./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/safe011_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/safe011_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:37:06,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:37:06,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:37:06,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:37:06,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:37:06,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:37:06,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:37:06,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:37:06,871 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:37:06,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:37:06,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:37:06,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:37:06,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:37:06,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:37:06,874 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:37:06,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:37:06,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:37:06,875 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:37:06,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:37:06,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:37:06,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:37:06,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:37:06,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:37:06,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:37:06,878 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:37:06,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:37:06,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:37:06,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:37:06,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:37:06,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:37:06,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:37:06,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:37:06,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:37:06,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:37:06,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:37:06,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:37:06,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:37:06,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:37:06,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:37:06,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:37:06,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:37:06,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:37:06,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:37:06,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:37:07,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:37:07,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:37:07,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:37:07,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:37:07,161 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:37:07,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-05-12 13:37:08,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:37:08,630 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:37:08,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-05-12 13:37:08,658 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3771b64b/4f1129866f53420f97d7ef640110b833/FLAG2ee64c76a [2024-05-12 13:37:08,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3771b64b/4f1129866f53420f97d7ef640110b833 [2024-05-12 13:37:08,672 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:37:08,673 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:37:08,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/safe011_power.opt_pso.opt.yml/witness.yml [2024-05-12 13:37:08,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:37:08,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:37:08,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:37:08,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:37:08,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:37:08,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:37:08" (1/2) ... [2024-05-12 13:37:08,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a828e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:37:08, skipping insertion in model container [2024-05-12 13:37:08,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:37:08" (1/2) ... [2024-05-12 13:37:08,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@315fdac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:37:08, skipping insertion in model container [2024-05-12 13:37:08,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:37:08" (2/2) ... [2024-05-12 13:37:08,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a828e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:08, skipping insertion in model container [2024-05-12 13:37:08,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:37:08" (2/2) ... [2024-05-12 13:37:08,849 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:37:08,930 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:37:08,932 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-05-12 13:37:08,932 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-05-12 13:37:08,932 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-05-12 13:37:08,932 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:37:08,933 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-05-12 13:37:08,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:37:09,194 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i[959,972] [2024-05-12 13:37:09,382 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:37:09,401 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:37:09,440 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i[959,972] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:37:09,543 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:37:09,593 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:37:09,594 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09 WrapperNode [2024-05-12 13:37:09,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:37:09,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:37:09,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:37:09,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:37:09,603 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 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,640 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 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,671 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-05-12 13:37:09,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:37:09,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:37:09,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:37:09,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:37:09,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,708 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:37:09,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:37:09,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:37:09,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:37:09,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:37:09,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (1/1) ... [2024-05-12 13:37:09,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:37:09,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:37:09,785 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) [2024-05-12 13:37:09,808 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 [2024-05-12 13:37:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:37:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:37:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:37:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:37:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:37:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:37:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:37:09,831 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:37:09,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:37:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:37:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:37:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:37:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:37:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:37:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:37:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:37:09,836 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:37:09,992 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:37:09,993 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:37:10,376 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:37:10,379 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:37:10,559 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:37:10,559 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:37:10,560 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:37:10 BoogieIcfgContainer [2024-05-12 13:37:10,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:37:10,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:37:10,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:37:10,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:37:10,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:37:08" (1/4) ... [2024-05-12 13:37:10,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:37:10, skipping insertion in model container [2024-05-12 13:37:10,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:37:08" (2/4) ... [2024-05-12 13:37:10,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f55bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:37:10, skipping insertion in model container [2024-05-12 13:37:10,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:37:09" (3/4) ... [2024-05-12 13:37:10,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f55bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:37:10, skipping insertion in model container [2024-05-12 13:37:10,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:37:10" (4/4) ... [2024-05-12 13:37:10,571 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2024-05-12 13:37:10,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:37:10,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:37:10,588 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:37:10,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:37:10,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:37:10,718 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:37:10,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:37:10,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 13:37:10,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:37:10,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:37:10,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:37:10,749 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;@4ecf2fb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:37:10,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:37:10,756 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:37:10,756 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:37:10,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:37:10,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:10,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:37:10,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:10,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1744727070, now seen corresponding path program 1 times [2024-05-12 13:37:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552727735] [2024-05-12 13:37:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:10,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552727735] [2024-05-12 13:37:12,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552727735] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:12,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:12,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:37:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997826756] [2024-05-12 13:37:12,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:12,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:37:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:37:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:37:12,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:37:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:12,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:12,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:37:12,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:13,115 INFO L124 PetriNetUnfolderBase]: 4271/6779 cut-off events. [2024-05-12 13:37:13,115 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-05-12 13:37:13,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13025 conditions, 6779 events. 4271/6779 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42008 event pairs, 3544 based on Foata normal form. 211/6465 useless extension candidates. Maximal degree in co-relation 13010. Up to 6128 conditions per place. [2024-05-12 13:37:13,164 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 45 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:37:13,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 233 flow [2024-05-12 13:37:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:37:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:37:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-05-12 13:37:13,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-05-12 13:37:13,227 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 91 transitions. [2024-05-12 13:37:13,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 233 flow [2024-05-12 13:37:13,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:13,234 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:37:13,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 13:37:13,239 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:37:13,239 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:37:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:13,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:13,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:37:13,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1645448959, now seen corresponding path program 1 times [2024-05-12 13:37:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187173897] [2024-05-12 13:37:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:14,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:14,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187173897] [2024-05-12 13:37:14,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187173897] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:14,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:14,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:37:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044028894] [2024-05-12 13:37:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:14,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:37:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:37:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:37:14,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:37:14,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:14,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:14,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:37:14,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:14,976 INFO L124 PetriNetUnfolderBase]: 4323/6233 cut-off events. [2024-05-12 13:37:14,977 INFO L125 PetriNetUnfolderBase]: For 838/853 co-relation queries the response was YES. [2024-05-12 13:37:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14031 conditions, 6233 events. 4323/6233 cut-off events. For 838/853 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 33541 event pairs, 2173 based on Foata normal form. 8/5953 useless extension candidates. Maximal degree in co-relation 14016. Up to 6074 conditions per place. [2024-05-12 13:37:15,016 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 61 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-05-12 13:37:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 375 flow [2024-05-12 13:37:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:37:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:37:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-05-12 13:37:15,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-05-12 13:37:15,023 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 123 transitions. [2024-05-12 13:37:15,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 375 flow [2024-05-12 13:37:15,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:15,027 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 219 flow [2024-05-12 13:37:15,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-05-12 13:37:15,030 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-05-12 13:37:15,030 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 219 flow [2024-05-12 13:37:15,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:15,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:15,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:37:15,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:15,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 530690505, now seen corresponding path program 1 times [2024-05-12 13:37:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535834973] [2024-05-12 13:37:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:15,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535834973] [2024-05-12 13:37:15,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535834973] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:15,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:37:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182740459] [2024-05-12 13:37:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:37:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:37:15,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:37:15,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:37:15,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:15,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:15,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:37:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:16,831 INFO L124 PetriNetUnfolderBase]: 4383/6932 cut-off events. [2024-05-12 13:37:16,831 INFO L125 PetriNetUnfolderBase]: For 3505/3537 co-relation queries the response was YES. [2024-05-12 13:37:16,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17175 conditions, 6932 events. 4383/6932 cut-off events. For 3505/3537 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42396 event pairs, 2361 based on Foata normal form. 16/6435 useless extension candidates. Maximal degree in co-relation 17157. Up to 6062 conditions per place. [2024-05-12 13:37:16,876 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 82 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-05-12 13:37:16,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 116 transitions, 653 flow [2024-05-12 13:37:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:37:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:37:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-05-12 13:37:16,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-05-12 13:37:16,878 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 219 flow. Second operand 5 states and 150 transitions. [2024-05-12 13:37:16,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 116 transitions, 653 flow [2024-05-12 13:37:16,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 116 transitions, 641 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:37:16,888 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 458 flow [2024-05-12 13:37:16,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2024-05-12 13:37:16,889 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-05-12 13:37:16,889 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 458 flow [2024-05-12 13:37:16,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:16,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:16,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:16,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:37:16,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:16,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash 530474420, now seen corresponding path program 1 times [2024-05-12 13:37:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991096173] [2024-05-12 13:37:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991096173] [2024-05-12 13:37:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991096173] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:37:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343905631] [2024-05-12 13:37:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:37:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:37:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:37:17,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-05-12 13:37:17,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:17,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-05-12 13:37:17,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:17,467 INFO L124 PetriNetUnfolderBase]: 1542/2956 cut-off events. [2024-05-12 13:37:17,467 INFO L125 PetriNetUnfolderBase]: For 2140/2356 co-relation queries the response was YES. [2024-05-12 13:37:17,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 2956 events. 1542/2956 cut-off events. For 2140/2356 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21186 event pairs, 691 based on Foata normal form. 48/2760 useless extension candidates. Maximal degree in co-relation 7033. Up to 1903 conditions per place. [2024-05-12 13:37:17,495 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-05-12 13:37:17,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 503 flow [2024-05-12 13:37:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:37:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:37:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-05-12 13:37:17,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7304964539007093 [2024-05-12 13:37:17,499 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 458 flow. Second operand 3 states and 103 transitions. [2024-05-12 13:37:17,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 503 flow [2024-05-12 13:37:17,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 493 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-05-12 13:37:17,505 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 389 flow [2024-05-12 13:37:17,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2024-05-12 13:37:17,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-05-12 13:37:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 389 flow [2024-05-12 13:37:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:17,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:37:17,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:17,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -935384188, now seen corresponding path program 1 times [2024-05-12 13:37:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982379454] [2024-05-12 13:37:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:18,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982379454] [2024-05-12 13:37:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982379454] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:18,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:18,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:37:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158781344] [2024-05-12 13:37:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:18,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:37:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:37:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:37:18,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:37:18,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 389 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) [2024-05-12 13:37:18,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:18,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:37:18,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:19,871 INFO L124 PetriNetUnfolderBase]: 3828/6077 cut-off events. [2024-05-12 13:37:19,871 INFO L125 PetriNetUnfolderBase]: For 7033/7054 co-relation queries the response was YES. [2024-05-12 13:37:19,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16794 conditions, 6077 events. 3828/6077 cut-off events. For 7033/7054 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 36477 event pairs, 1495 based on Foata normal form. 27/5915 useless extension candidates. Maximal degree in co-relation 16769. Up to 5123 conditions per place. [2024-05-12 13:37:19,905 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 88 selfloop transitions, 23 changer transitions 1/121 dead transitions. [2024-05-12 13:37:19,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 752 flow [2024-05-12 13:37:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-05-12 13:37:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-05-12 13:37:19,908 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 389 flow. Second operand 6 states and 172 transitions. [2024-05-12 13:37:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 752 flow [2024-05-12 13:37:19,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 121 transitions, 730 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:19,917 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 440 flow [2024-05-12 13:37:19,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-05-12 13:37:19,918 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-05-12 13:37:19,919 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 440 flow [2024-05-12 13:37:19,919 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) [2024-05-12 13:37:19,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:19,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:37:19,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:19,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1315213767, now seen corresponding path program 1 times [2024-05-12 13:37:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307205883] [2024-05-12 13:37:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:20,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307205883] [2024-05-12 13:37:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307205883] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:20,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:37:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872591632] [2024-05-12 13:37:20,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:37:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:37:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:37:20,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:20,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:20,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:20,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:21,533 INFO L124 PetriNetUnfolderBase]: 3871/6128 cut-off events. [2024-05-12 13:37:21,533 INFO L125 PetriNetUnfolderBase]: For 8451/8472 co-relation queries the response was YES. [2024-05-12 13:37:21,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17901 conditions, 6128 events. 3871/6128 cut-off events. For 8451/8472 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36223 event pairs, 1984 based on Foata normal form. 11/5954 useless extension candidates. Maximal degree in co-relation 17875. Up to 5549 conditions per place. [2024-05-12 13:37:21,575 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 81 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-05-12 13:37:21,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 716 flow [2024-05-12 13:37:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:37:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:37:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:37:21,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:37:21,577 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 440 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:37:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 716 flow [2024-05-12 13:37:21,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 663 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:37:21,584 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 482 flow [2024-05-12 13:37:21,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2024-05-12 13:37:21,585 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:37:21,586 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 482 flow [2024-05-12 13:37:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:21,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:21,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:21,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:37:21,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:21,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2116920034, now seen corresponding path program 1 times [2024-05-12 13:37:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801880978] [2024-05-12 13:37:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:22,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801880978] [2024-05-12 13:37:22,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801880978] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:22,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:37:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641226300] [2024-05-12 13:37:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:22,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:37:22,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:37:22,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:37:22,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:22,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:22,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:22,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:23,420 INFO L124 PetriNetUnfolderBase]: 4594/7240 cut-off events. [2024-05-12 13:37:23,421 INFO L125 PetriNetUnfolderBase]: For 11506/11506 co-relation queries the response was YES. [2024-05-12 13:37:23,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21540 conditions, 7240 events. 4594/7240 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 43313 event pairs, 2384 based on Foata normal form. 2/7023 useless extension candidates. Maximal degree in co-relation 21511. Up to 6538 conditions per place. [2024-05-12 13:37:23,476 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 98 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2024-05-12 13:37:23,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 840 flow [2024-05-12 13:37:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-05-12 13:37:23,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:37:23,478 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 482 flow. Second operand 6 states and 132 transitions. [2024-05-12 13:37:23,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 840 flow [2024-05-12 13:37:23,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 813 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:23,488 INFO L231 Difference]: Finished difference. Result has 75 places, 90 transitions, 576 flow [2024-05-12 13:37:23,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=576, PETRI_PLACES=75, PETRI_TRANSITIONS=90} [2024-05-12 13:37:23,489 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-05-12 13:37:23,489 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 90 transitions, 576 flow [2024-05-12 13:37:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:23,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:23,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:37:23,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:23,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2119507134, now seen corresponding path program 1 times [2024-05-12 13:37:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:23,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015208228] [2024-05-12 13:37:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:24,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015208228] [2024-05-12 13:37:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015208228] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:24,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:37:24,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136501651] [2024-05-12 13:37:24,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:24,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:37:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:37:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:37:24,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:24,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 90 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:24,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:24,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:24,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:25,368 INFO L124 PetriNetUnfolderBase]: 4488/7111 cut-off events. [2024-05-12 13:37:25,368 INFO L125 PetriNetUnfolderBase]: For 16531/16637 co-relation queries the response was YES. [2024-05-12 13:37:25,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23004 conditions, 7111 events. 4488/7111 cut-off events. For 16531/16637 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 43022 event pairs, 2106 based on Foata normal form. 39/6910 useless extension candidates. Maximal degree in co-relation 22971. Up to 6332 conditions per place. [2024-05-12 13:37:25,410 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 100 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-05-12 13:37:25,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 133 transitions, 998 flow [2024-05-12 13:37:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-05-12 13:37:25,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:37:25,413 INFO L175 Difference]: Start difference. First operand has 75 places, 90 transitions, 576 flow. Second operand 6 states and 144 transitions. [2024-05-12 13:37:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 133 transitions, 998 flow [2024-05-12 13:37:25,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 133 transitions, 990 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:25,424 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 762 flow [2024-05-12 13:37:25,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2024-05-12 13:37:25,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-05-12 13:37:25,425 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 762 flow [2024-05-12 13:37:25,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:25,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:25,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:25,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:37:25,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:25,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1497313208, now seen corresponding path program 2 times [2024-05-12 13:37:25,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:25,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260207858] [2024-05-12 13:37:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:25,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260207858] [2024-05-12 13:37:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260207858] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:37:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426133717] [2024-05-12 13:37:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:37:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:37:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:37:26,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:26,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 762 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:26,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:26,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:26,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:27,192 INFO L124 PetriNetUnfolderBase]: 4678/7386 cut-off events. [2024-05-12 13:37:27,192 INFO L125 PetriNetUnfolderBase]: For 23615/23704 co-relation queries the response was YES. [2024-05-12 13:37:27,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27041 conditions, 7386 events. 4678/7386 cut-off events. For 23615/23704 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44777 event pairs, 1994 based on Foata normal form. 25/7168 useless extension candidates. Maximal degree in co-relation 27003. Up to 6414 conditions per place. [2024-05-12 13:37:27,244 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 103 selfloop transitions, 29 changer transitions 0/143 dead transitions. [2024-05-12 13:37:27,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 143 transitions, 1216 flow [2024-05-12 13:37:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-05-12 13:37:27,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:37:27,247 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 762 flow. Second operand 6 states and 146 transitions. [2024-05-12 13:37:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 143 transitions, 1216 flow [2024-05-12 13:37:27,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 143 transitions, 1182 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:27,267 INFO L231 Difference]: Finished difference. Result has 87 places, 112 transitions, 887 flow [2024-05-12 13:37:27,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=887, PETRI_PLACES=87, PETRI_TRANSITIONS=112} [2024-05-12 13:37:27,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-05-12 13:37:27,268 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 112 transitions, 887 flow [2024-05-12 13:37:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:27,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:27,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:37:27,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:27,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2125259742, now seen corresponding path program 1 times [2024-05-12 13:37:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674518719] [2024-05-12 13:37:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:28,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:28,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674518719] [2024-05-12 13:37:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674518719] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:28,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487717575] [2024-05-12 13:37:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:28,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:28,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 112 transitions, 887 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:28,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:28,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:28,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:29,624 INFO L124 PetriNetUnfolderBase]: 4801/7558 cut-off events. [2024-05-12 13:37:29,624 INFO L125 PetriNetUnfolderBase]: For 27277/27277 co-relation queries the response was YES. [2024-05-12 13:37:29,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28402 conditions, 7558 events. 4801/7558 cut-off events. For 27277/27277 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 45286 event pairs, 2246 based on Foata normal form. 2/7329 useless extension candidates. Maximal degree in co-relation 28361. Up to 6802 conditions per place. [2024-05-12 13:37:29,672 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 128 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-05-12 13:37:29,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1305 flow [2024-05-12 13:37:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:37:29,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:37:29,674 INFO L175 Difference]: Start difference. First operand has 87 places, 112 transitions, 887 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:37:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1305 flow [2024-05-12 13:37:29,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 1262 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:29,701 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 917 flow [2024-05-12 13:37:29,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=917, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-05-12 13:37:29,704 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-05-12 13:37:29,704 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 917 flow [2024-05-12 13:37:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:29,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:29,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:29,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:37:29,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:29,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1280091676, now seen corresponding path program 1 times [2024-05-12 13:37:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:29,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701811908] [2024-05-12 13:37:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:29,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701811908] [2024-05-12 13:37:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701811908] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481656290] [2024-05-12 13:37:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:30,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:30,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:30,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 917 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:30,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:30,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:31,645 INFO L124 PetriNetUnfolderBase]: 4717/7387 cut-off events. [2024-05-12 13:37:31,645 INFO L125 PetriNetUnfolderBase]: For 35437/35598 co-relation queries the response was YES. [2024-05-12 13:37:31,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30061 conditions, 7387 events. 4717/7387 cut-off events. For 35437/35598 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44441 event pairs, 1713 based on Foata normal form. 71/7100 useless extension candidates. Maximal degree in co-relation 30018. Up to 6311 conditions per place. [2024-05-12 13:37:31,707 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 119 selfloop transitions, 42 changer transitions 0/173 dead transitions. [2024-05-12 13:37:31,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 173 transitions, 1485 flow [2024-05-12 13:37:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-05-12 13:37:31,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-05-12 13:37:31,709 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 917 flow. Second operand 7 states and 179 transitions. [2024-05-12 13:37:31,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 173 transitions, 1485 flow [2024-05-12 13:37:31,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 173 transitions, 1442 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:31,742 INFO L231 Difference]: Finished difference. Result has 95 places, 128 transitions, 1078 flow [2024-05-12 13:37:31,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1078, PETRI_PLACES=95, PETRI_TRANSITIONS=128} [2024-05-12 13:37:31,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-05-12 13:37:31,743 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 128 transitions, 1078 flow [2024-05-12 13:37:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:31,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:31,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:37:31,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:31,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1802297239, now seen corresponding path program 1 times [2024-05-12 13:37:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:31,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202717035] [2024-05-12 13:37:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202717035] [2024-05-12 13:37:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202717035] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:32,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:32,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725530184] [2024-05-12 13:37:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 128 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:32,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:33,679 INFO L124 PetriNetUnfolderBase]: 4993/7825 cut-off events. [2024-05-12 13:37:33,679 INFO L125 PetriNetUnfolderBase]: For 39114/39114 co-relation queries the response was YES. [2024-05-12 13:37:33,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33529 conditions, 7825 events. 4993/7825 cut-off events. For 39114/39114 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 46783 event pairs, 1888 based on Foata normal form. 2/7594 useless extension candidates. Maximal degree in co-relation 33484. Up to 7062 conditions per place. [2024-05-12 13:37:33,734 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 151 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-05-12 13:37:33,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 174 transitions, 1608 flow [2024-05-12 13:37:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:37:33,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-05-12 13:37:33,738 INFO L175 Difference]: Start difference. First operand has 95 places, 128 transitions, 1078 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:37:33,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 174 transitions, 1608 flow [2024-05-12 13:37:33,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 1515 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:33,776 INFO L231 Difference]: Finished difference. Result has 101 places, 138 transitions, 1130 flow [2024-05-12 13:37:33,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1130, PETRI_PLACES=101, PETRI_TRANSITIONS=138} [2024-05-12 13:37:33,779 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-05-12 13:37:33,779 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 138 transitions, 1130 flow [2024-05-12 13:37:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:33,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:33,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:33,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:37:33,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:33,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1802297456, now seen corresponding path program 2 times [2024-05-12 13:37:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:33,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754276972] [2024-05-12 13:37:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:34,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:34,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754276972] [2024-05-12 13:37:34,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754276972] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:34,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:34,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673808927] [2024-05-12 13:37:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:34,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:34,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 138 transitions, 1130 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:34,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:34,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:34,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:35,985 INFO L124 PetriNetUnfolderBase]: 4994/7792 cut-off events. [2024-05-12 13:37:35,986 INFO L125 PetriNetUnfolderBase]: For 50448/50629 co-relation queries the response was YES. [2024-05-12 13:37:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35413 conditions, 7792 events. 4994/7792 cut-off events. For 50448/50629 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 46987 event pairs, 1629 based on Foata normal form. 64/7485 useless extension candidates. Maximal degree in co-relation 35365. Up to 6451 conditions per place. [2024-05-12 13:37:36,042 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 132 selfloop transitions, 55 changer transitions 0/202 dead transitions. [2024-05-12 13:37:36,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 202 transitions, 1925 flow [2024-05-12 13:37:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:37:36,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-05-12 13:37:36,044 INFO L175 Difference]: Start difference. First operand has 101 places, 138 transitions, 1130 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:37:36,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 202 transitions, 1925 flow [2024-05-12 13:37:36,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 202 transitions, 1902 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:36,100 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 1451 flow [2024-05-12 13:37:36,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1451, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2024-05-12 13:37:36,101 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2024-05-12 13:37:36,101 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 1451 flow [2024-05-12 13:37:36,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:36,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:36,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:36,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:37:36,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:36,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1458266656, now seen corresponding path program 3 times [2024-05-12 13:37:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:36,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100930709] [2024-05-12 13:37:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:36,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:37,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:37,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100930709] [2024-05-12 13:37:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100930709] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:37,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146188504] [2024-05-12 13:37:37,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:37,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:37,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 1451 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:37,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:37,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:37,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:38,162 INFO L124 PetriNetUnfolderBase]: 5133/7867 cut-off events. [2024-05-12 13:37:38,163 INFO L125 PetriNetUnfolderBase]: For 63774/63905 co-relation queries the response was YES. [2024-05-12 13:37:38,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39174 conditions, 7867 events. 5133/7867 cut-off events. For 63774/63905 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 46556 event pairs, 1562 based on Foata normal form. 47/7598 useless extension candidates. Maximal degree in co-relation 39123. Up to 6186 conditions per place. [2024-05-12 13:37:38,225 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 149 selfloop transitions, 65 changer transitions 0/229 dead transitions. [2024-05-12 13:37:38,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 229 transitions, 2481 flow [2024-05-12 13:37:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:37:38,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-05-12 13:37:38,227 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 1451 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:37:38,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 229 transitions, 2481 flow [2024-05-12 13:37:38,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 229 transitions, 2382 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:38,294 INFO L231 Difference]: Finished difference. Result has 113 places, 181 transitions, 1877 flow [2024-05-12 13:37:38,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1877, PETRI_PLACES=113, PETRI_TRANSITIONS=181} [2024-05-12 13:37:38,295 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-05-12 13:37:38,295 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 181 transitions, 1877 flow [2024-05-12 13:37:38,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:38,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:38,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:38,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:37:38,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:38,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1458266873, now seen corresponding path program 2 times [2024-05-12 13:37:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036280165] [2024-05-12 13:37:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036280165] [2024-05-12 13:37:39,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036280165] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:39,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:39,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828213912] [2024-05-12 13:37:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:39,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:39,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:39,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 181 transitions, 1877 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:39,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:39,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:39,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:40,423 INFO L124 PetriNetUnfolderBase]: 5374/8274 cut-off events. [2024-05-12 13:37:40,424 INFO L125 PetriNetUnfolderBase]: For 70845/70862 co-relation queries the response was YES. [2024-05-12 13:37:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42809 conditions, 8274 events. 5374/8274 cut-off events. For 70845/70862 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 48809 event pairs, 1790 based on Foata normal form. 14/8077 useless extension candidates. Maximal degree in co-relation 42754. Up to 7483 conditions per place. [2024-05-12 13:37:40,481 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 194 selfloop transitions, 31 changer transitions 0/232 dead transitions. [2024-05-12 13:37:40,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 232 transitions, 2656 flow [2024-05-12 13:37:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:37:40,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-05-12 13:37:40,483 INFO L175 Difference]: Start difference. First operand has 113 places, 181 transitions, 1877 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:37:40,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 232 transitions, 2656 flow [2024-05-12 13:37:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 232 transitions, 2539 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:40,539 INFO L231 Difference]: Finished difference. Result has 119 places, 191 transitions, 1948 flow [2024-05-12 13:37:40,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1948, PETRI_PLACES=119, PETRI_TRANSITIONS=191} [2024-05-12 13:37:40,540 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-05-12 13:37:40,540 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 191 transitions, 1948 flow [2024-05-12 13:37:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:40,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:40,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:37:40,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:40,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:40,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1458533783, now seen corresponding path program 3 times [2024-05-12 13:37:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729945284] [2024-05-12 13:37:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729945284] [2024-05-12 13:37:41,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729945284] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:41,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151557213] [2024-05-12 13:37:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:41,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:41,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:41,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:41,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:41,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 191 transitions, 1948 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:41,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:41,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:41,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:42,673 INFO L124 PetriNetUnfolderBase]: 5369/8258 cut-off events. [2024-05-12 13:37:42,673 INFO L125 PetriNetUnfolderBase]: For 73513/73530 co-relation queries the response was YES. [2024-05-12 13:37:42,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 8258 events. 5369/8258 cut-off events. For 73513/73530 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 48628 event pairs, 1791 based on Foata normal form. 14/8064 useless extension candidates. Maximal degree in co-relation 43396. Up to 7478 conditions per place. [2024-05-12 13:37:42,733 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 34 changer transitions 0/230 dead transitions. [2024-05-12 13:37:42,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 230 transitions, 2571 flow [2024-05-12 13:37:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:37:42,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-05-12 13:37:42,734 INFO L175 Difference]: Start difference. First operand has 119 places, 191 transitions, 1948 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:37:42,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 230 transitions, 2571 flow [2024-05-12 13:37:42,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 230 transitions, 2476 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:42,818 INFO L231 Difference]: Finished difference. Result has 121 places, 192 transitions, 1940 flow [2024-05-12 13:37:42,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1940, PETRI_PLACES=121, PETRI_TRANSITIONS=192} [2024-05-12 13:37:42,819 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-05-12 13:37:42,819 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 192 transitions, 1940 flow [2024-05-12 13:37:42,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:42,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:42,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:37:42,820 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:42,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1458543703, now seen corresponding path program 1 times [2024-05-12 13:37:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390119604] [2024-05-12 13:37:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390119604] [2024-05-12 13:37:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390119604] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:43,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804017698] [2024-05-12 13:37:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:43,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:43,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:44,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:44,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 192 transitions, 1940 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:44,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:44,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:44,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:45,211 INFO L124 PetriNetUnfolderBase]: 5361/8279 cut-off events. [2024-05-12 13:37:45,211 INFO L125 PetriNetUnfolderBase]: For 73790/73790 co-relation queries the response was YES. [2024-05-12 13:37:45,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42953 conditions, 8279 events. 5361/8279 cut-off events. For 73790/73790 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48901 event pairs, 1804 based on Foata normal form. 4/8064 useless extension candidates. Maximal degree in co-relation 42895. Up to 7533 conditions per place. [2024-05-12 13:37:45,288 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 215 selfloop transitions, 34 changer transitions 0/256 dead transitions. [2024-05-12 13:37:45,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 256 transitions, 2815 flow [2024-05-12 13:37:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-05-12 13:37:45,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-05-12 13:37:45,290 INFO L175 Difference]: Start difference. First operand has 121 places, 192 transitions, 1940 flow. Second operand 8 states and 173 transitions. [2024-05-12 13:37:45,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 256 transitions, 2815 flow [2024-05-12 13:37:45,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 256 transitions, 2756 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:37:45,366 INFO L231 Difference]: Finished difference. Result has 129 places, 218 transitions, 2287 flow [2024-05-12 13:37:45,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2287, PETRI_PLACES=129, PETRI_TRANSITIONS=218} [2024-05-12 13:37:45,366 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-05-12 13:37:45,367 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 218 transitions, 2287 flow [2024-05-12 13:37:45,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:45,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:45,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:45,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:37:45,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:45,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1028046045, now seen corresponding path program 1 times [2024-05-12 13:37:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:45,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472349370] [2024-05-12 13:37:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:45,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:46,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:46,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472349370] [2024-05-12 13:37:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472349370] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:46,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:46,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:46,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47425253] [2024-05-12 13:37:46,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:46,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:46,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:46,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 218 transitions, 2287 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:46,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:46,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:46,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:47,726 INFO L124 PetriNetUnfolderBase]: 5156/7964 cut-off events. [2024-05-12 13:37:47,727 INFO L125 PetriNetUnfolderBase]: For 86618/86803 co-relation queries the response was YES. [2024-05-12 13:37:47,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44072 conditions, 7964 events. 5156/7964 cut-off events. For 86618/86803 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 47273 event pairs, 1682 based on Foata normal form. 84/7722 useless extension candidates. Maximal degree in co-relation 44009. Up to 6801 conditions per place. [2024-05-12 13:37:47,915 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 191 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-05-12 13:37:47,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 275 transitions, 3116 flow [2024-05-12 13:37:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:37:47,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-05-12 13:37:47,917 INFO L175 Difference]: Start difference. First operand has 129 places, 218 transitions, 2287 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:37:47,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 275 transitions, 3116 flow [2024-05-12 13:37:47,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 275 transitions, 3008 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:47,990 INFO L231 Difference]: Finished difference. Result has 136 places, 230 transitions, 2479 flow [2024-05-12 13:37:47,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2479, PETRI_PLACES=136, PETRI_TRANSITIONS=230} [2024-05-12 13:37:47,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-05-12 13:37:47,991 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 230 transitions, 2479 flow [2024-05-12 13:37:47,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:47,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:47,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:47,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:37:47,992 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:47,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash -36818189, now seen corresponding path program 1 times [2024-05-12 13:37:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163282504] [2024-05-12 13:37:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:48,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:48,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163282504] [2024-05-12 13:37:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163282504] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:48,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:48,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:48,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954650129] [2024-05-12 13:37:48,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:48,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:48,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:48,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:48,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:48,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 230 transitions, 2479 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:48,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:48,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:48,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:50,152 INFO L124 PetriNetUnfolderBase]: 5446/8401 cut-off events. [2024-05-12 13:37:50,152 INFO L125 PetriNetUnfolderBase]: For 89397/89397 co-relation queries the response was YES. [2024-05-12 13:37:50,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46764 conditions, 8401 events. 5446/8401 cut-off events. For 89397/89397 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 49533 event pairs, 1764 based on Foata normal form. 4/8184 useless extension candidates. Maximal degree in co-relation 46697. Up to 7595 conditions per place. [2024-05-12 13:37:50,219 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 256 selfloop transitions, 35 changer transitions 0/298 dead transitions. [2024-05-12 13:37:50,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 298 transitions, 3471 flow [2024-05-12 13:37:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:37:50,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-05-12 13:37:50,221 INFO L175 Difference]: Start difference. First operand has 136 places, 230 transitions, 2479 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:37:50,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 298 transitions, 3471 flow [2024-05-12 13:37:50,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 298 transitions, 3355 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:50,316 INFO L231 Difference]: Finished difference. Result has 144 places, 253 transitions, 2784 flow [2024-05-12 13:37:50,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2784, PETRI_PLACES=144, PETRI_TRANSITIONS=253} [2024-05-12 13:37:50,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 91 predicate places. [2024-05-12 13:37:50,317 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 253 transitions, 2784 flow [2024-05-12 13:37:50,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:50,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:50,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:50,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:37:50,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:50,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:50,318 INFO L85 PathProgramCache]: Analyzing trace with hash -36638451, now seen corresponding path program 1 times [2024-05-12 13:37:50,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:50,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037130144] [2024-05-12 13:37:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:50,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037130144] [2024-05-12 13:37:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037130144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:51,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:51,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538175753] [2024-05-12 13:37:51,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:51,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:51,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:51,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 253 transitions, 2784 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:51,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:51,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:51,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:53,036 INFO L124 PetriNetUnfolderBase]: 5472/8425 cut-off events. [2024-05-12 13:37:53,036 INFO L125 PetriNetUnfolderBase]: For 97425/97425 co-relation queries the response was YES. [2024-05-12 13:37:53,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48101 conditions, 8425 events. 5472/8425 cut-off events. For 97425/97425 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 49535 event pairs, 1742 based on Foata normal form. 2/8210 useless extension candidates. Maximal degree in co-relation 48030. Up to 7692 conditions per place. [2024-05-12 13:37:53,119 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 272 selfloop transitions, 22 changer transitions 0/301 dead transitions. [2024-05-12 13:37:53,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 301 transitions, 3584 flow [2024-05-12 13:37:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-05-12 13:37:53,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-05-12 13:37:53,121 INFO L175 Difference]: Start difference. First operand has 144 places, 253 transitions, 2784 flow. Second operand 8 states and 177 transitions. [2024-05-12 13:37:53,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 301 transitions, 3584 flow [2024-05-12 13:37:53,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 301 transitions, 3520 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:53,276 INFO L231 Difference]: Finished difference. Result has 150 places, 257 transitions, 2831 flow [2024-05-12 13:37:53,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2831, PETRI_PLACES=150, PETRI_TRANSITIONS=257} [2024-05-12 13:37:53,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-05-12 13:37:53,277 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 257 transitions, 2831 flow [2024-05-12 13:37:53,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:53,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:53,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:53,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:37:53,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:53,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1031891781, now seen corresponding path program 2 times [2024-05-12 13:37:53,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:53,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544864632] [2024-05-12 13:37:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:54,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:54,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544864632] [2024-05-12 13:37:54,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544864632] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:54,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:54,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:54,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347851465] [2024-05-12 13:37:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:54,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:54,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:54,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 257 transitions, 2831 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:54,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:54,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:54,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:55,455 INFO L124 PetriNetUnfolderBase]: 5666/8657 cut-off events. [2024-05-12 13:37:55,455 INFO L125 PetriNetUnfolderBase]: For 109454/109454 co-relation queries the response was YES. [2024-05-12 13:37:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50793 conditions, 8657 events. 5666/8657 cut-off events. For 109454/109454 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50502 event pairs, 1599 based on Foata normal form. 8/8460 useless extension candidates. Maximal degree in co-relation 50720. Up to 7607 conditions per place. [2024-05-12 13:37:55,531 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 267 selfloop transitions, 58 changer transitions 0/332 dead transitions. [2024-05-12 13:37:55,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 332 transitions, 4061 flow [2024-05-12 13:37:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-05-12 13:37:55,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-05-12 13:37:55,533 INFO L175 Difference]: Start difference. First operand has 150 places, 257 transitions, 2831 flow. Second operand 8 states and 187 transitions. [2024-05-12 13:37:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 332 transitions, 4061 flow [2024-05-12 13:37:55,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 332 transitions, 3947 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:55,660 INFO L231 Difference]: Finished difference. Result has 155 places, 283 transitions, 3252 flow [2024-05-12 13:37:55,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3252, PETRI_PLACES=155, PETRI_TRANSITIONS=283} [2024-05-12 13:37:55,661 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-05-12 13:37:55,661 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 283 transitions, 3252 flow [2024-05-12 13:37:55,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:55,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:37:55,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:55,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash -36645209, now seen corresponding path program 3 times [2024-05-12 13:37:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:55,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620497652] [2024-05-12 13:37:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:56,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:56,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620497652] [2024-05-12 13:37:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620497652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:56,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:56,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633131283] [2024-05-12 13:37:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:56,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:56,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:56,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 283 transitions, 3252 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:56,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:56,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:56,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:57,986 INFO L124 PetriNetUnfolderBase]: 5685/8683 cut-off events. [2024-05-12 13:37:57,986 INFO L125 PetriNetUnfolderBase]: For 122701/122701 co-relation queries the response was YES. [2024-05-12 13:37:58,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53362 conditions, 8683 events. 5685/8683 cut-off events. For 122701/122701 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50663 event pairs, 1651 based on Foata normal form. 4/8482 useless extension candidates. Maximal degree in co-relation 53286. Up to 7622 conditions per place. [2024-05-12 13:37:58,066 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 269 selfloop transitions, 61 changer transitions 0/337 dead transitions. [2024-05-12 13:37:58,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 337 transitions, 4256 flow [2024-05-12 13:37:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:37:58,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:37:58,068 INFO L175 Difference]: Start difference. First operand has 155 places, 283 transitions, 3252 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:37:58,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 337 transitions, 4256 flow [2024-05-12 13:37:58,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 337 transitions, 4108 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:58,242 INFO L231 Difference]: Finished difference. Result has 161 places, 289 transitions, 3365 flow [2024-05-12 13:37:58,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3365, PETRI_PLACES=161, PETRI_TRANSITIONS=289} [2024-05-12 13:37:58,242 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-05-12 13:37:58,242 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 289 transitions, 3365 flow [2024-05-12 13:37:58,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:58,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:58,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:58,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:37:58,243 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:58,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2029795203, now seen corresponding path program 2 times [2024-05-12 13:37:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85781817] [2024-05-12 13:37:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:59,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85781817] [2024-05-12 13:37:59,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85781817] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:59,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827991227] [2024-05-12 13:37:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:59,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:59,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:59,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 289 transitions, 3365 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:59,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:59,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:59,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:00,672 INFO L124 PetriNetUnfolderBase]: 5758/8803 cut-off events. [2024-05-12 13:38:00,672 INFO L125 PetriNetUnfolderBase]: For 129178/129210 co-relation queries the response was YES. [2024-05-12 13:38:00,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54398 conditions, 8803 events. 5758/8803 cut-off events. For 129178/129210 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 51433 event pairs, 1467 based on Foata normal form. 13/8606 useless extension candidates. Maximal degree in co-relation 54319. Up to 7477 conditions per place. [2024-05-12 13:38:00,757 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 257 selfloop transitions, 107 changer transitions 0/371 dead transitions. [2024-05-12 13:38:00,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 371 transitions, 4848 flow [2024-05-12 13:38:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:38:00,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:38:00,759 INFO L175 Difference]: Start difference. First operand has 161 places, 289 transitions, 3365 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:38:00,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 371 transitions, 4848 flow [2024-05-12 13:38:00,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 371 transitions, 4727 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-05-12 13:38:00,930 INFO L231 Difference]: Finished difference. Result has 168 places, 321 transitions, 4006 flow [2024-05-12 13:38:00,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4006, PETRI_PLACES=168, PETRI_TRANSITIONS=321} [2024-05-12 13:38:00,931 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-05-12 13:38:00,931 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 321 transitions, 4006 flow [2024-05-12 13:38:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:00,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:00,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:00,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:38:00,932 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:00,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2135836993, now seen corresponding path program 4 times [2024-05-12 13:38:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:00,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033058839] [2024-05-12 13:38:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033058839] [2024-05-12 13:38:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033058839] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:01,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:01,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:01,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110149501] [2024-05-12 13:38:01,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:01,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:01,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:01,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:01,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:01,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 321 transitions, 4006 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:01,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:01,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:01,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:03,231 INFO L124 PetriNetUnfolderBase]: 5929/9047 cut-off events. [2024-05-12 13:38:03,232 INFO L125 PetriNetUnfolderBase]: For 152308/152340 co-relation queries the response was YES. [2024-05-12 13:38:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59037 conditions, 9047 events. 5929/9047 cut-off events. For 152308/152340 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52811 event pairs, 1475 based on Foata normal form. 19/8854 useless extension candidates. Maximal degree in co-relation 58954. Up to 7527 conditions per place. [2024-05-12 13:38:03,319 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 264 selfloop transitions, 122 changer transitions 0/393 dead transitions. [2024-05-12 13:38:03,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 393 transitions, 5549 flow [2024-05-12 13:38:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:38:03,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:38:03,321 INFO L175 Difference]: Start difference. First operand has 168 places, 321 transitions, 4006 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:38:03,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 393 transitions, 5549 flow [2024-05-12 13:38:03,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 393 transitions, 5375 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-05-12 13:38:03,555 INFO L231 Difference]: Finished difference. Result has 175 places, 342 transitions, 4500 flow [2024-05-12 13:38:03,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4500, PETRI_PLACES=175, PETRI_TRANSITIONS=342} [2024-05-12 13:38:03,556 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-05-12 13:38:03,556 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 342 transitions, 4500 flow [2024-05-12 13:38:03,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:03,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:03,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:03,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:38:03,557 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:03,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2030091873, now seen corresponding path program 3 times [2024-05-12 13:38:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:03,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119099583] [2024-05-12 13:38:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:04,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119099583] [2024-05-12 13:38:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119099583] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:04,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53246175] [2024-05-12 13:38:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:04,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:04,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:04,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 342 transitions, 4500 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:04,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:04,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:04,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:06,166 INFO L124 PetriNetUnfolderBase]: 5908/9016 cut-off events. [2024-05-12 13:38:06,166 INFO L125 PetriNetUnfolderBase]: For 163719/163751 co-relation queries the response was YES. [2024-05-12 13:38:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60571 conditions, 9016 events. 5908/9016 cut-off events. For 163719/163751 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 52754 event pairs, 1475 based on Foata normal form. 17/8821 useless extension candidates. Maximal degree in co-relation 60485. Up to 7816 conditions per place. [2024-05-12 13:38:06,248 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 289 selfloop transitions, 95 changer transitions 0/391 dead transitions. [2024-05-12 13:38:06,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 391 transitions, 5582 flow [2024-05-12 13:38:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:38:06,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:38:06,250 INFO L175 Difference]: Start difference. First operand has 175 places, 342 transitions, 4500 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:38:06,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 391 transitions, 5582 flow [2024-05-12 13:38:06,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 391 transitions, 5323 flow, removed 100 selfloop flow, removed 3 redundant places. [2024-05-12 13:38:06,515 INFO L231 Difference]: Finished difference. Result has 180 places, 343 transitions, 4465 flow [2024-05-12 13:38:06,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4241, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4465, PETRI_PLACES=180, PETRI_TRANSITIONS=343} [2024-05-12 13:38:06,515 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-05-12 13:38:06,515 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 343 transitions, 4465 flow [2024-05-12 13:38:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:06,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:38:06,516 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:06,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2038366331, now seen corresponding path program 5 times [2024-05-12 13:38:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:06,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693797499] [2024-05-12 13:38:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693797499] [2024-05-12 13:38:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693797499] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679778006] [2024-05-12 13:38:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:07,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:07,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 343 transitions, 4465 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:07,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:07,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:08,965 INFO L124 PetriNetUnfolderBase]: 5946/9070 cut-off events. [2024-05-12 13:38:08,965 INFO L125 PetriNetUnfolderBase]: For 158452/158484 co-relation queries the response was YES. [2024-05-12 13:38:09,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59414 conditions, 9070 events. 5946/9070 cut-off events. For 158452/158484 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52967 event pairs, 1493 based on Foata normal form. 19/8877 useless extension candidates. Maximal degree in co-relation 59326. Up to 7528 conditions per place. [2024-05-12 13:38:09,071 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 272 selfloop transitions, 119 changer transitions 0/398 dead transitions. [2024-05-12 13:38:09,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 398 transitions, 5748 flow [2024-05-12 13:38:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:38:09,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-05-12 13:38:09,074 INFO L175 Difference]: Start difference. First operand has 180 places, 343 transitions, 4465 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:38:09,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 398 transitions, 5748 flow [2024-05-12 13:38:09,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 398 transitions, 5540 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:09,313 INFO L231 Difference]: Finished difference. Result has 184 places, 349 transitions, 4645 flow [2024-05-12 13:38:09,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4645, PETRI_PLACES=184, PETRI_TRANSITIONS=349} [2024-05-12 13:38:09,314 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-05-12 13:38:09,314 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 349 transitions, 4645 flow [2024-05-12 13:38:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:09,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:09,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:09,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:38:09,314 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:09,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2038366083, now seen corresponding path program 4 times [2024-05-12 13:38:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:09,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735420459] [2024-05-12 13:38:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:09,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735420459] [2024-05-12 13:38:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735420459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:10,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076372834] [2024-05-12 13:38:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:10,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:10,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:10,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 349 transitions, 4645 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:10,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:10,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:10,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:11,870 INFO L124 PetriNetUnfolderBase]: 5931/9043 cut-off events. [2024-05-12 13:38:11,870 INFO L125 PetriNetUnfolderBase]: For 164770/164802 co-relation queries the response was YES. [2024-05-12 13:38:11,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59906 conditions, 9043 events. 5931/9043 cut-off events. For 164770/164802 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52863 event pairs, 1493 based on Foata normal form. 17/8850 useless extension candidates. Maximal degree in co-relation 59816. Up to 7805 conditions per place. [2024-05-12 13:38:11,954 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 296 selfloop transitions, 95 changer transitions 0/398 dead transitions. [2024-05-12 13:38:11,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 398 transitions, 5824 flow [2024-05-12 13:38:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:38:11,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:38:11,956 INFO L175 Difference]: Start difference. First operand has 184 places, 349 transitions, 4645 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:38:11,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 398 transitions, 5824 flow [2024-05-12 13:38:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 398 transitions, 5396 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:12,197 INFO L231 Difference]: Finished difference. Result has 186 places, 350 transitions, 4443 flow [2024-05-12 13:38:12,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4217, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4443, PETRI_PLACES=186, PETRI_TRANSITIONS=350} [2024-05-12 13:38:12,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-05-12 13:38:12,198 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 350 transitions, 4443 flow [2024-05-12 13:38:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:12,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:12,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:38:12,198 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:12,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2038372841, now seen corresponding path program 6 times [2024-05-12 13:38:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350092539] [2024-05-12 13:38:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:13,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350092539] [2024-05-12 13:38:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350092539] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:13,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:13,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312216964] [2024-05-12 13:38:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:13,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:13,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 350 transitions, 4443 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:13,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:13,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:13,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:14,523 INFO L124 PetriNetUnfolderBase]: 5915/9031 cut-off events. [2024-05-12 13:38:14,523 INFO L125 PetriNetUnfolderBase]: For 165390/165422 co-relation queries the response was YES. [2024-05-12 13:38:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58902 conditions, 9031 events. 5915/9031 cut-off events. For 165390/165422 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52808 event pairs, 1484 based on Foata normal form. 15/8832 useless extension candidates. Maximal degree in co-relation 58812. Up to 7505 conditions per place. [2024-05-12 13:38:14,804 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 265 selfloop transitions, 128 changer transitions 0/400 dead transitions. [2024-05-12 13:38:14,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 400 transitions, 5576 flow [2024-05-12 13:38:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:38:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:38:14,806 INFO L175 Difference]: Start difference. First operand has 186 places, 350 transitions, 4443 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:38:14,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 400 transitions, 5576 flow [2024-05-12 13:38:15,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 400 transitions, 5350 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-05-12 13:38:15,079 INFO L231 Difference]: Finished difference. Result has 191 places, 355 transitions, 4610 flow [2024-05-12 13:38:15,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4610, PETRI_PLACES=191, PETRI_TRANSITIONS=355} [2024-05-12 13:38:15,080 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-05-12 13:38:15,080 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 355 transitions, 4610 flow [2024-05-12 13:38:15,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:15,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:15,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:15,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:38:15,080 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:15,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2098649608, now seen corresponding path program 1 times [2024-05-12 13:38:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822937662] [2024-05-12 13:38:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822937662] [2024-05-12 13:38:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822937662] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:15,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:38:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363303349] [2024-05-12 13:38:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:38:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:38:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:38:15,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:15,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 355 transitions, 4610 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-05-12 13:38:15,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:15,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:15,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:17,278 INFO L124 PetriNetUnfolderBase]: 5851/8997 cut-off events. [2024-05-12 13:38:17,278 INFO L125 PetriNetUnfolderBase]: For 168649/168683 co-relation queries the response was YES. [2024-05-12 13:38:17,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58647 conditions, 8997 events. 5851/8997 cut-off events. For 168649/168683 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 53150 event pairs, 1653 based on Foata normal form. 28/8789 useless extension candidates. Maximal degree in co-relation 58555. Up to 8131 conditions per place. [2024-05-12 13:38:17,374 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 336 selfloop transitions, 34 changer transitions 0/377 dead transitions. [2024-05-12 13:38:17,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 377 transitions, 5467 flow [2024-05-12 13:38:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:38:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:38:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:38:17,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:38:17,375 INFO L175 Difference]: Start difference. First operand has 191 places, 355 transitions, 4610 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:38:17,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 377 transitions, 5467 flow [2024-05-12 13:38:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 377 transitions, 5269 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:38:17,657 INFO L231 Difference]: Finished difference. Result has 192 places, 355 transitions, 4499 flow [2024-05-12 13:38:17,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4499, PETRI_PLACES=192, PETRI_TRANSITIONS=355} [2024-05-12 13:38:17,658 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:38:17,658 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 355 transitions, 4499 flow [2024-05-12 13:38:17,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-05-12 13:38:17,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:17,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:17,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:38:17,659 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:17,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash -710357315, now seen corresponding path program 1 times [2024-05-12 13:38:17,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395631645] [2024-05-12 13:38:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:18,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395631645] [2024-05-12 13:38:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395631645] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917939245] [2024-05-12 13:38:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:18,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:38:18,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 355 transitions, 4499 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:18,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:18,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:38:18,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:20,496 INFO L124 PetriNetUnfolderBase]: 6187/9353 cut-off events. [2024-05-12 13:38:20,496 INFO L125 PetriNetUnfolderBase]: For 194527/194684 co-relation queries the response was YES. [2024-05-12 13:38:20,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63201 conditions, 9353 events. 6187/9353 cut-off events. For 194527/194684 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54573 event pairs, 1480 based on Foata normal form. 17/9002 useless extension candidates. Maximal degree in co-relation 63108. Up to 7815 conditions per place. [2024-05-12 13:38:20,603 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 325 selfloop transitions, 113 changer transitions 0/494 dead transitions. [2024-05-12 13:38:20,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 494 transitions, 6747 flow [2024-05-12 13:38:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-05-12 13:38:20,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 13:38:20,605 INFO L175 Difference]: Start difference. First operand has 192 places, 355 transitions, 4499 flow. Second operand 9 states and 235 transitions. [2024-05-12 13:38:20,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 494 transitions, 6747 flow [2024-05-12 13:38:20,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 494 transitions, 6671 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:38:20,981 INFO L231 Difference]: Finished difference. Result has 202 places, 417 transitions, 5733 flow [2024-05-12 13:38:20,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5733, PETRI_PLACES=202, PETRI_TRANSITIONS=417} [2024-05-12 13:38:20,982 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-05-12 13:38:20,982 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 417 transitions, 5733 flow [2024-05-12 13:38:20,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:20,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:20,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:20,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:38:20,983 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:20,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1804595867, now seen corresponding path program 2 times [2024-05-12 13:38:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:20,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666702775] [2024-05-12 13:38:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:21,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:21,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666702775] [2024-05-12 13:38:21,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666702775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34522496] [2024-05-12 13:38:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:22,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:38:22,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 417 transitions, 5733 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:22,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:22,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:38:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:23,965 INFO L124 PetriNetUnfolderBase]: 6461/9755 cut-off events. [2024-05-12 13:38:23,965 INFO L125 PetriNetUnfolderBase]: For 221018/221250 co-relation queries the response was YES. [2024-05-12 13:38:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69034 conditions, 9755 events. 6461/9755 cut-off events. For 221018/221250 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 57253 event pairs, 1123 based on Foata normal form. 66/9445 useless extension candidates. Maximal degree in co-relation 68936. Up to 7806 conditions per place. [2024-05-12 13:38:24,104 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 302 selfloop transitions, 128 changer transitions 0/486 dead transitions. [2024-05-12 13:38:24,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 486 transitions, 7086 flow [2024-05-12 13:38:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 13:38:24,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-05-12 13:38:24,106 INFO L175 Difference]: Start difference. First operand has 202 places, 417 transitions, 5733 flow. Second operand 8 states and 209 transitions. [2024-05-12 13:38:24,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 486 transitions, 7086 flow [2024-05-12 13:38:24,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 486 transitions, 6936 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-05-12 13:38:24,560 INFO L231 Difference]: Finished difference. Result has 208 places, 426 transitions, 6015 flow [2024-05-12 13:38:24,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5583, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6015, PETRI_PLACES=208, PETRI_TRANSITIONS=426} [2024-05-12 13:38:24,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-05-12 13:38:24,561 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 426 transitions, 6015 flow [2024-05-12 13:38:24,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:24,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:24,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:24,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:38:24,562 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:24,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1804657247, now seen corresponding path program 3 times [2024-05-12 13:38:24,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:24,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689075157] [2024-05-12 13:38:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689075157] [2024-05-12 13:38:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689075157] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:25,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:25,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738623476] [2024-05-12 13:38:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:25,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:38:25,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 426 transitions, 6015 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:25,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:25,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:38:25,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:27,689 INFO L124 PetriNetUnfolderBase]: 6639/10020 cut-off events. [2024-05-12 13:38:27,689 INFO L125 PetriNetUnfolderBase]: For 248384/248703 co-relation queries the response was YES. [2024-05-12 13:38:27,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73511 conditions, 10020 events. 6639/10020 cut-off events. For 248384/248703 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 59239 event pairs, 1476 based on Foata normal form. 54/9690 useless extension candidates. Maximal degree in co-relation 73411. Up to 8302 conditions per place. [2024-05-12 13:38:27,820 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 303 selfloop transitions, 129 changer transitions 0/488 dead transitions. [2024-05-12 13:38:27,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 488 transitions, 7346 flow [2024-05-12 13:38:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-05-12 13:38:27,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-05-12 13:38:27,821 INFO L175 Difference]: Start difference. First operand has 208 places, 426 transitions, 6015 flow. Second operand 8 states and 207 transitions. [2024-05-12 13:38:27,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 488 transitions, 7346 flow [2024-05-12 13:38:28,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 488 transitions, 7028 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:28,336 INFO L231 Difference]: Finished difference. Result has 211 places, 429 transitions, 6072 flow [2024-05-12 13:38:28,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5729, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6072, PETRI_PLACES=211, PETRI_TRANSITIONS=429} [2024-05-12 13:38:28,337 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-05-12 13:38:28,337 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 429 transitions, 6072 flow [2024-05-12 13:38:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:28,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:28,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:28,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:38:28,337 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:28,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1807338592, now seen corresponding path program 1 times [2024-05-12 13:38:28,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528739839] [2024-05-12 13:38:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528739839] [2024-05-12 13:38:29,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528739839] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:29,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:29,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:29,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928762523] [2024-05-12 13:38:29,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:29,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:29,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:29,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:29,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 429 transitions, 6072 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:29,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:29,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:29,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:31,459 INFO L124 PetriNetUnfolderBase]: 6951/10483 cut-off events. [2024-05-12 13:38:31,459 INFO L125 PetriNetUnfolderBase]: For 221650/221654 co-relation queries the response was YES. [2024-05-12 13:38:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73056 conditions, 10483 events. 6951/10483 cut-off events. For 221650/221654 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 61958 event pairs, 1708 based on Foata normal form. 6/10281 useless extension candidates. Maximal degree in co-relation 72955. Up to 9574 conditions per place. [2024-05-12 13:38:31,592 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 414 selfloop transitions, 62 changer transitions 0/483 dead transitions. [2024-05-12 13:38:31,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 483 transitions, 7334 flow [2024-05-12 13:38:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:38:31,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:38:31,594 INFO L175 Difference]: Start difference. First operand has 211 places, 429 transitions, 6072 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:38:31,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 483 transitions, 7334 flow [2024-05-12 13:38:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 483 transitions, 7083 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:32,103 INFO L231 Difference]: Finished difference. Result has 216 places, 437 transitions, 6138 flow [2024-05-12 13:38:32,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5837, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6138, PETRI_PLACES=216, PETRI_TRANSITIONS=437} [2024-05-12 13:38:32,103 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-05-12 13:38:32,103 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 437 transitions, 6138 flow [2024-05-12 13:38:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:32,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:32,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:38:32,104 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:32,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1252185269, now seen corresponding path program 1 times [2024-05-12 13:38:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295866783] [2024-05-12 13:38:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:33,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:33,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295866783] [2024-05-12 13:38:33,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295866783] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:33,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:33,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633066237] [2024-05-12 13:38:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:33,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:33,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:33,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:33,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 437 transitions, 6138 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:33,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:33,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:33,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:35,162 INFO L124 PetriNetUnfolderBase]: 6993/10541 cut-off events. [2024-05-12 13:38:35,163 INFO L125 PetriNetUnfolderBase]: For 227661/227669 co-relation queries the response was YES. [2024-05-12 13:38:35,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73125 conditions, 10541 events. 6993/10541 cut-off events. For 227661/227669 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 62296 event pairs, 1734 based on Foata normal form. 12/10345 useless extension candidates. Maximal degree in co-relation 73021. Up to 9639 conditions per place. [2024-05-12 13:38:35,304 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 431 selfloop transitions, 57 changer transitions 0/495 dead transitions. [2024-05-12 13:38:35,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 495 transitions, 7396 flow [2024-05-12 13:38:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-05-12 13:38:35,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846335697399527 [2024-05-12 13:38:35,306 INFO L175 Difference]: Start difference. First operand has 216 places, 437 transitions, 6138 flow. Second operand 9 states and 205 transitions. [2024-05-12 13:38:35,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 495 transitions, 7396 flow [2024-05-12 13:38:35,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 495 transitions, 7261 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:38:35,791 INFO L231 Difference]: Finished difference. Result has 221 places, 441 transitions, 6196 flow [2024-05-12 13:38:35,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6003, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6196, PETRI_PLACES=221, PETRI_TRANSITIONS=441} [2024-05-12 13:38:35,792 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-05-12 13:38:35,793 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 441 transitions, 6196 flow [2024-05-12 13:38:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:35,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:38:35,794 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1923667487, now seen corresponding path program 4 times [2024-05-12 13:38:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012994730] [2024-05-12 13:38:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:36,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012994730] [2024-05-12 13:38:36,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012994730] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:36,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:36,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451814948] [2024-05-12 13:38:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:37,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:38:37,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 441 transitions, 6196 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:37,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:37,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:38:37,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:39,062 INFO L124 PetriNetUnfolderBase]: 6865/10351 cut-off events. [2024-05-12 13:38:39,062 INFO L125 PetriNetUnfolderBase]: For 261998/262295 co-relation queries the response was YES. [2024-05-12 13:38:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74251 conditions, 10351 events. 6865/10351 cut-off events. For 261998/262295 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 61427 event pairs, 1517 based on Foata normal form. 44/9996 useless extension candidates. Maximal degree in co-relation 74146. Up to 8423 conditions per place. [2024-05-12 13:38:39,204 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 307 selfloop transitions, 135 changer transitions 0/502 dead transitions. [2024-05-12 13:38:39,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 502 transitions, 7601 flow [2024-05-12 13:38:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 13:38:39,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-05-12 13:38:39,206 INFO L175 Difference]: Start difference. First operand has 221 places, 441 transitions, 6196 flow. Second operand 8 states and 206 transitions. [2024-05-12 13:38:39,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 502 transitions, 7601 flow [2024-05-12 13:38:39,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 502 transitions, 7490 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:39,762 INFO L231 Difference]: Finished difference. Result has 224 places, 444 transitions, 6443 flow [2024-05-12 13:38:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6085, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6443, PETRI_PLACES=224, PETRI_TRANSITIONS=444} [2024-05-12 13:38:39,763 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-05-12 13:38:39,763 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 444 transitions, 6443 flow [2024-05-12 13:38:39,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:39,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:39,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:39,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:38:39,764 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1136000369, now seen corresponding path program 2 times [2024-05-12 13:38:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:39,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108198211] [2024-05-12 13:38:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:40,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:40,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108198211] [2024-05-12 13:38:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108198211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949728712] [2024-05-12 13:38:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:40,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:40,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:40,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 444 transitions, 6443 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-05-12 13:38:40,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:40,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:42,693 INFO L124 PetriNetUnfolderBase]: 7195/10843 cut-off events. [2024-05-12 13:38:42,694 INFO L125 PetriNetUnfolderBase]: For 253264/253266 co-relation queries the response was YES. [2024-05-12 13:38:42,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76908 conditions, 10843 events. 7195/10843 cut-off events. For 253264/253266 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 64411 event pairs, 1725 based on Foata normal form. 6/10638 useless extension candidates. Maximal degree in co-relation 76802. Up to 9661 conditions per place. [2024-05-12 13:38:42,845 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 389 selfloop transitions, 91 changer transitions 0/487 dead transitions. [2024-05-12 13:38:42,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 487 transitions, 7581 flow [2024-05-12 13:38:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:38:42,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:38:42,847 INFO L175 Difference]: Start difference. First operand has 224 places, 444 transitions, 6443 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:38:42,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 487 transitions, 7581 flow [2024-05-12 13:38:43,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 487 transitions, 7319 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:43,405 INFO L231 Difference]: Finished difference. Result has 227 places, 444 transitions, 6386 flow [2024-05-12 13:38:43,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6386, PETRI_PLACES=227, PETRI_TRANSITIONS=444} [2024-05-12 13:38:43,406 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-05-12 13:38:43,406 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 444 transitions, 6386 flow [2024-05-12 13:38:43,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-05-12 13:38:43,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:43,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:43,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:38:43,407 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:43,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1135790840, now seen corresponding path program 1 times [2024-05-12 13:38:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:43,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012379124] [2024-05-12 13:38:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012379124] [2024-05-12 13:38:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012379124] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:44,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776186919] [2024-05-12 13:38:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:44,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:44,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 444 transitions, 6386 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:44,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:44,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:44,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:46,661 INFO L124 PetriNetUnfolderBase]: 7237/10890 cut-off events. [2024-05-12 13:38:46,661 INFO L125 PetriNetUnfolderBase]: For 257843/257849 co-relation queries the response was YES. [2024-05-12 13:38:46,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76932 conditions, 10890 events. 7237/10890 cut-off events. For 257843/257849 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 64632 event pairs, 1795 based on Foata normal form. 10/10694 useless extension candidates. Maximal degree in co-relation 76825. Up to 10126 conditions per place. [2024-05-12 13:38:46,818 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 461 selfloop transitions, 34 changer transitions 0/502 dead transitions. [2024-05-12 13:38:46,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 502 transitions, 7695 flow [2024-05-12 13:38:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-05-12 13:38:46,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044917257683216 [2024-05-12 13:38:46,819 INFO L175 Difference]: Start difference. First operand has 227 places, 444 transitions, 6386 flow. Second operand 9 states and 199 transitions. [2024-05-12 13:38:46,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 502 transitions, 7695 flow [2024-05-12 13:38:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 502 transitions, 7417 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 13:38:47,550 INFO L231 Difference]: Finished difference. Result has 229 places, 447 transitions, 6264 flow [2024-05-12 13:38:47,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6264, PETRI_PLACES=229, PETRI_TRANSITIONS=447} [2024-05-12 13:38:47,551 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 176 predicate places. [2024-05-12 13:38:47,551 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 447 transitions, 6264 flow [2024-05-12 13:38:47,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:47,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:47,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:47,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:38:47,552 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:47,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1071699739, now seen corresponding path program 5 times [2024-05-12 13:38:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847859764] [2024-05-12 13:38:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:48,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847859764] [2024-05-12 13:38:48,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847859764] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:48,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:48,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364434642] [2024-05-12 13:38:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:48,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:38:48,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 447 transitions, 6264 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:48,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:48,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:38:48,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:51,106 INFO L124 PetriNetUnfolderBase]: 7042/10618 cut-off events. [2024-05-12 13:38:51,106 INFO L125 PetriNetUnfolderBase]: For 286025/286305 co-relation queries the response was YES. [2024-05-12 13:38:51,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76983 conditions, 10618 events. 7042/10618 cut-off events. For 286025/286305 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 63482 event pairs, 1378 based on Foata normal form. 53/10291 useless extension candidates. Maximal degree in co-relation 76875. Up to 8228 conditions per place. [2024-05-12 13:38:51,222 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 304 selfloop transitions, 145 changer transitions 0/510 dead transitions. [2024-05-12 13:38:51,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 510 transitions, 7830 flow [2024-05-12 13:38:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-05-12 13:38:51,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-05-12 13:38:51,224 INFO L175 Difference]: Start difference. First operand has 229 places, 447 transitions, 6264 flow. Second operand 8 states and 203 transitions. [2024-05-12 13:38:51,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 510 transitions, 7830 flow [2024-05-12 13:38:51,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 510 transitions, 7705 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 13:38:51,630 INFO L231 Difference]: Finished difference. Result has 230 places, 450 transitions, 6525 flow [2024-05-12 13:38:51,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6525, PETRI_PLACES=230, PETRI_TRANSITIONS=450} [2024-05-12 13:38:51,631 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-05-12 13:38:51,631 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 450 transitions, 6525 flow [2024-05-12 13:38:51,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:51,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:51,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:51,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:38:51,632 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1491662518, now seen corresponding path program 2 times [2024-05-12 13:38:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868709546] [2024-05-12 13:38:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868709546] [2024-05-12 13:38:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868709546] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831946899] [2024-05-12 13:38:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:52,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:52,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:52,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 450 transitions, 6525 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:52,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:52,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:55,030 INFO L124 PetriNetUnfolderBase]: 7578/11393 cut-off events. [2024-05-12 13:38:55,030 INFO L125 PetriNetUnfolderBase]: For 296264/296298 co-relation queries the response was YES. [2024-05-12 13:38:55,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81809 conditions, 11393 events. 7578/11393 cut-off events. For 296264/296298 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 67912 event pairs, 1667 based on Foata normal form. 37/11223 useless extension candidates. Maximal degree in co-relation 81700. Up to 9856 conditions per place. [2024-05-12 13:38:55,161 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 374 selfloop transitions, 127 changer transitions 0/508 dead transitions. [2024-05-12 13:38:55,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 508 transitions, 7861 flow [2024-05-12 13:38:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:38:55,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-05-12 13:38:55,163 INFO L175 Difference]: Start difference. First operand has 230 places, 450 transitions, 6525 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:38:55,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 508 transitions, 7861 flow [2024-05-12 13:38:55,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 508 transitions, 7539 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:55,688 INFO L231 Difference]: Finished difference. Result has 233 places, 453 transitions, 6548 flow [2024-05-12 13:38:55,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6203, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6548, PETRI_PLACES=233, PETRI_TRANSITIONS=453} [2024-05-12 13:38:55,689 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 180 predicate places. [2024-05-12 13:38:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 453 transitions, 6548 flow [2024-05-12 13:38:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:55,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:55,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:38:55,690 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:55,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1501185718, now seen corresponding path program 3 times [2024-05-12 13:38:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983195699] [2024-05-12 13:38:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:56,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:56,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983195699] [2024-05-12 13:38:56,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983195699] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:56,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:56,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:56,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819968584] [2024-05-12 13:38:56,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:56,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:56,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:56,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:56,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 453 transitions, 6548 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:56,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:56,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:56,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:59,256 INFO L124 PetriNetUnfolderBase]: 7636/11473 cut-off events. [2024-05-12 13:38:59,257 INFO L125 PetriNetUnfolderBase]: For 295222/295264 co-relation queries the response was YES. [2024-05-12 13:38:59,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82515 conditions, 11473 events. 7636/11473 cut-off events. For 295222/295264 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 68511 event pairs, 1699 based on Foata normal form. 36/11304 useless extension candidates. Maximal degree in co-relation 82405. Up to 10455 conditions per place. [2024-05-12 13:38:59,412 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 459 selfloop transitions, 71 changer transitions 0/537 dead transitions. [2024-05-12 13:38:59,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 537 transitions, 8484 flow [2024-05-12 13:38:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-05-12 13:38:59,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2024-05-12 13:38:59,414 INFO L175 Difference]: Start difference. First operand has 233 places, 453 transitions, 6548 flow. Second operand 9 states and 200 transitions. [2024-05-12 13:38:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 537 transitions, 8484 flow [2024-05-12 13:39:00,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 537 transitions, 8119 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:00,039 INFO L231 Difference]: Finished difference. Result has 239 places, 486 transitions, 6985 flow [2024-05-12 13:39:00,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6253, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6985, PETRI_PLACES=239, PETRI_TRANSITIONS=486} [2024-05-12 13:39:00,040 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-05-12 13:39:00,041 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 486 transitions, 6985 flow [2024-05-12 13:39:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:00,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:00,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:00,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:39:00,041 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:00,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash -935036766, now seen corresponding path program 4 times [2024-05-12 13:39:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:00,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339100966] [2024-05-12 13:39:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339100966] [2024-05-12 13:39:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339100966] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643462298] [2024-05-12 13:39:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:01,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:01,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 486 transitions, 6985 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:01,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:01,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:01,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:03,544 INFO L124 PetriNetUnfolderBase]: 7688/11555 cut-off events. [2024-05-12 13:39:03,545 INFO L125 PetriNetUnfolderBase]: For 308232/308274 co-relation queries the response was YES. [2024-05-12 13:39:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83781 conditions, 11555 events. 7688/11555 cut-off events. For 308232/308274 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 69070 event pairs, 1789 based on Foata normal form. 36/11384 useless extension candidates. Maximal degree in co-relation 83666. Up to 10599 conditions per place. [2024-05-12 13:39:03,707 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 460 selfloop transitions, 91 changer transitions 0/558 dead transitions. [2024-05-12 13:39:03,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 558 transitions, 8606 flow [2024-05-12 13:39:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:39:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:39:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-05-12 13:39:03,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-05-12 13:39:03,709 INFO L175 Difference]: Start difference. First operand has 239 places, 486 transitions, 6985 flow. Second operand 10 states and 224 transitions. [2024-05-12 13:39:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 558 transitions, 8606 flow [2024-05-12 13:39:04,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 558 transitions, 8438 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-05-12 13:39:04,422 INFO L231 Difference]: Finished difference. Result has 247 places, 497 transitions, 7293 flow [2024-05-12 13:39:04,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6847, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7293, PETRI_PLACES=247, PETRI_TRANSITIONS=497} [2024-05-12 13:39:04,423 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-05-12 13:39:04,423 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 497 transitions, 7293 flow [2024-05-12 13:39:04,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:04,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:04,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:04,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:39:04,424 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:04,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1235162008, now seen corresponding path program 5 times [2024-05-12 13:39:04,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:04,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777902459] [2024-05-12 13:39:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:05,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:05,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777902459] [2024-05-12 13:39:05,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777902459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:05,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:05,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:05,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354008025] [2024-05-12 13:39:05,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:05,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:05,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 497 transitions, 7293 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:05,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:07,890 INFO L124 PetriNetUnfolderBase]: 7688/11558 cut-off events. [2024-05-12 13:39:07,891 INFO L125 PetriNetUnfolderBase]: For 314108/314150 co-relation queries the response was YES. [2024-05-12 13:39:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84391 conditions, 11558 events. 7688/11558 cut-off events. For 314108/314150 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 69156 event pairs, 1791 based on Foata normal form. 36/11386 useless extension candidates. Maximal degree in co-relation 84274. Up to 10700 conditions per place. [2024-05-12 13:39:08,067 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 484 selfloop transitions, 61 changer transitions 0/552 dead transitions. [2024-05-12 13:39:08,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 552 transitions, 8657 flow [2024-05-12 13:39:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-05-12 13:39:08,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47754137115839246 [2024-05-12 13:39:08,072 INFO L175 Difference]: Start difference. First operand has 247 places, 497 transitions, 7293 flow. Second operand 9 states and 202 transitions. [2024-05-12 13:39:08,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 552 transitions, 8657 flow [2024-05-12 13:39:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 552 transitions, 8400 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-05-12 13:39:08,985 INFO L231 Difference]: Finished difference. Result has 251 places, 499 transitions, 7229 flow [2024-05-12 13:39:08,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7036, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7229, PETRI_PLACES=251, PETRI_TRANSITIONS=499} [2024-05-12 13:39:08,986 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-05-12 13:39:08,986 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 499 transitions, 7229 flow [2024-05-12 13:39:08,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:08,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:08,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:08,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:39:08,986 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:08,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2078374634, now seen corresponding path program 1 times [2024-05-12 13:39:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682572766] [2024-05-12 13:39:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:08,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682572766] [2024-05-12 13:39:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682572766] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:10,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816984479] [2024-05-12 13:39:10,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:10,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:10,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 499 transitions, 7229 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:10,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:10,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:13,062 INFO L124 PetriNetUnfolderBase]: 7732/11590 cut-off events. [2024-05-12 13:39:13,063 INFO L125 PetriNetUnfolderBase]: For 319846/319852 co-relation queries the response was YES. [2024-05-12 13:39:13,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85334 conditions, 11590 events. 7732/11590 cut-off events. For 319846/319852 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 68856 event pairs, 1478 based on Foata normal form. 10/11404 useless extension candidates. Maximal degree in co-relation 85215. Up to 10628 conditions per place. [2024-05-12 13:39:13,216 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 503 selfloop transitions, 62 changer transitions 0/572 dead transitions. [2024-05-12 13:39:13,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 572 transitions, 8901 flow [2024-05-12 13:39:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-05-12 13:39:13,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-05-12 13:39:13,218 INFO L175 Difference]: Start difference. First operand has 251 places, 499 transitions, 7229 flow. Second operand 9 states and 201 transitions. [2024-05-12 13:39:13,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 572 transitions, 8901 flow [2024-05-12 13:39:13,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 572 transitions, 8698 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-05-12 13:39:13,979 INFO L231 Difference]: Finished difference. Result has 256 places, 519 transitions, 7564 flow [2024-05-12 13:39:13,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7026, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7564, PETRI_PLACES=256, PETRI_TRANSITIONS=519} [2024-05-12 13:39:13,980 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-05-12 13:39:13,980 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 519 transitions, 7564 flow [2024-05-12 13:39:13,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:13,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:13,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:13,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:39:13,981 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:13,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash -666551398, now seen corresponding path program 2 times [2024-05-12 13:39:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513797316] [2024-05-12 13:39:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:15,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:15,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513797316] [2024-05-12 13:39:15,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513797316] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:15,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:15,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339283191] [2024-05-12 13:39:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:15,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:15,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:15,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 519 transitions, 7564 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:15,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:15,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:15,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:17,803 INFO L124 PetriNetUnfolderBase]: 7813/11679 cut-off events. [2024-05-12 13:39:17,804 INFO L125 PetriNetUnfolderBase]: For 343728/343736 co-relation queries the response was YES. [2024-05-12 13:39:17,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87857 conditions, 11679 events. 7813/11679 cut-off events. For 343728/343736 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 69313 event pairs, 1772 based on Foata normal form. 12/11505 useless extension candidates. Maximal degree in co-relation 87735. Up to 10704 conditions per place. [2024-05-12 13:39:17,955 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 510 selfloop transitions, 73 changer transitions 0/590 dead transitions. [2024-05-12 13:39:17,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 590 transitions, 9450 flow [2024-05-12 13:39:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-05-12 13:39:17,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-05-12 13:39:17,956 INFO L175 Difference]: Start difference. First operand has 256 places, 519 transitions, 7564 flow. Second operand 9 states and 206 transitions. [2024-05-12 13:39:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 590 transitions, 9450 flow [2024-05-12 13:39:18,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 590 transitions, 9204 flow, removed 118 selfloop flow, removed 2 redundant places. [2024-05-12 13:39:18,730 INFO L231 Difference]: Finished difference. Result has 265 places, 533 transitions, 7856 flow [2024-05-12 13:39:18,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7318, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7856, PETRI_PLACES=265, PETRI_TRANSITIONS=533} [2024-05-12 13:39:18,730 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-05-12 13:39:18,730 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 533 transitions, 7856 flow [2024-05-12 13:39:18,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:18,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:18,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:39:18,731 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 192922428, now seen corresponding path program 3 times [2024-05-12 13:39:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400049577] [2024-05-12 13:39:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:19,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400049577] [2024-05-12 13:39:19,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400049577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:19,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:19,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478427537] [2024-05-12 13:39:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:19,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:19,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 533 transitions, 7856 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:19,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:19,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:19,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:22,453 INFO L124 PetriNetUnfolderBase]: 7810/11671 cut-off events. [2024-05-12 13:39:22,453 INFO L125 PetriNetUnfolderBase]: For 357262/357270 co-relation queries the response was YES. [2024-05-12 13:39:22,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88342 conditions, 11671 events. 7810/11671 cut-off events. For 357262/357270 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 69217 event pairs, 1776 based on Foata normal form. 12/11498 useless extension candidates. Maximal degree in co-relation 88216. Up to 10794 conditions per place. [2024-05-12 13:39:22,605 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 517 selfloop transitions, 66 changer transitions 0/590 dead transitions. [2024-05-12 13:39:22,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 590 transitions, 9329 flow [2024-05-12 13:39:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-05-12 13:39:22,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846335697399527 [2024-05-12 13:39:22,608 INFO L175 Difference]: Start difference. First operand has 265 places, 533 transitions, 7856 flow. Second operand 9 states and 205 transitions. [2024-05-12 13:39:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 590 transitions, 9329 flow [2024-05-12 13:39:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 590 transitions, 8973 flow, removed 153 selfloop flow, removed 4 redundant places. [2024-05-12 13:39:23,518 INFO L231 Difference]: Finished difference. Result has 270 places, 536 transitions, 7738 flow [2024-05-12 13:39:23,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7574, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7738, PETRI_PLACES=270, PETRI_TRANSITIONS=536} [2024-05-12 13:39:23,520 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-05-12 13:39:23,521 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 536 transitions, 7738 flow [2024-05-12 13:39:23,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:23,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:23,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:23,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:39:23,521 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:23,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -163036534, now seen corresponding path program 1 times [2024-05-12 13:39:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193319778] [2024-05-12 13:39:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193319778] [2024-05-12 13:39:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193319778] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:24,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:24,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181267182] [2024-05-12 13:39:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:24,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:24,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:24,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 536 transitions, 7738 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:24,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:27,562 INFO L124 PetriNetUnfolderBase]: 7998/11956 cut-off events. [2024-05-12 13:39:27,562 INFO L125 PetriNetUnfolderBase]: For 379633/379643 co-relation queries the response was YES. [2024-05-12 13:39:27,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89658 conditions, 11956 events. 7998/11956 cut-off events. For 379633/379643 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 71159 event pairs, 1780 based on Foata normal form. 30/11801 useless extension candidates. Maximal degree in co-relation 89530. Up to 10895 conditions per place. [2024-05-12 13:39:27,733 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 537 selfloop transitions, 63 changer transitions 0/607 dead transitions. [2024-05-12 13:39:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 607 transitions, 9318 flow [2024-05-12 13:39:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:39:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:39:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-05-12 13:39:27,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:39:27,734 INFO L175 Difference]: Start difference. First operand has 270 places, 536 transitions, 7738 flow. Second operand 10 states and 230 transitions. [2024-05-12 13:39:27,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 607 transitions, 9318 flow [2024-05-12 13:39:28,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 607 transitions, 9178 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:28,540 INFO L231 Difference]: Finished difference. Result has 273 places, 541 transitions, 7838 flow [2024-05-12 13:39:28,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7838, PETRI_PLACES=273, PETRI_TRANSITIONS=541} [2024-05-12 13:39:28,540 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-05-12 13:39:28,540 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 541 transitions, 7838 flow [2024-05-12 13:39:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:28,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:28,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:28,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:39:28,541 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:28,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash 335293082, now seen corresponding path program 4 times [2024-05-12 13:39:28,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:28,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581422315] [2024-05-12 13:39:28,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:28,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581422315] [2024-05-12 13:39:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581422315] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:29,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:29,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660709819] [2024-05-12 13:39:29,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:29,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:29,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:29,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:29,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:29,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 541 transitions, 7838 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:29,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:29,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:29,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:32,512 INFO L124 PetriNetUnfolderBase]: 8186/12244 cut-off events. [2024-05-12 13:39:32,513 INFO L125 PetriNetUnfolderBase]: For 405021/405023 co-relation queries the response was YES. [2024-05-12 13:39:32,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92408 conditions, 12244 events. 8186/12244 cut-off events. For 405021/405023 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 73320 event pairs, 1787 based on Foata normal form. 26/12083 useless extension candidates. Maximal degree in co-relation 92279. Up to 10876 conditions per place. [2024-05-12 13:39:32,674 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 490 selfloop transitions, 102 changer transitions 0/599 dead transitions. [2024-05-12 13:39:32,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 599 transitions, 9360 flow [2024-05-12 13:39:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-05-12 13:39:32,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-05-12 13:39:32,675 INFO L175 Difference]: Start difference. First operand has 273 places, 541 transitions, 7838 flow. Second operand 9 states and 210 transitions. [2024-05-12 13:39:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 599 transitions, 9360 flow [2024-05-12 13:39:33,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 599 transitions, 9208 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-05-12 13:39:33,554 INFO L231 Difference]: Finished difference. Result has 274 places, 544 transitions, 7998 flow [2024-05-12 13:39:33,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7686, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7998, PETRI_PLACES=274, PETRI_TRANSITIONS=544} [2024-05-12 13:39:33,555 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-05-12 13:39:33,555 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 544 transitions, 7998 flow [2024-05-12 13:39:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:33,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:39:33,555 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:33,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 335300026, now seen corresponding path program 2 times [2024-05-12 13:39:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:33,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294959901] [2024-05-12 13:39:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294959901] [2024-05-12 13:39:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294959901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:34,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117447836] [2024-05-12 13:39:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:34,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:34,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 544 transitions, 7998 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:34,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:34,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:34,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:37,658 INFO L124 PetriNetUnfolderBase]: 8382/12536 cut-off events. [2024-05-12 13:39:37,658 INFO L125 PetriNetUnfolderBase]: For 422743/422745 co-relation queries the response was YES. [2024-05-12 13:39:37,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95244 conditions, 12536 events. 8382/12536 cut-off events. For 422743/422745 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 75276 event pairs, 1803 based on Foata normal form. 22/12371 useless extension candidates. Maximal degree in co-relation 95114. Up to 10948 conditions per place. [2024-05-12 13:39:37,835 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 498 selfloop transitions, 108 changer transitions 0/613 dead transitions. [2024-05-12 13:39:37,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 613 transitions, 9634 flow [2024-05-12 13:39:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:39:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:39:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-05-12 13:39:37,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2024-05-12 13:39:37,837 INFO L175 Difference]: Start difference. First operand has 274 places, 544 transitions, 7998 flow. Second operand 10 states and 232 transitions. [2024-05-12 13:39:37,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 613 transitions, 9634 flow [2024-05-12 13:39:38,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 613 transitions, 9368 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:38,749 INFO L231 Difference]: Finished difference. Result has 277 places, 550 transitions, 8106 flow [2024-05-12 13:39:38,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7740, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8106, PETRI_PLACES=277, PETRI_TRANSITIONS=550} [2024-05-12 13:39:38,750 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 224 predicate places. [2024-05-12 13:39:38,750 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 550 transitions, 8106 flow [2024-05-12 13:39:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:38,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:38,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:39:38,751 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:38,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 328863992, now seen corresponding path program 5 times [2024-05-12 13:39:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:38,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537329945] [2024-05-12 13:39:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:39,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537329945] [2024-05-12 13:39:39,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537329945] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:39,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:39,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:39,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78571900] [2024-05-12 13:39:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:39,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:39,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:40,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:40,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 550 transitions, 8106 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:40,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:40,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:40,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:42,889 INFO L124 PetriNetUnfolderBase]: 8416/12586 cut-off events. [2024-05-12 13:39:42,890 INFO L125 PetriNetUnfolderBase]: For 418851/418853 co-relation queries the response was YES. [2024-05-12 13:39:43,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95681 conditions, 12586 events. 8416/12586 cut-off events. For 418851/418853 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 75670 event pairs, 1850 based on Foata normal form. 6/12405 useless extension candidates. Maximal degree in co-relation 95550. Up to 11394 conditions per place. [2024-05-12 13:39:43,079 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 492 selfloop transitions, 105 changer transitions 0/604 dead transitions. [2024-05-12 13:39:43,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 604 transitions, 9614 flow [2024-05-12 13:39:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-05-12 13:39:43,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:39:43,080 INFO L175 Difference]: Start difference. First operand has 277 places, 550 transitions, 8106 flow. Second operand 9 states and 207 transitions. [2024-05-12 13:39:43,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 604 transitions, 9614 flow [2024-05-12 13:39:44,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 604 transitions, 9352 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:44,214 INFO L231 Difference]: Finished difference. Result has 279 places, 553 transitions, 8170 flow [2024-05-12 13:39:44,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7844, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8170, PETRI_PLACES=279, PETRI_TRANSITIONS=553} [2024-05-12 13:39:44,215 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-05-12 13:39:44,215 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 553 transitions, 8170 flow [2024-05-12 13:39:44,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:44,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:44,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:44,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:39:44,215 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:44,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -856271930, now seen corresponding path program 3 times [2024-05-12 13:39:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:44,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573117037] [2024-05-12 13:39:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573117037] [2024-05-12 13:39:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573117037] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934212218] [2024-05-12 13:39:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:45,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:45,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 553 transitions, 8170 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:45,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:45,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:45,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:47,984 INFO L124 PetriNetUnfolderBase]: 8575/12920 cut-off events. [2024-05-12 13:39:47,984 INFO L125 PetriNetUnfolderBase]: For 457263/457265 co-relation queries the response was YES. [2024-05-12 13:39:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97835 conditions, 12920 events. 8575/12920 cut-off events. For 457263/457265 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 78637 event pairs, 1847 based on Foata normal form. 22/12724 useless extension candidates. Maximal degree in co-relation 97703. Up to 11070 conditions per place. [2024-05-12 13:39:48,182 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 491 selfloop transitions, 113 changer transitions 0/611 dead transitions. [2024-05-12 13:39:48,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 611 transitions, 9744 flow [2024-05-12 13:39:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-05-12 13:39:48,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-05-12 13:39:48,183 INFO L175 Difference]: Start difference. First operand has 279 places, 553 transitions, 8170 flow. Second operand 9 states and 209 transitions. [2024-05-12 13:39:48,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 611 transitions, 9744 flow [2024-05-12 13:39:49,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 611 transitions, 9442 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:49,192 INFO L231 Difference]: Finished difference. Result has 281 places, 556 transitions, 8241 flow [2024-05-12 13:39:49,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7868, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8241, PETRI_PLACES=281, PETRI_TRANSITIONS=556} [2024-05-12 13:39:49,192 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 228 predicate places. [2024-05-12 13:39:49,193 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 556 transitions, 8241 flow [2024-05-12 13:39:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:49,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:49,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:39:49,193 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:49,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -341035302, now seen corresponding path program 6 times [2024-05-12 13:39:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:49,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924395097] [2024-05-12 13:39:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:50,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924395097] [2024-05-12 13:39:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924395097] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202678072] [2024-05-12 13:39:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:50,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:50,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:50,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 556 transitions, 8241 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:50,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:50,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:50,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:53,217 INFO L124 PetriNetUnfolderBase]: 8609/12847 cut-off events. [2024-05-12 13:39:53,217 INFO L125 PetriNetUnfolderBase]: For 458289/458291 co-relation queries the response was YES. [2024-05-12 13:39:53,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99048 conditions, 12847 events. 8609/12847 cut-off events. For 458289/458291 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 77345 event pairs, 1868 based on Foata normal form. 6/12676 useless extension candidates. Maximal degree in co-relation 98915. Up to 11389 conditions per place. [2024-05-12 13:39:53,400 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 497 selfloop transitions, 113 changer transitions 0/617 dead transitions. [2024-05-12 13:39:53,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 617 transitions, 9887 flow [2024-05-12 13:39:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:39:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-05-12 13:39:53,406 INFO L175 Difference]: Start difference. First operand has 281 places, 556 transitions, 8241 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:39:53,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 617 transitions, 9887 flow [2024-05-12 13:39:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 617 transitions, 9604 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:54,488 INFO L231 Difference]: Finished difference. Result has 284 places, 562 transitions, 8400 flow [2024-05-12 13:39:54,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7958, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8400, PETRI_PLACES=284, PETRI_TRANSITIONS=562} [2024-05-12 13:39:54,488 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-05-12 13:39:54,489 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 562 transitions, 8400 flow [2024-05-12 13:39:54,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:54,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:54,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:54,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:39:54,489 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:54,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash 214003074, now seen corresponding path program 4 times [2024-05-12 13:39:54,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:54,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112167074] [2024-05-12 13:39:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112167074] [2024-05-12 13:39:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112167074] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298754346] [2024-05-12 13:39:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:55,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:55,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:55,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 562 transitions, 8400 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:58,534 INFO L124 PetriNetUnfolderBase]: 8835/13287 cut-off events. [2024-05-12 13:39:58,534 INFO L125 PetriNetUnfolderBase]: For 512916/512918 co-relation queries the response was YES. [2024-05-12 13:39:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102869 conditions, 13287 events. 8835/13287 cut-off events. For 512916/512918 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 81164 event pairs, 1873 based on Foata normal form. 18/13098 useless extension candidates. Maximal degree in co-relation 102734. Up to 10775 conditions per place. [2024-05-12 13:39:58,742 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 499 selfloop transitions, 122 changer transitions 0/628 dead transitions. [2024-05-12 13:39:58,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 628 transitions, 10296 flow [2024-05-12 13:39:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:39:58,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:39:58,744 INFO L175 Difference]: Start difference. First operand has 284 places, 562 transitions, 8400 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:39:58,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 628 transitions, 10296 flow [2024-05-12 13:39:59,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 628 transitions, 10101 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-05-12 13:39:59,974 INFO L231 Difference]: Finished difference. Result has 290 places, 568 transitions, 8697 flow [2024-05-12 13:39:59,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8205, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8697, PETRI_PLACES=290, PETRI_TRANSITIONS=568} [2024-05-12 13:39:59,974 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-05-12 13:39:59,974 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 568 transitions, 8697 flow [2024-05-12 13:39:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:59,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:59,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:59,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:39:59,975 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:59,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1003347290, now seen corresponding path program 7 times [2024-05-12 13:39:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946875759] [2024-05-12 13:39:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946875759] [2024-05-12 13:40:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946875759] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:01,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:40:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407025569] [2024-05-12 13:40:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:01,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:40:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:40:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:40:01,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:01,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 568 transitions, 8697 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:01,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:01,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:01,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:04,645 INFO L124 PetriNetUnfolderBase]: 9023/13439 cut-off events. [2024-05-12 13:40:04,645 INFO L125 PetriNetUnfolderBase]: For 555528/555562 co-relation queries the response was YES. [2024-05-12 13:40:04,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106635 conditions, 13439 events. 9023/13439 cut-off events. For 555528/555562 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 81484 event pairs, 1703 based on Foata normal form. 37/13311 useless extension candidates. Maximal degree in co-relation 106497. Up to 11684 conditions per place. [2024-05-12 13:40:04,863 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 438 selfloop transitions, 181 changer transitions 0/626 dead transitions. [2024-05-12 13:40:04,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 626 transitions, 10317 flow [2024-05-12 13:40:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:40:04,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:40:04,864 INFO L175 Difference]: Start difference. First operand has 290 places, 568 transitions, 8697 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:40:04,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 626 transitions, 10317 flow [2024-05-12 13:40:06,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 626 transitions, 10115 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-05-12 13:40:06,109 INFO L231 Difference]: Finished difference. Result has 294 places, 571 transitions, 8995 flow [2024-05-12 13:40:06,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8495, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8995, PETRI_PLACES=294, PETRI_TRANSITIONS=571} [2024-05-12 13:40:06,110 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 241 predicate places. [2024-05-12 13:40:06,110 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 571 transitions, 8995 flow [2024-05-12 13:40:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:06,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:06,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:06,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:40:06,110 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:06,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1003101336, now seen corresponding path program 5 times [2024-05-12 13:40:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:06,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134928274] [2024-05-12 13:40:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134928274] [2024-05-12 13:40:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134928274] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:40:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527879611] [2024-05-12 13:40:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:40:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:40:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:40:07,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:07,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 571 transitions, 8995 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:07,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:07,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:11,405 INFO L124 PetriNetUnfolderBase]: 9254/13793 cut-off events. [2024-05-12 13:40:11,405 INFO L125 PetriNetUnfolderBase]: For 591778/591812 co-relation queries the response was YES. [2024-05-12 13:40:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111185 conditions, 13793 events. 9254/13793 cut-off events. For 591778/591812 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 84067 event pairs, 1750 based on Foata normal form. 29/13658 useless extension candidates. Maximal degree in co-relation 111045. Up to 11467 conditions per place. [2024-05-12 13:40:11,601 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 442 selfloop transitions, 187 changer transitions 0/636 dead transitions. [2024-05-12 13:40:11,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 636 transitions, 10969 flow [2024-05-12 13:40:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-05-12 13:40:11,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:40:11,602 INFO L175 Difference]: Start difference. First operand has 294 places, 571 transitions, 8995 flow. Second operand 9 states and 216 transitions. [2024-05-12 13:40:11,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 636 transitions, 10969 flow [2024-05-12 13:40:12,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 636 transitions, 10523 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-05-12 13:40:12,865 INFO L231 Difference]: Finished difference. Result has 297 places, 576 transitions, 9197 flow [2024-05-12 13:40:12,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8549, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9197, PETRI_PLACES=297, PETRI_TRANSITIONS=576} [2024-05-12 13:40:12,866 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-05-12 13:40:12,866 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 576 transitions, 9197 flow [2024-05-12 13:40:12,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:12,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:12,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:12,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:40:12,867 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:12,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash -707882136, now seen corresponding path program 6 times [2024-05-12 13:40:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033322341] [2024-05-12 13:40:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:13,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:13,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033322341] [2024-05-12 13:40:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033322341] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:40:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028584082] [2024-05-12 13:40:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:40:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:13,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:40:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:40:13,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:13,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 576 transitions, 9197 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:13,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:13,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:13,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:17,926 INFO L124 PetriNetUnfolderBase]: 9527/14329 cut-off events. [2024-05-12 13:40:17,927 INFO L125 PetriNetUnfolderBase]: For 652535/652569 co-relation queries the response was YES. [2024-05-12 13:40:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115990 conditions, 14329 events. 9527/14329 cut-off events. For 652535/652569 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 88777 event pairs, 1624 based on Foata normal form. 29/14155 useless extension candidates. Maximal degree in co-relation 115848. Up to 9987 conditions per place. [2024-05-12 13:40:18,141 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 419 selfloop transitions, 219 changer transitions 0/645 dead transitions. [2024-05-12 13:40:18,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 645 transitions, 11373 flow [2024-05-12 13:40:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-05-12 13:40:18,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-05-12 13:40:18,142 INFO L175 Difference]: Start difference. First operand has 297 places, 576 transitions, 9197 flow. Second operand 9 states and 214 transitions. [2024-05-12 13:40:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 645 transitions, 11373 flow [2024-05-12 13:40:19,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 645 transitions, 11055 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-05-12 13:40:19,651 INFO L231 Difference]: Finished difference. Result has 302 places, 583 transitions, 9687 flow [2024-05-12 13:40:19,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8879, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9687, PETRI_PLACES=302, PETRI_TRANSITIONS=583} [2024-05-12 13:40:19,652 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-05-12 13:40:19,652 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 583 transitions, 9687 flow [2024-05-12 13:40:19,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:19,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:19,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:40:19,653 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:19,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -371357598, now seen corresponding path program 8 times [2024-05-12 13:40:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:19,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108329477] [2024-05-12 13:40:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108329477] [2024-05-12 13:40:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108329477] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:20,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:20,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:40:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394155584] [2024-05-12 13:40:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:20,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:40:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:40:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:40:20,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:20,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 583 transitions, 9687 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:20,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:20,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:24,979 INFO L124 PetriNetUnfolderBase]: 9561/14265 cut-off events. [2024-05-12 13:40:24,979 INFO L125 PetriNetUnfolderBase]: For 651728/651762 co-relation queries the response was YES. [2024-05-12 13:40:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117711 conditions, 14265 events. 9561/14265 cut-off events. For 651728/651762 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 87920 event pairs, 1905 based on Foata normal form. 17/14117 useless extension candidates. Maximal degree in co-relation 117566. Up to 13106 conditions per place. [2024-05-12 13:40:25,202 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 495 selfloop transitions, 134 changer transitions 0/636 dead transitions. [2024-05-12 13:40:25,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 636 transitions, 11301 flow [2024-05-12 13:40:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-05-12 13:40:25,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846335697399527 [2024-05-12 13:40:25,203 INFO L175 Difference]: Start difference. First operand has 302 places, 583 transitions, 9687 flow. Second operand 9 states and 205 transitions. [2024-05-12 13:40:25,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 636 transitions, 11301 flow [2024-05-12 13:40:26,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 636 transitions, 10877 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-05-12 13:40:26,963 INFO L231 Difference]: Finished difference. Result has 307 places, 586 transitions, 9681 flow [2024-05-12 13:40:26,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9267, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9681, PETRI_PLACES=307, PETRI_TRANSITIONS=586} [2024-05-12 13:40:26,964 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 254 predicate places. [2024-05-12 13:40:26,964 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 586 transitions, 9681 flow [2024-05-12 13:40:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:26,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:26,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:26,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:40:26,965 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:26,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash -364690924, now seen corresponding path program 7 times [2024-05-12 13:40:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720039406] [2024-05-12 13:40:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720039406] [2024-05-12 13:40:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720039406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:40:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657279727] [2024-05-12 13:40:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:40:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:40:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:40:27,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:27,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 586 transitions, 9681 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:27,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:27,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:27,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:31,912 INFO L124 PetriNetUnfolderBase]: 9707/14487 cut-off events. [2024-05-12 13:40:31,912 INFO L125 PetriNetUnfolderBase]: For 677504/677538 co-relation queries the response was YES. [2024-05-12 13:40:32,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118887 conditions, 14487 events. 9707/14487 cut-off events. For 677504/677538 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 89338 event pairs, 1885 based on Foata normal form. 37/14359 useless extension candidates. Maximal degree in co-relation 118740. Up to 12732 conditions per place. [2024-05-12 13:40:32,122 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 463 selfloop transitions, 174 changer transitions 0/644 dead transitions. [2024-05-12 13:40:32,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 644 transitions, 11353 flow [2024-05-12 13:40:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:40:32,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-05-12 13:40:32,123 INFO L175 Difference]: Start difference. First operand has 307 places, 586 transitions, 9681 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:40:32,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 644 transitions, 11353 flow [2024-05-12 13:40:33,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 644 transitions, 10904 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-05-12 13:40:33,777 INFO L231 Difference]: Finished difference. Result has 309 places, 589 transitions, 9734 flow [2024-05-12 13:40:33,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9734, PETRI_PLACES=309, PETRI_TRANSITIONS=589} [2024-05-12 13:40:33,778 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 256 predicate places. [2024-05-12 13:40:33,778 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 589 transitions, 9734 flow [2024-05-12 13:40:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:33,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:33,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:33,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:40:33,779 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:33,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:33,779 INFO L85 PathProgramCache]: Analyzing trace with hash -364921564, now seen corresponding path program 8 times [2024-05-12 13:40:33,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910319242] [2024-05-12 13:40:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:33,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:35,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:35,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910319242] [2024-05-12 13:40:35,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910319242] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:35,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:35,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:40:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829414146] [2024-05-12 13:40:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:35,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:40:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:40:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:40:35,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:35,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 589 transitions, 9734 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:35,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:35,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:35,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:39,315 INFO L124 PetriNetUnfolderBase]: 9861/14718 cut-off events. [2024-05-12 13:40:39,315 INFO L125 PetriNetUnfolderBase]: For 701606/701640 co-relation queries the response was YES. [2024-05-12 13:40:39,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121526 conditions, 14718 events. 9861/14718 cut-off events. For 701606/701640 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 91210 event pairs, 1953 based on Foata normal form. 33/14587 useless extension candidates. Maximal degree in co-relation 121378. Up to 13292 conditions per place. [2024-05-12 13:40:39,515 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 498 selfloop transitions, 142 changer transitions 0/647 dead transitions. [2024-05-12 13:40:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 647 transitions, 11428 flow [2024-05-12 13:40:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:40:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:40:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-05-12 13:40:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-05-12 13:40:39,517 INFO L175 Difference]: Start difference. First operand has 309 places, 589 transitions, 9734 flow. Second operand 9 states and 212 transitions. [2024-05-12 13:40:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 647 transitions, 11428 flow [2024-05-12 13:40:41,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 647 transitions, 10984 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-05-12 13:40:41,077 INFO L231 Difference]: Finished difference. Result has 311 places, 592 transitions, 9747 flow [2024-05-12 13:40:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9290, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9747, PETRI_PLACES=311, PETRI_TRANSITIONS=592} [2024-05-12 13:40:41,078 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 258 predicate places. [2024-05-12 13:40:41,078 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 592 transitions, 9747 flow [2024-05-12 13:40:41,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:41,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:41,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:41,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:40:41,079 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:41,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash -364682554, now seen corresponding path program 9 times [2024-05-12 13:40:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246183912] [2024-05-12 13:40:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246183912] [2024-05-12 13:40:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246183912] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:42,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:42,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:40:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788064792] [2024-05-12 13:40:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:40:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:40:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:40:42,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:40:42,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 592 transitions, 9747 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:42,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:42,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:40:42,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand