-06-28 01:38:59,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:59,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:59,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 411 transitions, 5358 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:38:59,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:59,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:59,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:01,614 INFO L124 PetriNetUnfolderBase]: 6876/11009 cut-off events. [2024-06-28 01:39:01,615 INFO L125 PetriNetUnfolderBase]: For 176262/176270 co-relation queries the response was YES. [2024-06-28 01:39:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59083 conditions, 11009 events. 6876/11009 cut-off events. For 176262/176270 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 72188 event pairs, 2444 based on Foata normal form. 9/10697 useless extension candidates. Maximal degree in co-relation 59004. Up to 9402 conditions per place. [2024-06-28 01:39:01,724 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 383 selfloop transitions, 76 changer transitions 0/469 dead transitions. [2024-06-28 01:39:01,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 469 transitions, 6607 flow [2024-06-28 01:39:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:39:01,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:01,726 INFO L175 Difference]: Start difference. First operand has 194 places, 411 transitions, 5358 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:39:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 469 transitions, 6607 flow [2024-06-28 01:39:01,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 469 transitions, 6356 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:01,941 INFO L231 Difference]: Finished difference. Result has 199 places, 419 transitions, 5411 flow [2024-06-28 01:39:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5107, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5411, PETRI_PLACES=199, PETRI_TRANSITIONS=419} [2024-06-28 01:39:01,942 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 01:39:01,942 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 419 transitions, 5411 flow [2024-06-28 01:39:01,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:01,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:01,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:39:01,943 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:01,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1777576097, now seen corresponding path program 1 times [2024-06-28 01:39:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326186168] [2024-06-28 01:39:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:02,612 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 01:39:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326186168] [2024-06-28 01:39:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326186168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:02,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:02,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:02,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428653866] [2024-06-28 01:39:02,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:02,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:02,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:02,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 419 transitions, 5411 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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 01:39:02,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:02,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:02,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:04,205 INFO L124 PetriNetUnfolderBase]: 6513/10563 cut-off events. [2024-06-28 01:39:04,206 INFO L125 PetriNetUnfolderBase]: For 180422/180464 co-relation queries the response was YES. [2024-06-28 01:39:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57604 conditions, 10563 events. 6513/10563 cut-off events. For 180422/180464 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 70267 event pairs, 2287 based on Foata normal form. 22/10216 useless extension candidates. Maximal degree in co-relation 57524. Up to 9070 conditions per place. [2024-06-28 01:39:04,334 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 400 selfloop transitions, 34 changer transitions 0/467 dead transitions. [2024-06-28 01:39:04,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 467 transitions, 6796 flow [2024-06-28 01:39:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:39:04,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:39:04,336 INFO L175 Difference]: Start difference. First operand has 199 places, 419 transitions, 5411 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:39:04,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 467 transitions, 6796 flow [2024-06-28 01:39:04,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 467 transitions, 6563 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:04,748 INFO L231 Difference]: Finished difference. Result has 202 places, 440 transitions, 5718 flow [2024-06-28 01:39:04,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5184, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5718, PETRI_PLACES=202, PETRI_TRANSITIONS=440} [2024-06-28 01:39:04,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 01:39:04,749 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 440 transitions, 5718 flow [2024-06-28 01:39:04,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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 01:39:04,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:04,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:04,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:39:04,750 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:04,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1148060628, now seen corresponding path program 7 times [2024-06-28 01:39:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613558746] [2024-06-28 01:39:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:05,480 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 01:39:05,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:05,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613558746] [2024-06-28 01:39:05,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613558746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:05,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:05,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:05,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933727163] [2024-06-28 01:39:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:05,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:05,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:05,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:05,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 440 transitions, 5718 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:05,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:07,567 INFO L124 PetriNetUnfolderBase]: 7013/11243 cut-off events. [2024-06-28 01:39:07,568 INFO L125 PetriNetUnfolderBase]: For 196827/196831 co-relation queries the response was YES. [2024-06-28 01:39:07,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62346 conditions, 11243 events. 7013/11243 cut-off events. For 196827/196831 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 73396 event pairs, 1987 based on Foata normal form. 10/10909 useless extension candidates. Maximal degree in co-relation 62264. Up to 8766 conditions per place. [2024-06-28 01:39:07,719 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 331 selfloop transitions, 164 changer transitions 0/505 dead transitions. [2024-06-28 01:39:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 505 transitions, 7222 flow [2024-06-28 01:39:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:39:07,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 01:39:07,721 INFO L175 Difference]: Start difference. First operand has 202 places, 440 transitions, 5718 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:39:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 505 transitions, 7222 flow [2024-06-28 01:39:08,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 505 transitions, 7165 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:08,023 INFO L231 Difference]: Finished difference. Result has 208 places, 444 transitions, 6115 flow [2024-06-28 01:39:08,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6115, PETRI_PLACES=208, PETRI_TRANSITIONS=444} [2024-06-28 01:39:08,023 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-28 01:39:08,024 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 444 transitions, 6115 flow [2024-06-28 01:39:08,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:08,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:08,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:39:08,024 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:08,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1926355946, now seen corresponding path program 8 times [2024-06-28 01:39:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657422148] [2024-06-28 01:39:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657422148] [2024-06-28 01:39:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657422148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093324199] [2024-06-28 01:39:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:08,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:08,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 444 transitions, 6115 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:08,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:08,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:08,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:10,698 INFO L124 PetriNetUnfolderBase]: 6995/11272 cut-off events. [2024-06-28 01:39:10,699 INFO L125 PetriNetUnfolderBase]: For 208649/208653 co-relation queries the response was YES. [2024-06-28 01:39:10,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63616 conditions, 11272 events. 6995/11272 cut-off events. For 208649/208653 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74373 event pairs, 2549 based on Foata normal form. 12/10923 useless extension candidates. Maximal degree in co-relation 63533. Up to 9412 conditions per place. [2024-06-28 01:39:10,829 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 358 selfloop transitions, 124 changer transitions 0/492 dead transitions. [2024-06-28 01:39:10,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 492 transitions, 7315 flow [2024-06-28 01:39:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:39:10,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:39:10,830 INFO L175 Difference]: Start difference. First operand has 208 places, 444 transitions, 6115 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:39:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 492 transitions, 7315 flow [2024-06-28 01:39:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 492 transitions, 6955 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:11,164 INFO L231 Difference]: Finished difference. Result has 208 places, 444 transitions, 6043 flow [2024-06-28 01:39:11,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6043, PETRI_PLACES=208, PETRI_TRANSITIONS=444} [2024-06-28 01:39:11,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-28 01:39:11,165 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 444 transitions, 6043 flow [2024-06-28 01:39:11,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:11,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:11,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:11,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:39:11,165 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:11,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash 499092304, now seen corresponding path program 9 times [2024-06-28 01:39:11,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:11,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681533488] [2024-06-28 01:39:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:11,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:11,797 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 01:39:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681533488] [2024-06-28 01:39:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681533488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449033756] [2024-06-28 01:39:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:11,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:11,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:11,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 444 transitions, 6043 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:11,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:11,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:13,743 INFO L124 PetriNetUnfolderBase]: 6994/11287 cut-off events. [2024-06-28 01:39:13,743 INFO L125 PetriNetUnfolderBase]: For 188988/188992 co-relation queries the response was YES. [2024-06-28 01:39:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62493 conditions, 11287 events. 6994/11287 cut-off events. For 188988/188992 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74642 event pairs, 2095 based on Foata normal form. 8/10941 useless extension candidates. Maximal degree in co-relation 62411. Up to 9460 conditions per place. [2024-06-28 01:39:13,876 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 327 selfloop transitions, 159 changer transitions 0/496 dead transitions. [2024-06-28 01:39:13,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 496 transitions, 7367 flow [2024-06-28 01:39:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:39:13,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:13,893 INFO L175 Difference]: Start difference. First operand has 208 places, 444 transitions, 6043 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:39:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 496 transitions, 7367 flow [2024-06-28 01:39:14,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 496 transitions, 7057 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:14,155 INFO L231 Difference]: Finished difference. Result has 208 places, 446 transitions, 6115 flow [2024-06-28 01:39:14,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5733, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6115, PETRI_PLACES=208, PETRI_TRANSITIONS=446} [2024-06-28 01:39:14,157 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-28 01:39:14,157 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 446 transitions, 6115 flow [2024-06-28 01:39:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:14,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:14,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:39:14,158 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:14,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1988945946, now seen corresponding path program 2 times [2024-06-28 01:39:14,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:14,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976804927] [2024-06-28 01:39:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:15,191 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 01:39:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:15,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976804927] [2024-06-28 01:39:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976804927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:15,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:15,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:15,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038904069] [2024-06-28 01:39:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:15,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:15,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:15,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:15,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:15,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:15,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 446 transitions, 6115 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:15,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:15,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:15,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:17,242 INFO L124 PetriNetUnfolderBase]: 7062/11299 cut-off events. [2024-06-28 01:39:17,243 INFO L125 PetriNetUnfolderBase]: For 187675/187683 co-relation queries the response was YES. [2024-06-28 01:39:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62854 conditions, 11299 events. 7062/11299 cut-off events. For 187675/187683 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 74242 event pairs, 2421 based on Foata normal form. 9/10981 useless extension candidates. Maximal degree in co-relation 62772. Up to 9624 conditions per place. [2024-06-28 01:39:17,397 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 409 selfloop transitions, 79 changer transitions 0/498 dead transitions. [2024-06-28 01:39:17,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 498 transitions, 7439 flow [2024-06-28 01:39:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:39:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:39:17,399 INFO L175 Difference]: Start difference. First operand has 208 places, 446 transitions, 6115 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:39:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 498 transitions, 7439 flow [2024-06-28 01:39:17,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 498 transitions, 7093 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:17,686 INFO L231 Difference]: Finished difference. Result has 210 places, 449 transitions, 6000 flow [2024-06-28 01:39:17,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6000, PETRI_PLACES=210, PETRI_TRANSITIONS=449} [2024-06-28 01:39:17,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:39:17,687 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 449 transitions, 6000 flow [2024-06-28 01:39:17,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:17,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:17,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:39:17,688 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:17,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1182482119, now seen corresponding path program 2 times [2024-06-28 01:39:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:17,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644178221] [2024-06-28 01:39:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:18,238 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 01:39:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:18,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644178221] [2024-06-28 01:39:18,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644178221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:18,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:18,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260246269] [2024-06-28 01:39:18,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:18,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:18,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:18,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 449 transitions, 6000 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:18,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:18,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:18,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:19,884 INFO L124 PetriNetUnfolderBase]: 6666/10837 cut-off events. [2024-06-28 01:39:19,884 INFO L125 PetriNetUnfolderBase]: For 178709/178750 co-relation queries the response was YES. [2024-06-28 01:39:19,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60311 conditions, 10837 events. 6666/10837 cut-off events. For 178709/178750 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 72688 event pairs, 2120 based on Foata normal form. 22/10481 useless extension candidates. Maximal degree in co-relation 60228. Up to 9267 conditions per place. [2024-06-28 01:39:20,012 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 409 selfloop transitions, 31 changer transitions 0/474 dead transitions. [2024-06-28 01:39:20,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 474 transitions, 7034 flow [2024-06-28 01:39:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:39:20,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:39:20,013 INFO L175 Difference]: Start difference. First operand has 210 places, 449 transitions, 6000 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:39:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 474 transitions, 7034 flow [2024-06-28 01:39:20,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 474 transitions, 6845 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:20,251 INFO L231 Difference]: Finished difference. Result has 210 places, 452 transitions, 5927 flow [2024-06-28 01:39:20,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5927, PETRI_PLACES=210, PETRI_TRANSITIONS=452} [2024-06-28 01:39:20,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:39:20,252 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 452 transitions, 5927 flow [2024-06-28 01:39:20,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:20,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:20,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:20,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:39:20,253 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:20,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1689753678, now seen corresponding path program 10 times [2024-06-28 01:39:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253376275] [2024-06-28 01:39:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:20,887 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 01:39:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253376275] [2024-06-28 01:39:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253376275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661469349] [2024-06-28 01:39:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:20,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:20,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 452 transitions, 5927 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:20,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:20,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:20,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:22,989 INFO L124 PetriNetUnfolderBase]: 7042/11361 cut-off events. [2024-06-28 01:39:22,989 INFO L125 PetriNetUnfolderBase]: For 188143/188143 co-relation queries the response was YES. [2024-06-28 01:39:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63512 conditions, 11361 events. 7042/11361 cut-off events. For 188143/188143 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 75206 event pairs, 2006 based on Foata normal form. 4/11005 useless extension candidates. Maximal degree in co-relation 63428. Up to 9566 conditions per place. [2024-06-28 01:39:23,099 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 335 selfloop transitions, 154 changer transitions 0/499 dead transitions. [2024-06-28 01:39:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 499 transitions, 7223 flow [2024-06-28 01:39:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:23,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:23,101 INFO L175 Difference]: Start difference. First operand has 210 places, 452 transitions, 5927 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 499 transitions, 7223 flow [2024-06-28 01:39:23,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 499 transitions, 7147 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:23,339 INFO L231 Difference]: Finished difference. Result has 214 places, 454 transitions, 6221 flow [2024-06-28 01:39:23,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6221, PETRI_PLACES=214, PETRI_TRANSITIONS=454} [2024-06-28 01:39:23,340 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-28 01:39:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 454 transitions, 6221 flow [2024-06-28 01:39:23,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:23,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:23,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:39:23,341 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:23,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1689938376, now seen corresponding path program 3 times [2024-06-28 01:39:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797413887] [2024-06-28 01:39:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:24,262 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 01:39:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797413887] [2024-06-28 01:39:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797413887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75567661] [2024-06-28 01:39:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:24,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:24,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 454 transitions, 6221 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:24,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:24,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:24,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:26,458 INFO L124 PetriNetUnfolderBase]: 7114/11390 cut-off events. [2024-06-28 01:39:26,458 INFO L125 PetriNetUnfolderBase]: For 196233/196247 co-relation queries the response was YES. [2024-06-28 01:39:26,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63910 conditions, 11390 events. 7114/11390 cut-off events. For 196233/196247 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 74946 event pairs, 2381 based on Foata normal form. 16/11075 useless extension candidates. Maximal degree in co-relation 63825. Up to 9727 conditions per place. [2024-06-28 01:39:26,584 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 419 selfloop transitions, 74 changer transitions 0/503 dead transitions. [2024-06-28 01:39:26,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 503 transitions, 7547 flow [2024-06-28 01:39:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:39:26,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:39:26,585 INFO L175 Difference]: Start difference. First operand has 214 places, 454 transitions, 6221 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:39:26,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 503 transitions, 7547 flow [2024-06-28 01:39:26,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 503 transitions, 7213 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:26,828 INFO L231 Difference]: Finished difference. Result has 216 places, 457 transitions, 6110 flow [2024-06-28 01:39:26,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6110, PETRI_PLACES=216, PETRI_TRANSITIONS=457} [2024-06-28 01:39:26,829 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 01:39:26,829 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 457 transitions, 6110 flow [2024-06-28 01:39:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:26,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:26,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:39:26,830 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:26,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 671402886, now seen corresponding path program 4 times [2024-06-28 01:39:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525801073] [2024-06-28 01:39:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:27,766 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 01:39:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525801073] [2024-06-28 01:39:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525801073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:27,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:27,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:27,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691294104] [2024-06-28 01:39:27,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:27,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:27,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:27,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:27,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 457 transitions, 6110 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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 01:39:27,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:27,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:29,986 INFO L124 PetriNetUnfolderBase]: 7148/11438 cut-off events. [2024-06-28 01:39:29,986 INFO L125 PetriNetUnfolderBase]: For 206092/206106 co-relation queries the response was YES. [2024-06-28 01:39:30,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64935 conditions, 11438 events. 7148/11438 cut-off events. For 206092/206106 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 75285 event pairs, 2384 based on Foata normal form. 16/11125 useless extension candidates. Maximal degree in co-relation 64849. Up to 9777 conditions per place. [2024-06-28 01:39:30,118 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 415 selfloop transitions, 77 changer transitions 0/502 dead transitions. [2024-06-28 01:39:30,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 502 transitions, 7394 flow [2024-06-28 01:39:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:39:30,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:39:30,120 INFO L175 Difference]: Start difference. First operand has 216 places, 457 transitions, 6110 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:39:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 502 transitions, 7394 flow [2024-06-28 01:39:30,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 502 transitions, 7197 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:30,437 INFO L231 Difference]: Finished difference. Result has 218 places, 460 transitions, 6148 flow [2024-06-28 01:39:30,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5913, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6148, PETRI_PLACES=218, PETRI_TRANSITIONS=460} [2024-06-28 01:39:30,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-28 01:39:30,439 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 460 transitions, 6148 flow [2024-06-28 01:39:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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 01:39:30,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:30,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:39:30,444 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:30,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1926410406, now seen corresponding path program 5 times [2024-06-28 01:39:30,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:30,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836918144] [2024-06-28 01:39:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:30,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:31,406 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 01:39:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836918144] [2024-06-28 01:39:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836918144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646329139] [2024-06-28 01:39:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:31,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:31,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:31,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 460 transitions, 6148 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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 01:39:31,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:31,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:31,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:33,329 INFO L124 PetriNetUnfolderBase]: 7132/11381 cut-off events. [2024-06-28 01:39:33,330 INFO L125 PetriNetUnfolderBase]: For 215662/215676 co-relation queries the response was YES. [2024-06-28 01:39:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65450 conditions, 11381 events. 7132/11381 cut-off events. For 215662/215676 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 74678 event pairs, 2284 based on Foata normal form. 16/11078 useless extension candidates. Maximal degree in co-relation 65363. Up to 9583 conditions per place. [2024-06-28 01:39:33,477 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 403 selfloop transitions, 91 changer transitions 0/504 dead transitions. [2024-06-28 01:39:33,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 504 transitions, 7430 flow [2024-06-28 01:39:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:39:33,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:39:33,489 INFO L175 Difference]: Start difference. First operand has 218 places, 460 transitions, 6148 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:39:33,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 504 transitions, 7430 flow [2024-06-28 01:39:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 504 transitions, 7221 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:33,805 INFO L231 Difference]: Finished difference. Result has 220 places, 463 transitions, 6207 flow [2024-06-28 01:39:33,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5939, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6207, PETRI_PLACES=220, PETRI_TRANSITIONS=463} [2024-06-28 01:39:33,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-28 01:39:33,807 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 463 transitions, 6207 flow [2024-06-28 01:39:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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 01:39:33,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:33,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:39:33,808 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:33,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2131330527, now seen corresponding path program 3 times [2024-06-28 01:39:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031104833] [2024-06-28 01:39:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:34,447 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 01:39:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031104833] [2024-06-28 01:39:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031104833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287561413] [2024-06-28 01:39:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:34,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:34,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:34,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 463 transitions, 6207 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:34,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:34,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:36,080 INFO L124 PetriNetUnfolderBase]: 6674/10687 cut-off events. [2024-06-28 01:39:36,080 INFO L125 PetriNetUnfolderBase]: For 214053/214103 co-relation queries the response was YES. [2024-06-28 01:39:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62463 conditions, 10687 events. 6674/10687 cut-off events. For 214053/214103 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 70701 event pairs, 2112 based on Foata normal form. 28/10386 useless extension candidates. Maximal degree in co-relation 62375. Up to 9240 conditions per place. [2024-06-28 01:39:36,218 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 414 selfloop transitions, 35 changer transitions 0/486 dead transitions. [2024-06-28 01:39:36,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 486 transitions, 7271 flow [2024-06-28 01:39:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:39:36,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:39:36,220 INFO L175 Difference]: Start difference. First operand has 220 places, 463 transitions, 6207 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:39:36,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 486 transitions, 7271 flow [2024-06-28 01:39:36,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 486 transitions, 7027 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:36,565 INFO L231 Difference]: Finished difference. Result has 220 places, 466 transitions, 6079 flow [2024-06-28 01:39:36,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6079, PETRI_PLACES=220, PETRI_TRANSITIONS=466} [2024-06-28 01:39:36,566 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-28 01:39:36,566 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 466 transitions, 6079 flow [2024-06-28 01:39:36,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:36,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:36,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:36,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:39:36,567 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:36,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:36,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1188201991, now seen corresponding path program 1 times [2024-06-28 01:39:36,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:36,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175799516] [2024-06-28 01:39:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:37,140 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 01:39:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175799516] [2024-06-28 01:39:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175799516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006709212] [2024-06-28 01:39:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:37,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:37,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:37,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 466 transitions, 6079 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:38,871 INFO L124 PetriNetUnfolderBase]: 6583/10634 cut-off events. [2024-06-28 01:39:38,871 INFO L125 PetriNetUnfolderBase]: For 210048/210048 co-relation queries the response was YES. [2024-06-28 01:39:38,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62296 conditions, 10634 events. 6583/10634 cut-off events. For 210048/210048 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 70407 event pairs, 2541 based on Foata normal form. 1/10297 useless extension candidates. Maximal degree in co-relation 62207. Up to 9314 conditions per place. [2024-06-28 01:39:38,997 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 468 selfloop transitions, 14 changer transitions 0/493 dead transitions. [2024-06-28 01:39:38,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 493 transitions, 7256 flow [2024-06-28 01:39:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:39:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:39:38,998 INFO L175 Difference]: Start difference. First operand has 220 places, 466 transitions, 6079 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:39:38,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 493 transitions, 7256 flow [2024-06-28 01:39:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 493 transitions, 7166 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:39,286 INFO L231 Difference]: Finished difference. Result has 223 places, 473 transitions, 6135 flow [2024-06-28 01:39:39,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5989, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6135, PETRI_PLACES=223, PETRI_TRANSITIONS=473} [2024-06-28 01:39:39,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 01:39:39,287 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 473 transitions, 6135 flow [2024-06-28 01:39:39,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:39,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:39,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:39,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:39:39,287 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:39,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1193945671, now seen corresponding path program 2 times [2024-06-28 01:39:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627859406] [2024-06-28 01:39:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:39,880 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 01:39:39,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:39,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627859406] [2024-06-28 01:39:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627859406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725504144] [2024-06-28 01:39:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:39,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:39,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:39,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:39,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 473 transitions, 6135 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:39,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:39,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:39,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:41,635 INFO L124 PetriNetUnfolderBase]: 6557/10597 cut-off events. [2024-06-28 01:39:41,636 INFO L125 PetriNetUnfolderBase]: For 218383/218389 co-relation queries the response was YES. [2024-06-28 01:39:41,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63077 conditions, 10597 events. 6557/10597 cut-off events. For 218383/218389 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 70254 event pairs, 2514 based on Foata normal form. 7/10277 useless extension candidates. Maximal degree in co-relation 62986. Up to 9258 conditions per place. [2024-06-28 01:39:41,745 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 466 selfloop transitions, 19 changer transitions 0/496 dead transitions. [2024-06-28 01:39:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 496 transitions, 7285 flow [2024-06-28 01:39:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:39:41,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:39:41,746 INFO L175 Difference]: Start difference. First operand has 223 places, 473 transitions, 6135 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:39:41,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 496 transitions, 7285 flow [2024-06-28 01:39:42,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 496 transitions, 7230 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:42,020 INFO L231 Difference]: Finished difference. Result has 226 places, 476 transitions, 6174 flow [2024-06-28 01:39:42,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6080, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6174, PETRI_PLACES=226, PETRI_TRANSITIONS=476} [2024-06-28 01:39:42,021 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-28 01:39:42,021 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 476 transitions, 6174 flow [2024-06-28 01:39:42,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 01:39:42,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:42,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:39:42,022 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:42,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1193954599, now seen corresponding path program 1 times [2024-06-28 01:39:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:42,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958081047] [2024-06-28 01:39:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:42,771 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 01:39:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958081047] [2024-06-28 01:39:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958081047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281752464] [2024-06-28 01:39:42,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:42,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:42,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:42,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 476 transitions, 6174 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 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 01:39:42,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:42,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:42,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:44,471 INFO L124 PetriNetUnfolderBase]: 6420/10422 cut-off events. [2024-06-28 01:39:44,471 INFO L125 PetriNetUnfolderBase]: For 224911/224961 co-relation queries the response was YES. [2024-06-28 01:39:44,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62233 conditions, 10422 events. 6420/10422 cut-off events. For 224911/224961 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 69597 event pairs, 2686 based on Foata normal form. 31/10148 useless extension candidates. Maximal degree in co-relation 62141. Up to 9050 conditions per place. [2024-06-28 01:39:44,613 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 453 selfloop transitions, 16 changer transitions 0/505 dead transitions. [2024-06-28 01:39:44,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 505 transitions, 7332 flow [2024-06-28 01:39:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:39:44,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:39:44,614 INFO L175 Difference]: Start difference. First operand has 226 places, 476 transitions, 6174 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:39:44,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 505 transitions, 7332 flow [2024-06-28 01:39:44,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 505 transitions, 7262 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:44,905 INFO L231 Difference]: Finished difference. Result has 229 places, 479 transitions, 6184 flow [2024-06-28 01:39:44,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6104, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6184, PETRI_PLACES=229, PETRI_TRANSITIONS=479} [2024-06-28 01:39:44,906 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 01:39:44,906 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 479 transitions, 6184 flow [2024-06-28 01:39:44,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 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 01:39:44,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:44,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:39:44,907 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:44,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1756360426, now seen corresponding path program 1 times [2024-06-28 01:39:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:44,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657484547] [2024-06-28 01:39:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:45,561 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 01:39:45,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657484547] [2024-06-28 01:39:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657484547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:45,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486180353] [2024-06-28 01:39:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:45,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 479 transitions, 6184 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:47,812 INFO L124 PetriNetUnfolderBase]: 7522/11965 cut-off events. [2024-06-28 01:39:47,812 INFO L125 PetriNetUnfolderBase]: For 304379/304389 co-relation queries the response was YES. [2024-06-28 01:39:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74660 conditions, 11965 events. 7522/11965 cut-off events. For 304379/304389 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 78857 event pairs, 2463 based on Foata normal form. 26/11650 useless extension candidates. Maximal degree in co-relation 74567. Up to 9460 conditions per place. [2024-06-28 01:39:47,981 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 455 selfloop transitions, 138 changer transitions 0/603 dead transitions. [2024-06-28 01:39:47,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 603 transitions, 8654 flow [2024-06-28 01:39:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-28 01:39:47,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225694444444444 [2024-06-28 01:39:47,982 INFO L175 Difference]: Start difference. First operand has 229 places, 479 transitions, 6184 flow. Second operand 12 states and 301 transitions. [2024-06-28 01:39:47,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 603 transitions, 8654 flow [2024-06-28 01:39:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 603 transitions, 8598 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:48,442 INFO L231 Difference]: Finished difference. Result has 238 places, 512 transitions, 7145 flow [2024-06-28 01:39:48,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6128, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7145, PETRI_PLACES=238, PETRI_TRANSITIONS=512} [2024-06-28 01:39:48,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 01:39:48,443 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 512 transitions, 7145 flow [2024-06-28 01:39:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:48,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:48,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:48,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:39:48,444 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:48,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1445129014, now seen corresponding path program 2 times [2024-06-28 01:39:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:48,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250815553] [2024-06-28 01:39:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:49,128 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 01:39:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250815553] [2024-06-28 01:39:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250815553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:49,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:49,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818388499] [2024-06-28 01:39:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:49,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:49,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:49,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 512 transitions, 7145 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:49,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:49,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:49,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:51,496 INFO L124 PetriNetUnfolderBase]: 7793/12389 cut-off events. [2024-06-28 01:39:51,496 INFO L125 PetriNetUnfolderBase]: For 350519/350529 co-relation queries the response was YES. [2024-06-28 01:39:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80440 conditions, 12389 events. 7793/12389 cut-off events. For 350519/350529 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 81913 event pairs, 2710 based on Foata normal form. 26/12074 useless extension candidates. Maximal degree in co-relation 80344. Up to 10268 conditions per place. [2024-06-28 01:39:51,664 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 472 selfloop transitions, 117 changer transitions 0/599 dead transitions. [2024-06-28 01:39:51,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 599 transitions, 9051 flow [2024-06-28 01:39:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-06-28 01:39:51,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190972222222222 [2024-06-28 01:39:51,668 INFO L175 Difference]: Start difference. First operand has 238 places, 512 transitions, 7145 flow. Second operand 12 states and 299 transitions. [2024-06-28 01:39:51,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 599 transitions, 9051 flow [2024-06-28 01:39:52,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 599 transitions, 8843 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:52,168 INFO L231 Difference]: Finished difference. Result has 246 places, 520 transitions, 7405 flow [2024-06-28 01:39:52,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6941, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7405, PETRI_PLACES=246, PETRI_TRANSITIONS=520} [2024-06-28 01:39:52,168 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-28 01:39:52,169 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 520 transitions, 7405 flow [2024-06-28 01:39:52,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:52,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:52,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:52,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:39:52,169 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:52,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1515091180, now seen corresponding path program 3 times [2024-06-28 01:39:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:52,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527798822] [2024-06-28 01:39:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527798822] [2024-06-28 01:39:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527798822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:52,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435744223] [2024-06-28 01:39:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:52,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:52,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:52,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 520 transitions, 7405 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:55,599 INFO L124 PetriNetUnfolderBase]: 7757/12349 cut-off events. [2024-06-28 01:39:55,600 INFO L125 PetriNetUnfolderBase]: For 344173/344183 co-relation queries the response was YES. [2024-06-28 01:39:55,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79393 conditions, 12349 events. 7757/12349 cut-off events. For 344173/344183 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 81743 event pairs, 2775 based on Foata normal form. 30/12039 useless extension candidates. Maximal degree in co-relation 79294. Up to 10515 conditions per place. [2024-06-28 01:39:55,759 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 473 selfloop transitions, 109 changer transitions 0/592 dead transitions. [2024-06-28 01:39:55,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 592 transitions, 8961 flow [2024-06-28 01:39:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 293 transitions. [2024-06-28 01:39:55,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086805555555556 [2024-06-28 01:39:55,761 INFO L175 Difference]: Start difference. First operand has 246 places, 520 transitions, 7405 flow. Second operand 12 states and 293 transitions. [2024-06-28 01:39:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 592 transitions, 8961 flow [2024-06-28 01:39:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 592 transitions, 8664 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:56,507 INFO L231 Difference]: Finished difference. Result has 249 places, 521 transitions, 7364 flow [2024-06-28 01:39:56,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7120, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7364, PETRI_PLACES=249, PETRI_TRANSITIONS=521} [2024-06-28 01:39:56,508 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-28 01:39:56,508 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 521 transitions, 7364 flow [2024-06-28 01:39:56,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:56,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:56,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:39:56,509 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:56,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1792404282, now seen corresponding path program 4 times [2024-06-28 01:39:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985734404] [2024-06-28 01:39:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:57,191 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 01:39:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985734404] [2024-06-28 01:39:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985734404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:57,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852950190] [2024-06-28 01:39:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:57,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:57,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 521 transitions, 7364 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:39:57,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:57,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:57,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:00,098 INFO L124 PetriNetUnfolderBase]: 8715/13804 cut-off events. [2024-06-28 01:40:00,098 INFO L125 PetriNetUnfolderBase]: For 401862/401872 co-relation queries the response was YES. [2024-06-28 01:40:00,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90407 conditions, 13804 events. 8715/13804 cut-off events. For 401862/401872 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92290 event pairs, 2169 based on Foata normal form. 26/13488 useless extension candidates. Maximal degree in co-relation 90306. Up to 9429 conditions per place. [2024-06-28 01:40:00,355 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 477 selfloop transitions, 167 changer transitions 0/654 dead transitions. [2024-06-28 01:40:00,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 654 transitions, 10222 flow [2024-06-28 01:40:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-28 01:40:00,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321969696969697 [2024-06-28 01:40:00,357 INFO L175 Difference]: Start difference. First operand has 249 places, 521 transitions, 7364 flow. Second operand 11 states and 281 transitions. [2024-06-28 01:40:00,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 654 transitions, 10222 flow [2024-06-28 01:40:01,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 654 transitions, 9977 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 01:40:01,097 INFO L231 Difference]: Finished difference. Result has 252 places, 561 transitions, 8367 flow [2024-06-28 01:40:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7123, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8367, PETRI_PLACES=252, PETRI_TRANSITIONS=561} [2024-06-28 01:40:01,098 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:40:01,098 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 561 transitions, 8367 flow [2024-06-28 01:40:01,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:01,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:01,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:40:01,098 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:01,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -871891804, now seen corresponding path program 5 times [2024-06-28 01:40:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93659893] [2024-06-28 01:40:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:01,766 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 01:40:01,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93659893] [2024-06-28 01:40:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93659893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:01,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722873962] [2024-06-28 01:40:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:01,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:01,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 561 transitions, 8367 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:01,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:01,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:01,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:05,111 INFO L124 PetriNetUnfolderBase]: 10133/15983 cut-off events. [2024-06-28 01:40:05,112 INFO L125 PetriNetUnfolderBase]: For 551623/551633 co-relation queries the response was YES. [2024-06-28 01:40:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113329 conditions, 15983 events. 10133/15983 cut-off events. For 551623/551633 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 108985 event pairs, 3288 based on Foata normal form. 34/15681 useless extension candidates. Maximal degree in co-relation 113224. Up to 12427 conditions per place. [2024-06-28 01:40:05,444 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 530 selfloop transitions, 138 changer transitions 0/678 dead transitions. [2024-06-28 01:40:05,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 678 transitions, 11282 flow [2024-06-28 01:40:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-28 01:40:05,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-28 01:40:05,446 INFO L175 Difference]: Start difference. First operand has 252 places, 561 transitions, 8367 flow. Second operand 11 states and 276 transitions. [2024-06-28 01:40:05,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 678 transitions, 11282 flow [2024-06-28 01:40:06,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 678 transitions, 10972 flow, removed 102 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:06,623 INFO L231 Difference]: Finished difference. Result has 260 places, 600 transitions, 9461 flow [2024-06-28 01:40:06,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8159, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9461, PETRI_PLACES=260, PETRI_TRANSITIONS=600} [2024-06-28 01:40:06,624 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 01:40:06,624 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 600 transitions, 9461 flow [2024-06-28 01:40:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:06,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:06,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:06,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:40:06,625 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:06,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -879510826, now seen corresponding path program 6 times [2024-06-28 01:40:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:06,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921664539] [2024-06-28 01:40:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:07,397 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 01:40:07,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:07,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921664539] [2024-06-28 01:40:07,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921664539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:07,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:07,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225708758] [2024-06-28 01:40:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:07,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:07,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 600 transitions, 9461 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:07,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:11,063 INFO L124 PetriNetUnfolderBase]: 10489/16502 cut-off events. [2024-06-28 01:40:11,063 INFO L125 PetriNetUnfolderBase]: For 593928/593938 co-relation queries the response was YES. [2024-06-28 01:40:11,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118831 conditions, 16502 events. 10489/16502 cut-off events. For 593928/593938 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 112866 event pairs, 3758 based on Foata normal form. 50/16216 useless extension candidates. Maximal degree in co-relation 118722. Up to 14166 conditions per place. [2024-06-28 01:40:11,310 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 561 selfloop transitions, 91 changer transitions 0/662 dead transitions. [2024-06-28 01:40:11,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 662 transitions, 11367 flow [2024-06-28 01:40:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-28 01:40:11,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:40:11,312 INFO L175 Difference]: Start difference. First operand has 260 places, 600 transitions, 9461 flow. Second operand 10 states and 245 transitions. [2024-06-28 01:40:11,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 662 transitions, 11367 flow [2024-06-28 01:40:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 662 transitions, 11145 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:13,293 INFO L231 Difference]: Finished difference. Result has 265 places, 608 transitions, 9775 flow [2024-06-28 01:40:13,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9239, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9775, PETRI_PLACES=265, PETRI_TRANSITIONS=608} [2024-06-28 01:40:13,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-28 01:40:13,294 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 608 transitions, 9775 flow [2024-06-28 01:40:13,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:13,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:13,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:13,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:40:13,294 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:13,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1642795220, now seen corresponding path program 7 times [2024-06-28 01:40:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71141535] [2024-06-28 01:40:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:14,081 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 01:40:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71141535] [2024-06-28 01:40:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71141535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:14,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:14,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036981349] [2024-06-28 01:40:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:14,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:14,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 608 transitions, 9775 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:14,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:14,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:14,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:17,890 INFO L124 PetriNetUnfolderBase]: 10425/16422 cut-off events. [2024-06-28 01:40:17,890 INFO L125 PetriNetUnfolderBase]: For 564022/564032 co-relation queries the response was YES. [2024-06-28 01:40:18,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116710 conditions, 16422 events. 10425/16422 cut-off events. For 564022/564032 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 112330 event pairs, 3504 based on Foata normal form. 42/16128 useless extension candidates. Maximal degree in co-relation 116599. Up to 13374 conditions per place. [2024-06-28 01:40:18,248 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 554 selfloop transitions, 118 changer transitions 0/682 dead transitions. [2024-06-28 01:40:18,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 682 transitions, 11767 flow [2024-06-28 01:40:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:40:18,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 01:40:18,250 INFO L175 Difference]: Start difference. First operand has 265 places, 608 transitions, 9775 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:40:18,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 682 transitions, 11767 flow [2024-06-28 01:40:19,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 682 transitions, 11226 flow, removed 196 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:19,611 INFO L231 Difference]: Finished difference. Result has 269 places, 620 transitions, 9857 flow [2024-06-28 01:40:19,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9330, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9857, PETRI_PLACES=269, PETRI_TRANSITIONS=620} [2024-06-28 01:40:19,612 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 01:40:19,612 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 620 transitions, 9857 flow [2024-06-28 01:40:19,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:19,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:19,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:40:19,612 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:19,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1504119200, now seen corresponding path program 8 times [2024-06-28 01:40:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420198724] [2024-06-28 01:40:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:20,396 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 01:40:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420198724] [2024-06-28 01:40:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420198724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:20,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113155585] [2024-06-28 01:40:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:20,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:20,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:20,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 620 transitions, 9857 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:20,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:24,539 INFO L124 PetriNetUnfolderBase]: 10579/16645 cut-off events. [2024-06-28 01:40:24,540 INFO L125 PetriNetUnfolderBase]: For 520599/520611 co-relation queries the response was YES. [2024-06-28 01:40:24,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115903 conditions, 16645 events. 10579/16645 cut-off events. For 520599/520611 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 114049 event pairs, 3397 based on Foata normal form. 28/16336 useless extension candidates. Maximal degree in co-relation 115790. Up to 14000 conditions per place. [2024-06-28 01:40:24,768 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 465 selfloop transitions, 210 changer transitions 0/685 dead transitions. [2024-06-28 01:40:24,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 685 transitions, 11641 flow [2024-06-28 01:40:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:40:24,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:40:24,770 INFO L175 Difference]: Start difference. First operand has 269 places, 620 transitions, 9857 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:40:24,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 685 transitions, 11641 flow [2024-06-28 01:40:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 685 transitions, 11486 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:25,715 INFO L231 Difference]: Finished difference. Result has 273 places, 622 transitions, 10200 flow [2024-06-28 01:40:25,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9702, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10200, PETRI_PLACES=273, PETRI_TRANSITIONS=622} [2024-06-28 01:40:25,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-28 01:40:25,716 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 622 transitions, 10200 flow [2024-06-28 01:40:25,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:25,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:25,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:25,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:40:25,717 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:25,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash -741130546, now seen corresponding path program 9 times [2024-06-28 01:40:25,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:25,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913334285] [2024-06-28 01:40:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:25,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:26,488 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 01:40:26,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913334285] [2024-06-28 01:40:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913334285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:26,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952248755] [2024-06-28 01:40:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:26,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:26,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:26,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 622 transitions, 10200 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:26,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:26,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:30,588 INFO L124 PetriNetUnfolderBase]: 10889/17130 cut-off events. [2024-06-28 01:40:30,589 INFO L125 PetriNetUnfolderBase]: For 567169/567181 co-relation queries the response was YES. [2024-06-28 01:40:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121592 conditions, 17130 events. 10889/17130 cut-off events. For 567169/567181 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 117939 event pairs, 3413 based on Foata normal form. 24/16815 useless extension candidates. Maximal degree in co-relation 121477. Up to 14048 conditions per place. [2024-06-28 01:40:30,842 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 471 selfloop transitions, 215 changer transitions 0/696 dead transitions. [2024-06-28 01:40:30,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 696 transitions, 12280 flow [2024-06-28 01:40:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:40:30,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-06-28 01:40:30,844 INFO L175 Difference]: Start difference. First operand has 273 places, 622 transitions, 10200 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:40:30,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 696 transitions, 12280 flow [2024-06-28 01:40:32,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 696 transitions, 11912 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:32,049 INFO L231 Difference]: Finished difference. Result has 277 places, 628 transitions, 10448 flow [2024-06-28 01:40:32,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9832, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10448, PETRI_PLACES=277, PETRI_TRANSITIONS=628} [2024-06-28 01:40:32,050 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 01:40:32,050 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 628 transitions, 10448 flow [2024-06-28 01:40:32,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:32,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:32,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:32,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:40:32,050 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:32,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:32,051 INFO L85 PathProgramCache]: Analyzing trace with hash -735620296, now seen corresponding path program 10 times [2024-06-28 01:40:32,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:32,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202346702] [2024-06-28 01:40:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:32,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:32,872 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 01:40:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202346702] [2024-06-28 01:40:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202346702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790819121] [2024-06-28 01:40:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:32,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:32,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 628 transitions, 10448 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:32,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:32,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:32,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:37,016 INFO L124 PetriNetUnfolderBase]: 10853/17074 cut-off events. [2024-06-28 01:40:37,017 INFO L125 PetriNetUnfolderBase]: For 564969/564981 co-relation queries the response was YES. [2024-06-28 01:40:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120630 conditions, 17074 events. 10853/17074 cut-off events. For 564969/564981 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 117432 event pairs, 3461 based on Foata normal form. 28/16767 useless extension candidates. Maximal degree in co-relation 120513. Up to 14418 conditions per place. [2024-06-28 01:40:37,281 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 467 selfloop transitions, 214 changer transitions 0/691 dead transitions. [2024-06-28 01:40:37,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 691 transitions, 12203 flow [2024-06-28 01:40:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:40:37,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:40:37,283 INFO L175 Difference]: Start difference. First operand has 277 places, 628 transitions, 10448 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:40:37,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 691 transitions, 12203 flow [2024-06-28 01:40:38,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 691 transitions, 11763 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:38,547 INFO L231 Difference]: Finished difference. Result has 280 places, 629 transitions, 10473 flow [2024-06-28 01:40:38,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10022, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10473, PETRI_PLACES=280, PETRI_TRANSITIONS=629} [2024-06-28 01:40:38,548 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-06-28 01:40:38,548 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 629 transitions, 10473 flow [2024-06-28 01:40:38,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 01:40:38,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:38,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:38,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:40:38,549 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:38,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:38,549 INFO L85 PathProgramCache]: Analyzing trace with hash -735405094, now seen corresponding path program 1 times [2024-06-28 01:40:38,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:38,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096182837] [2024-06-28 01:40:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:38,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:39,423 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 01:40:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096182837] [2024-06-28 01:40:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096182837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:39,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98363143] [2024-06-28 01:40:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:39,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:39,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 629 transitions, 10473 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 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 01:40:39,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:39,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:39,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:44,033 INFO L124 PetriNetUnfolderBase]: 10949/17226 cut-off events. [2024-06-28 01:40:44,033 INFO L125 PetriNetUnfolderBase]: For 553961/553973 co-relation queries the response was YES. [2024-06-28 01:40:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121837 conditions, 17226 events. 10949/17226 cut-off events. For 553961/553973 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 118861 event pairs, 3356 based on Foata normal form. 20/16908 useless extension candidates. Maximal degree in co-relation 121718. Up to 13162 conditions per place. [2024-06-28 01:40:44,293 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 451 selfloop transitions, 236 changer transitions 0/697 dead transitions. [2024-06-28 01:40:44,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 697 transitions, 12321 flow [2024-06-28 01:40:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:40:44,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354166666666667 [2024-06-28 01:40:44,295 INFO L175 Difference]: Start difference. First operand has 280 places, 629 transitions, 10473 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:40:44,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 697 transitions, 12321 flow [2024-06-28 01:40:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 697 transitions, 11889 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:45,673 INFO L231 Difference]: Finished difference. Result has 282 places, 631 transitions, 10598 flow [2024-06-28 01:40:45,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10041, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10598, PETRI_PLACES=282, PETRI_TRANSITIONS=631} [2024-06-28 01:40:45,675 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 228 predicate places. [2024-06-28 01:40:45,675 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 631 transitions, 10598 flow [2024-06-28 01:40:45,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 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 01:40:45,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:45,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:45,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:40:45,679 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:45,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash -690885276, now seen corresponding path program 1 times [2024-06-28 01:40:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:45,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024017226] [2024-06-28 01:40:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:46,287 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 01:40:46,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024017226] [2024-06-28 01:40:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024017226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:46,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:46,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409519545] [2024-06-28 01:40:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:46,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:46,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:46,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:46,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 631 transitions, 10598 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:46,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:46,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:46,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand