./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix025_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix025_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:25:07,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:25:07,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:25:07,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:25:07,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:25:07,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:25:07,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:25:07,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:25:07,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:25:07,874 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:25:07,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:25:07,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:25:07,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:25:07,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:25:07,877 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:25:07,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:25:07,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:25:07,878 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:25:07,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:25:07,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:25:07,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:25:07,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:25:07,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:25:07,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:25:07,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:25:07,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:25:07,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:25:07,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:25:07,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:25:07,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:25:07,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:25:07,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:25:07,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:25:07,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:25:07,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:25:07,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:25:07,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:25:07,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:25:07,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:25:07,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:25:07,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:25:07,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:25:07,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:25:07,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:25:08,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:25:08,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:25:08,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:25:08,156 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:25:08,157 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:25:08,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix025_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 18:25:08,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:25:08,419 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:25:08,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-27 18:25:09,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:25:09,957 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:25:09,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-27 18:25:09,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4e1fde1/25ae9dfa965240e58ccfeb00763cae13/FLAGc0d60f91f [2024-06-27 18:25:10,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4e1fde1/25ae9dfa965240e58ccfeb00763cae13 [2024-06-27 18:25:10,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:25:10,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:25:10,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:25:10,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:25:10,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:25:10,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:08" (1/2) ... [2024-06-27 18:25:10,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121577b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:25:10, skipping insertion in model container [2024-06-27 18:25:10,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:08" (1/2) ... [2024-06-27 18:25:10,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50adaa5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:25:10, skipping insertion in model container [2024-06-27 18:25:10,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:25:10" (2/2) ... [2024-06-27 18:25:10,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121577b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10, skipping insertion in model container [2024-06-27 18:25:10,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:25:10" (2/2) ... [2024-06-27 18:25:10,290 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:25:10,391 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:25:10,392 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:25:10,392 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:25:10,393 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:25:10,393 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:25:10,394 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-27 18:25:10,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:25:10,618 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i[999,1012] [2024-06-27 18:25:10,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:25:10,834 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:25:10,867 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:25:10,946 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:25:10,985 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:25:10,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10 WrapperNode [2024-06-27 18:25:10,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:25:10,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:25:10,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:25:10,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:25:10,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,064 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-27 18:25:11,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:25:11,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:25:11,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:25:11,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:25:11,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,117 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:25:11,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:25:11,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:25:11,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:25:11,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:25:11,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (1/1) ... [2024-06-27 18:25:11,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:25:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:25:11,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:25:11,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:25:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:25:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:25:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:25:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:25:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:25:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:25:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:25:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:25:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:25:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:25:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:25:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:25:11,231 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:25:11,362 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:25:11,364 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:25:11,713 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:25:11,713 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:25:11,909 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:25:11,910 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:25:11,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:25:11 BoogieIcfgContainer [2024-06-27 18:25:11,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:25:11,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:25:11,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:25:11,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:25:11,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:08" (1/4) ... [2024-06-27 18:25:11,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba7d14 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:25:11, skipping insertion in model container [2024-06-27 18:25:11,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:25:10" (2/4) ... [2024-06-27 18:25:11,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:25:11, skipping insertion in model container [2024-06-27 18:25:11,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:10" (3/4) ... [2024-06-27 18:25:11,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:25:11, skipping insertion in model container [2024-06-27 18:25:11,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:25:11" (4/4) ... [2024-06-27 18:25:11,920 INFO L112 eAbstractionObserver]: Analyzing ICFG mix025_pso.opt_rmo.opt.i [2024-06-27 18:25:11,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:25:11,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:25:11,936 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:25:11,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:25:12,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:25:12,052 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:25:12,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:25:12,056 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 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:25:12,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:25:12,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:25:12,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:25:12,082 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;@60aa922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:25:12,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:25:12,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:25:12,088 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:25:12,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:25:12,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:12,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:25:12,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:12,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 345069058, now seen corresponding path program 1 times [2024-06-27 18:25:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149708375] [2024-06-27 18:25:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149708375] [2024-06-27 18:25:13,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149708375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:13,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:13,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:25:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296160723] [2024-06-27 18:25:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:25:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:25:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:25:13,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:25:13,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:13,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:13,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:25:13,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:14,054 INFO L124 PetriNetUnfolderBase]: 3076/5212 cut-off events. [2024-06-27 18:25:14,054 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 18:25:14,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 5212 events. 3076/5212 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34310 event pairs, 2454 based on Foata normal form. 141/4868 useless extension candidates. Maximal degree in co-relation 9746. Up to 4447 conditions per place. [2024-06-27 18:25:14,095 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:25:14,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-27 18:25:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:25:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:25:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 18:25:14,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-27 18:25:14,109 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-27 18:25:14,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-27 18:25:14,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:14,118 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:25:14,120 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} [2024-06-27 18:25:14,125 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:25:14,126 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:25:14,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:14,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:14,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:14,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:25:14,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:14,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash 899270537, now seen corresponding path program 1 times [2024-06-27 18:25:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023130199] [2024-06-27 18:25:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023130199] [2024-06-27 18:25:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023130199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:14,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:14,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:25:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269105375] [2024-06-27 18:25:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:25:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:25:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:25:14,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:25:14,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:14,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:14,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:25:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:15,607 INFO L124 PetriNetUnfolderBase]: 3676/5500 cut-off events. [2024-06-27 18:25:15,607 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-06-27 18:25:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12175 conditions, 5500 events. 3676/5500 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31515 event pairs, 1374 based on Foata normal form. 6/5278 useless extension candidates. Maximal degree in co-relation 12163. Up to 5240 conditions per place. [2024-06-27 18:25:15,639 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 53 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 18:25:15,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 321 flow [2024-06-27 18:25:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:25:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:25:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 18:25:15,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-06-27 18:25:15,645 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 125 transitions. [2024-06-27 18:25:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 321 flow [2024-06-27 18:25:15,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:15,648 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-27 18:25:15,648 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:25:15,649 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:25:15,650 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-27 18:25:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:15,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:15,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:15,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:25:15,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:15,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2095959179, now seen corresponding path program 1 times [2024-06-27 18:25:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415583441] [2024-06-27 18:25:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415583441] [2024-06-27 18:25:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415583441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:25:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488758006] [2024-06-27 18:25:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:25:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:25:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:25:15,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 18:25:15,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:15,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:15,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 18:25:15,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:15,984 INFO L124 PetriNetUnfolderBase]: 833/1766 cut-off events. [2024-06-27 18:25:15,984 INFO L125 PetriNetUnfolderBase]: For 449/521 co-relation queries the response was YES. [2024-06-27 18:25:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 1766 events. 833/1766 cut-off events. For 449/521 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12354 event pairs, 207 based on Foata normal form. 7/1653 useless extension candidates. Maximal degree in co-relation 3591. Up to 1044 conditions per place. [2024-06-27 18:25:15,995 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-27 18:25:15,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 250 flow [2024-06-27 18:25:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:25:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:25:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 18:25:15,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-27 18:25:15,997 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 3 states and 108 transitions. [2024-06-27 18:25:15,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 250 flow [2024-06-27 18:25:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 236 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:16,000 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 150 flow [2024-06-27 18:25:16,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-27 18:25:16,001 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-06-27 18:25:16,001 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 150 flow [2024-06-27 18:25:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:16,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:16,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:25:16,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:16,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1463385782, now seen corresponding path program 1 times [2024-06-27 18:25:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785933867] [2024-06-27 18:25:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:16,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:17,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:17,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785933867] [2024-06-27 18:25:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785933867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911064421] [2024-06-27 18:25:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:17,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:25:17,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:17,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:17,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:25:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:18,297 INFO L124 PetriNetUnfolderBase]: 3114/5056 cut-off events. [2024-06-27 18:25:18,298 INFO L125 PetriNetUnfolderBase]: For 2498/2498 co-relation queries the response was YES. [2024-06-27 18:25:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 5056 events. 3114/5056 cut-off events. For 2498/2498 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30844 event pairs, 1149 based on Foata normal form. 6/4918 useless extension candidates. Maximal degree in co-relation 11612. Up to 4396 conditions per place. [2024-06-27 18:25:18,354 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2024-06-27 18:25:18,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 432 flow [2024-06-27 18:25:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 18:25:18,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-06-27 18:25:18,356 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 150 flow. Second operand 6 states and 175 transitions. [2024-06-27 18:25:18,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 432 flow [2024-06-27 18:25:18,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:18,359 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 197 flow [2024-06-27 18:25:18,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-27 18:25:18,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-27 18:25:18,360 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 197 flow [2024-06-27 18:25:18,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:18,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:18,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:18,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:25:18,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:18,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -123863746, now seen corresponding path program 1 times [2024-06-27 18:25:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556804813] [2024-06-27 18:25:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:19,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:19,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556804813] [2024-06-27 18:25:19,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556804813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:19,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272740723] [2024-06-27 18:25:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:19,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:19,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:25:19,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:19,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:25:19,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:19,734 INFO L124 PetriNetUnfolderBase]: 2591/4502 cut-off events. [2024-06-27 18:25:19,735 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2024-06-27 18:25:19,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 4502 events. 2591/4502 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28997 event pairs, 1196 based on Foata normal form. 2/4323 useless extension candidates. Maximal degree in co-relation 10764. Up to 3742 conditions per place. [2024-06-27 18:25:19,757 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 55 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:25:19,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 402 flow [2024-06-27 18:25:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:25:19,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:25:19,760 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 197 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:25:19,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 402 flow [2024-06-27 18:25:19,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 369 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:19,764 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 246 flow [2024-06-27 18:25:19,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-27 18:25:19,765 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-27 18:25:19,765 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 246 flow [2024-06-27 18:25:19,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:19,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:25:19,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:19,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 455191939, now seen corresponding path program 1 times [2024-06-27 18:25:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459704793] [2024-06-27 18:25:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:20,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:20,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459704793] [2024-06-27 18:25:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459704793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:20,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:20,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056009167] [2024-06-27 18:25:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:20,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:20,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:20,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:20,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:20,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:21,359 INFO L124 PetriNetUnfolderBase]: 3143/5273 cut-off events. [2024-06-27 18:25:21,360 INFO L125 PetriNetUnfolderBase]: For 5576/5576 co-relation queries the response was YES. [2024-06-27 18:25:21,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13645 conditions, 5273 events. 3143/5273 cut-off events. For 5576/5576 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33482 event pairs, 1417 based on Foata normal form. 3/5126 useless extension candidates. Maximal degree in co-relation 13625. Up to 4449 conditions per place. [2024-06-27 18:25:21,400 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2024-06-27 18:25:21,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 556 flow [2024-06-27 18:25:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:25:21,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-06-27 18:25:21,402 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 246 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:25:21,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 556 flow [2024-06-27 18:25:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 539 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:21,413 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 362 flow [2024-06-27 18:25:21,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-27 18:25:21,416 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:25:21,416 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 362 flow [2024-06-27 18:25:21,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:21,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:21,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:21,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:25:21,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:21,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1220296413, now seen corresponding path program 1 times [2024-06-27 18:25:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:21,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784741196] [2024-06-27 18:25:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:21,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:22,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:22,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784741196] [2024-06-27 18:25:22,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784741196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:22,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:22,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:22,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539820295] [2024-06-27 18:25:22,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:22,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:22,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:22,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:22,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:22,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:23,087 INFO L124 PetriNetUnfolderBase]: 3411/5676 cut-off events. [2024-06-27 18:25:23,088 INFO L125 PetriNetUnfolderBase]: For 10206/10216 co-relation queries the response was YES. [2024-06-27 18:25:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16571 conditions, 5676 events. 3411/5676 cut-off events. For 10206/10216 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 36047 event pairs, 1466 based on Foata normal form. 4/5501 useless extension candidates. Maximal degree in co-relation 16547. Up to 4826 conditions per place. [2024-06-27 18:25:23,125 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-27 18:25:23,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 657 flow [2024-06-27 18:25:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:25:23,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:25:23,127 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 362 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:25:23,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 657 flow [2024-06-27 18:25:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 643 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:23,140 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 444 flow [2024-06-27 18:25:23,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-27 18:25:23,142 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2024-06-27 18:25:23,142 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 444 flow [2024-06-27 18:25:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:23,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:23,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:25:23,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:23,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1226040093, now seen corresponding path program 2 times [2024-06-27 18:25:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079984489] [2024-06-27 18:25:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:23,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:23,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079984489] [2024-06-27 18:25:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079984489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:23,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741273006] [2024-06-27 18:25:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:23,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:23,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:23,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:23,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:23,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:23,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:23,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:24,664 INFO L124 PetriNetUnfolderBase]: 3407/5752 cut-off events. [2024-06-27 18:25:24,664 INFO L125 PetriNetUnfolderBase]: For 13877/13899 co-relation queries the response was YES. [2024-06-27 18:25:24,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17860 conditions, 5752 events. 3407/5752 cut-off events. For 13877/13899 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 36844 event pairs, 1405 based on Foata normal form. 12/5558 useless extension candidates. Maximal degree in co-relation 17832. Up to 4771 conditions per place. [2024-06-27 18:25:24,703 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 76 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-27 18:25:24,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 738 flow [2024-06-27 18:25:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:25:24,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 18:25:24,709 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 444 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:25:24,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 738 flow [2024-06-27 18:25:24,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 701 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:24,722 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 485 flow [2024-06-27 18:25:24,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-27 18:25:24,725 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-27 18:25:24,726 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 485 flow [2024-06-27 18:25:24,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:24,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:24,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:24,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:25:24,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:24,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1226049021, now seen corresponding path program 1 times [2024-06-27 18:25:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598845628] [2024-06-27 18:25:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598845628] [2024-06-27 18:25:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598845628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322666039] [2024-06-27 18:25:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:25,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:25,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:25,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:25,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:25,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:26,496 INFO L124 PetriNetUnfolderBase]: 3231/5540 cut-off events. [2024-06-27 18:25:26,497 INFO L125 PetriNetUnfolderBase]: For 16409/16409 co-relation queries the response was YES. [2024-06-27 18:25:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17994 conditions, 5540 events. 3231/5540 cut-off events. For 16409/16409 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35920 event pairs, 1314 based on Foata normal form. 3/5360 useless extension candidates. Maximal degree in co-relation 17965. Up to 4542 conditions per place. [2024-06-27 18:25:26,541 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 86 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-27 18:25:26,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 859 flow [2024-06-27 18:25:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:25:26,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:25:26,543 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 485 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:25:26,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 859 flow [2024-06-27 18:25:26,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:26,557 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 524 flow [2024-06-27 18:25:26,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 18:25:26,559 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-27 18:25:26,559 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 524 flow [2024-06-27 18:25:26,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:26,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:26,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:25:26,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:26,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash -825637209, now seen corresponding path program 1 times [2024-06-27 18:25:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:26,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298062872] [2024-06-27 18:25:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298062872] [2024-06-27 18:25:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298062872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076072261] [2024-06-27 18:25:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:27,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:27,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 524 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:27,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:27,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:28,417 INFO L124 PetriNetUnfolderBase]: 3504/5803 cut-off events. [2024-06-27 18:25:28,418 INFO L125 PetriNetUnfolderBase]: For 21548/21579 co-relation queries the response was YES. [2024-06-27 18:25:28,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20073 conditions, 5803 events. 3504/5803 cut-off events. For 21548/21579 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36639 event pairs, 1447 based on Foata normal form. 3/5619 useless extension candidates. Maximal degree in co-relation 20043. Up to 4923 conditions per place. [2024-06-27 18:25:28,466 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 95 selfloop transitions, 17 changer transitions 0/126 dead transitions. [2024-06-27 18:25:28,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 896 flow [2024-06-27 18:25:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:25:28,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 18:25:28,468 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 524 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:25:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 896 flow [2024-06-27 18:25:28,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 126 transitions, 833 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:28,485 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 580 flow [2024-06-27 18:25:28,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=580, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2024-06-27 18:25:28,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-27 18:25:28,487 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 580 flow [2024-06-27 18:25:28,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:28,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:28,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:28,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:25:28,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:28,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -825516092, now seen corresponding path program 1 times [2024-06-27 18:25:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916895818] [2024-06-27 18:25:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:28,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:29,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:29,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916895818] [2024-06-27 18:25:29,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916895818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:29,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112094393] [2024-06-27 18:25:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:29,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:29,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:29,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:30,253 INFO L124 PetriNetUnfolderBase]: 3918/6403 cut-off events. [2024-06-27 18:25:30,254 INFO L125 PetriNetUnfolderBase]: For 28347/28347 co-relation queries the response was YES. [2024-06-27 18:25:30,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23288 conditions, 6403 events. 3918/6403 cut-off events. For 28347/28347 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40215 event pairs, 1512 based on Foata normal form. 6/6220 useless extension candidates. Maximal degree in co-relation 23256. Up to 5396 conditions per place. [2024-06-27 18:25:30,316 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 107 selfloop transitions, 26 changer transitions 0/142 dead transitions. [2024-06-27 18:25:30,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 142 transitions, 1112 flow [2024-06-27 18:25:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:25:30,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:25:30,319 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 580 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:25:30,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 142 transitions, 1112 flow [2024-06-27 18:25:30,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1051 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:30,344 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 717 flow [2024-06-27 18:25:30,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2024-06-27 18:25:30,345 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-27 18:25:30,345 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 717 flow [2024-06-27 18:25:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:30,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:30,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:30,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:25:30,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:30,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash -647462012, now seen corresponding path program 2 times [2024-06-27 18:25:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:30,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033703459] [2024-06-27 18:25:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:31,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033703459] [2024-06-27 18:25:31,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033703459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:31,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:31,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421222003] [2024-06-27 18:25:31,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:31,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:31,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:31,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:31,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 717 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:31,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:31,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:31,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:31,907 INFO L124 PetriNetUnfolderBase]: 4085/6709 cut-off events. [2024-06-27 18:25:31,908 INFO L125 PetriNetUnfolderBase]: For 39894/39909 co-relation queries the response was YES. [2024-06-27 18:25:31,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26987 conditions, 6709 events. 4085/6709 cut-off events. For 39894/39909 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 42282 event pairs, 1491 based on Foata normal form. 18/6507 useless extension candidates. Maximal degree in co-relation 26952. Up to 5308 conditions per place. [2024-06-27 18:25:31,951 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 105 selfloop transitions, 38 changer transitions 0/152 dead transitions. [2024-06-27 18:25:31,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 152 transitions, 1325 flow [2024-06-27 18:25:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:25:31,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-27 18:25:31,954 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 717 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:25:31,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 152 transitions, 1325 flow [2024-06-27 18:25:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1267 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:32,002 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 853 flow [2024-06-27 18:25:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=853, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2024-06-27 18:25:32,003 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-27 18:25:32,004 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 853 flow [2024-06-27 18:25:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:32,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:32,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:25:32,005 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:32,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1367789532, now seen corresponding path program 3 times [2024-06-27 18:25:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932692792] [2024-06-27 18:25:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:32,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:32,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932692792] [2024-06-27 18:25:32,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932692792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:32,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:32,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:32,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840097891] [2024-06-27 18:25:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:32,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:32,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:32,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:32,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 853 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:32,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:32,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:32,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:33,649 INFO L124 PetriNetUnfolderBase]: 4113/6746 cut-off events. [2024-06-27 18:25:33,649 INFO L125 PetriNetUnfolderBase]: For 47765/47780 co-relation queries the response was YES. [2024-06-27 18:25:33,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28864 conditions, 6746 events. 4113/6746 cut-off events. For 47765/47780 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 42509 event pairs, 1473 based on Foata normal form. 18/6544 useless extension candidates. Maximal degree in co-relation 28826. Up to 5337 conditions per place. [2024-06-27 18:25:33,685 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 98 selfloop transitions, 46 changer transitions 0/153 dead transitions. [2024-06-27 18:25:33,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1372 flow [2024-06-27 18:25:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:25:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:25:33,686 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 853 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:25:33,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1372 flow [2024-06-27 18:25:33,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 153 transitions, 1251 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:33,744 INFO L231 Difference]: Finished difference. Result has 96 places, 115 transitions, 894 flow [2024-06-27 18:25:33,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=96, PETRI_TRANSITIONS=115} [2024-06-27 18:25:33,745 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-06-27 18:25:33,745 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 115 transitions, 894 flow [2024-06-27 18:25:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:33,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:33,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:25:33,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:33,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -647185182, now seen corresponding path program 1 times [2024-06-27 18:25:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235789470] [2024-06-27 18:25:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235789470] [2024-06-27 18:25:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235789470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:34,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466490661] [2024-06-27 18:25:34,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:34,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:34,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:34,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 115 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:35,671 INFO L124 PetriNetUnfolderBase]: 3623/6042 cut-off events. [2024-06-27 18:25:35,671 INFO L125 PetriNetUnfolderBase]: For 42113/42113 co-relation queries the response was YES. [2024-06-27 18:25:35,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25579 conditions, 6042 events. 3623/6042 cut-off events. For 42113/42113 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38198 event pairs, 1239 based on Foata normal form. 6/5888 useless extension candidates. Maximal degree in co-relation 25540. Up to 4990 conditions per place. [2024-06-27 18:25:35,712 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 128 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-27 18:25:35,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 179 transitions, 1660 flow [2024-06-27 18:25:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:25:35,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:25:35,714 INFO L175 Difference]: Start difference. First operand has 96 places, 115 transitions, 894 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:25:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 179 transitions, 1660 flow [2024-06-27 18:25:35,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 1565 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:35,759 INFO L231 Difference]: Finished difference. Result has 103 places, 134 transitions, 1181 flow [2024-06-27 18:25:35,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=103, PETRI_TRANSITIONS=134} [2024-06-27 18:25:35,760 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-27 18:25:35,760 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 134 transitions, 1181 flow [2024-06-27 18:25:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:35,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:35,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:25:35,761 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:35,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -919501432, now seen corresponding path program 1 times [2024-06-27 18:25:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:35,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988133847] [2024-06-27 18:25:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:35,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:36,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988133847] [2024-06-27 18:25:36,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988133847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:36,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:36,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085723118] [2024-06-27 18:25:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:36,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:36,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:36,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:36,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 134 transitions, 1181 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:37,087 INFO L124 PetriNetUnfolderBase]: 3620/6086 cut-off events. [2024-06-27 18:25:37,087 INFO L125 PetriNetUnfolderBase]: For 49237/49237 co-relation queries the response was YES. [2024-06-27 18:25:37,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26883 conditions, 6086 events. 3620/6086 cut-off events. For 49237/49237 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39207 event pairs, 1368 based on Foata normal form. 1/5910 useless extension candidates. Maximal degree in co-relation 26840. Up to 5174 conditions per place. [2024-06-27 18:25:37,129 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 124 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2024-06-27 18:25:37,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 148 transitions, 1489 flow [2024-06-27 18:25:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 18:25:37,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 18:25:37,130 INFO L175 Difference]: Start difference. First operand has 103 places, 134 transitions, 1181 flow. Second operand 5 states and 118 transitions. [2024-06-27 18:25:37,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 148 transitions, 1489 flow [2024-06-27 18:25:37,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 148 transitions, 1357 flow, removed 65 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:37,185 INFO L231 Difference]: Finished difference. Result has 107 places, 134 transitions, 1087 flow [2024-06-27 18:25:37,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1087, PETRI_PLACES=107, PETRI_TRANSITIONS=134} [2024-06-27 18:25:37,186 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2024-06-27 18:25:37,186 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 134 transitions, 1087 flow [2024-06-27 18:25:37,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:37,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:37,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:25:37,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -664217470, now seen corresponding path program 1 times [2024-06-27 18:25:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974086239] [2024-06-27 18:25:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:38,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974086239] [2024-06-27 18:25:38,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974086239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:38,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:38,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382208348] [2024-06-27 18:25:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:38,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 134 transitions, 1087 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:38,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:38,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:38,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:39,372 INFO L124 PetriNetUnfolderBase]: 4172/6827 cut-off events. [2024-06-27 18:25:39,373 INFO L125 PetriNetUnfolderBase]: For 54199/54199 co-relation queries the response was YES. [2024-06-27 18:25:39,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29203 conditions, 6827 events. 4172/6827 cut-off events. For 54199/54199 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43374 event pairs, 1549 based on Foata normal form. 3/6625 useless extension candidates. Maximal degree in co-relation 29157. Up to 5817 conditions per place. [2024-06-27 18:25:39,428 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 150 selfloop transitions, 33 changer transitions 0/192 dead transitions. [2024-06-27 18:25:39,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 192 transitions, 1807 flow [2024-06-27 18:25:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:25:39,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 18:25:39,430 INFO L175 Difference]: Start difference. First operand has 107 places, 134 transitions, 1087 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:25:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 192 transitions, 1807 flow [2024-06-27 18:25:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 192 transitions, 1768 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:39,474 INFO L231 Difference]: Finished difference. Result has 113 places, 146 transitions, 1298 flow [2024-06-27 18:25:39,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=113, PETRI_TRANSITIONS=146} [2024-06-27 18:25:39,474 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-06-27 18:25:39,475 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 146 transitions, 1298 flow [2024-06-27 18:25:39,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:39,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:39,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:25:39,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:39,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 178805724, now seen corresponding path program 1 times [2024-06-27 18:25:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324860845] [2024-06-27 18:25:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324860845] [2024-06-27 18:25:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324860845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183511070] [2024-06-27 18:25:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:40,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:40,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 146 transitions, 1298 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:40,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:40,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:40,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:41,564 INFO L124 PetriNetUnfolderBase]: 4256/6892 cut-off events. [2024-06-27 18:25:41,565 INFO L125 PetriNetUnfolderBase]: For 66991/66991 co-relation queries the response was YES. [2024-06-27 18:25:41,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31752 conditions, 6892 events. 4256/6892 cut-off events. For 66991/66991 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 43201 event pairs, 1483 based on Foata normal form. 6/6706 useless extension candidates. Maximal degree in co-relation 31704. Up to 5807 conditions per place. [2024-06-27 18:25:41,604 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 157 selfloop transitions, 31 changer transitions 0/197 dead transitions. [2024-06-27 18:25:41,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 197 transitions, 1950 flow [2024-06-27 18:25:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:25:41,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 18:25:41,605 INFO L175 Difference]: Start difference. First operand has 113 places, 146 transitions, 1298 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:25:41,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 197 transitions, 1950 flow [2024-06-27 18:25:41,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 197 transitions, 1849 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:41,660 INFO L231 Difference]: Finished difference. Result has 118 places, 151 transitions, 1345 flow [2024-06-27 18:25:41,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1345, PETRI_PLACES=118, PETRI_TRANSITIONS=151} [2024-06-27 18:25:41,661 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-06-27 18:25:41,661 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 151 transitions, 1345 flow [2024-06-27 18:25:41,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:41,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:41,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:25:41,662 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:41,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1411789118, now seen corresponding path program 2 times [2024-06-27 18:25:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239594772] [2024-06-27 18:25:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:42,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239594772] [2024-06-27 18:25:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239594772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873215334] [2024-06-27 18:25:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:42,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:42,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 151 transitions, 1345 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:42,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:42,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:42,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:43,671 INFO L124 PetriNetUnfolderBase]: 4313/6852 cut-off events. [2024-06-27 18:25:43,671 INFO L125 PetriNetUnfolderBase]: For 74846/74861 co-relation queries the response was YES. [2024-06-27 18:25:43,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33586 conditions, 6852 events. 4313/6852 cut-off events. For 74846/74861 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 41616 event pairs, 1285 based on Foata normal form. 15/6715 useless extension candidates. Maximal degree in co-relation 33536. Up to 5756 conditions per place. [2024-06-27 18:25:43,725 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 159 selfloop transitions, 66 changer transitions 0/234 dead transitions. [2024-06-27 18:25:43,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 234 transitions, 2453 flow [2024-06-27 18:25:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:25:43,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 18:25:43,727 INFO L175 Difference]: Start difference. First operand has 118 places, 151 transitions, 1345 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:25:43,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 234 transitions, 2453 flow [2024-06-27 18:25:43,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 234 transitions, 2330 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:43,803 INFO L231 Difference]: Finished difference. Result has 124 places, 188 transitions, 1938 flow [2024-06-27 18:25:43,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1938, PETRI_PLACES=124, PETRI_TRANSITIONS=188} [2024-06-27 18:25:43,804 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-06-27 18:25:43,804 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 188 transitions, 1938 flow [2024-06-27 18:25:43,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:43,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:43,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:43,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:25:43,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1412085788, now seen corresponding path program 3 times [2024-06-27 18:25:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195824908] [2024-06-27 18:25:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:43,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:44,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:44,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195824908] [2024-06-27 18:25:44,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195824908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:44,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:44,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279665444] [2024-06-27 18:25:44,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:44,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:44,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:44,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:44,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 188 transitions, 1938 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:44,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:44,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:44,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:45,838 INFO L124 PetriNetUnfolderBase]: 4375/6928 cut-off events. [2024-06-27 18:25:45,838 INFO L125 PetriNetUnfolderBase]: For 85983/85998 co-relation queries the response was YES. [2024-06-27 18:25:45,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36261 conditions, 6928 events. 4375/6928 cut-off events. For 85983/85998 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 41926 event pairs, 1285 based on Foata normal form. 15/6791 useless extension candidates. Maximal degree in co-relation 36206. Up to 5708 conditions per place. [2024-06-27 18:25:45,904 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 154 selfloop transitions, 84 changer transitions 0/247 dead transitions. [2024-06-27 18:25:45,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 247 transitions, 2856 flow [2024-06-27 18:25:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:25:45,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:25:45,906 INFO L175 Difference]: Start difference. First operand has 124 places, 188 transitions, 1938 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:25:45,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 247 transitions, 2856 flow [2024-06-27 18:25:46,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 247 transitions, 2706 flow, removed 74 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:46,073 INFO L231 Difference]: Finished difference. Result has 132 places, 199 transitions, 2155 flow [2024-06-27 18:25:46,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2155, PETRI_PLACES=132, PETRI_TRANSITIONS=199} [2024-06-27 18:25:46,073 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 79 predicate places. [2024-06-27 18:25:46,074 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 199 transitions, 2155 flow [2024-06-27 18:25:46,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:46,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:46,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:25:46,074 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:46,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1403514908, now seen corresponding path program 4 times [2024-06-27 18:25:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849332078] [2024-06-27 18:25:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849332078] [2024-06-27 18:25:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849332078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136706415] [2024-06-27 18:25:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:47,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:47,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 199 transitions, 2155 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:47,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:47,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:47,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:48,200 INFO L124 PetriNetUnfolderBase]: 4404/6982 cut-off events. [2024-06-27 18:25:48,200 INFO L125 PetriNetUnfolderBase]: For 88833/88848 co-relation queries the response was YES. [2024-06-27 18:25:48,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37344 conditions, 6982 events. 4404/6982 cut-off events. For 88833/88848 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42454 event pairs, 1287 based on Foata normal form. 15/6844 useless extension candidates. Maximal degree in co-relation 37285. Up to 5869 conditions per place. [2024-06-27 18:25:48,258 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 185 selfloop transitions, 65 changer transitions 0/259 dead transitions. [2024-06-27 18:25:48,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 259 transitions, 3140 flow [2024-06-27 18:25:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:25:48,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 18:25:48,260 INFO L175 Difference]: Start difference. First operand has 132 places, 199 transitions, 2155 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:25:48,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 259 transitions, 3140 flow [2024-06-27 18:25:48,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 259 transitions, 2932 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:48,414 INFO L231 Difference]: Finished difference. Result has 138 places, 211 transitions, 2314 flow [2024-06-27 18:25:48,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2314, PETRI_PLACES=138, PETRI_TRANSITIONS=211} [2024-06-27 18:25:48,414 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2024-06-27 18:25:48,414 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 211 transitions, 2314 flow [2024-06-27 18:25:48,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:48,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:48,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:48,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:25:48,415 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:48,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:48,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1560228715, now seen corresponding path program 1 times [2024-06-27 18:25:48,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:48,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496951720] [2024-06-27 18:25:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:48,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:48,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:48,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496951720] [2024-06-27 18:25:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496951720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:48,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212784743] [2024-06-27 18:25:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:48,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:49,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:49,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 211 transitions, 2314 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:49,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:49,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:49,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:49,988 INFO L124 PetriNetUnfolderBase]: 3875/6196 cut-off events. [2024-06-27 18:25:49,988 INFO L125 PetriNetUnfolderBase]: For 77701/77701 co-relation queries the response was YES. [2024-06-27 18:25:50,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33822 conditions, 6196 events. 3875/6196 cut-off events. For 77701/77701 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 38183 event pairs, 1271 based on Foata normal form. 2/6094 useless extension candidates. Maximal degree in co-relation 33759. Up to 5505 conditions per place. [2024-06-27 18:25:50,043 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 207 selfloop transitions, 17 changer transitions 0/234 dead transitions. [2024-06-27 18:25:50,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 234 transitions, 2846 flow [2024-06-27 18:25:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:25:50,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:25:50,045 INFO L175 Difference]: Start difference. First operand has 138 places, 211 transitions, 2314 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:25:50,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 234 transitions, 2846 flow [2024-06-27 18:25:50,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 234 transitions, 2741 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:50,162 INFO L231 Difference]: Finished difference. Result has 141 places, 214 transitions, 2284 flow [2024-06-27 18:25:50,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2284, PETRI_PLACES=141, PETRI_TRANSITIONS=214} [2024-06-27 18:25:50,163 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-27 18:25:50,163 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 214 transitions, 2284 flow [2024-06-27 18:25:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:50,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:50,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:50,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:25:50,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:50,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash 883941888, now seen corresponding path program 1 times [2024-06-27 18:25:50,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886329230] [2024-06-27 18:25:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886329230] [2024-06-27 18:25:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886329230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:51,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411852967] [2024-06-27 18:25:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:51,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:51,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 214 transitions, 2284 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:51,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:51,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:52,223 INFO L124 PetriNetUnfolderBase]: 4199/6616 cut-off events. [2024-06-27 18:25:52,223 INFO L125 PetriNetUnfolderBase]: For 94941/95009 co-relation queries the response was YES. [2024-06-27 18:25:52,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36787 conditions, 6616 events. 4199/6616 cut-off events. For 94941/95009 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 40736 event pairs, 1009 based on Foata normal form. 36/6518 useless extension candidates. Maximal degree in co-relation 36723. Up to 5662 conditions per place. [2024-06-27 18:25:52,296 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 198 selfloop transitions, 19 changer transitions 0/262 dead transitions. [2024-06-27 18:25:52,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 262 transitions, 2908 flow [2024-06-27 18:25:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:25:52,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:25:52,297 INFO L175 Difference]: Start difference. First operand has 141 places, 214 transitions, 2284 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:25:52,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 262 transitions, 2908 flow [2024-06-27 18:25:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 262 transitions, 2863 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:52,413 INFO L231 Difference]: Finished difference. Result has 146 places, 219 transitions, 2374 flow [2024-06-27 18:25:52,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2374, PETRI_PLACES=146, PETRI_TRANSITIONS=219} [2024-06-27 18:25:52,414 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-27 18:25:52,414 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 219 transitions, 2374 flow [2024-06-27 18:25:52,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:52,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:52,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:52,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:25:52,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:52,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1708529812, now seen corresponding path program 2 times [2024-06-27 18:25:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:52,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571374657] [2024-06-27 18:25:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571374657] [2024-06-27 18:25:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571374657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:53,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126027479] [2024-06-27 18:25:53,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:53,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:53,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 219 transitions, 2374 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:53,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:53,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:53,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:54,575 INFO L124 PetriNetUnfolderBase]: 4228/6639 cut-off events. [2024-06-27 18:25:54,576 INFO L125 PetriNetUnfolderBase]: For 105529/105597 co-relation queries the response was YES. [2024-06-27 18:25:54,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37941 conditions, 6639 events. 4228/6639 cut-off events. For 105529/105597 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 40741 event pairs, 1278 based on Foata normal form. 36/6547 useless extension candidates. Maximal degree in co-relation 37875. Up to 5733 conditions per place. [2024-06-27 18:25:54,642 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 201 selfloop transitions, 19 changer transitions 0/265 dead transitions. [2024-06-27 18:25:54,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 265 transitions, 3004 flow [2024-06-27 18:25:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:25:54,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 18:25:54,643 INFO L175 Difference]: Start difference. First operand has 146 places, 219 transitions, 2374 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:25:54,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 265 transitions, 3004 flow [2024-06-27 18:25:54,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 265 transitions, 2911 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:54,784 INFO L231 Difference]: Finished difference. Result has 149 places, 221 transitions, 2388 flow [2024-06-27 18:25:54,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2388, PETRI_PLACES=149, PETRI_TRANSITIONS=221} [2024-06-27 18:25:54,785 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:25:54,785 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 221 transitions, 2388 flow [2024-06-27 18:25:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:54,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:25:54,786 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:54,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1708535764, now seen corresponding path program 1 times [2024-06-27 18:25:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497800230] [2024-06-27 18:25:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:56,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:56,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497800230] [2024-06-27 18:25:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497800230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:56,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:56,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755210183] [2024-06-27 18:25:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:56,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:56,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 221 transitions, 2388 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:56,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:56,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:56,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:57,466 INFO L124 PetriNetUnfolderBase]: 4511/7011 cut-off events. [2024-06-27 18:25:57,467 INFO L125 PetriNetUnfolderBase]: For 115726/115726 co-relation queries the response was YES. [2024-06-27 18:25:57,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40138 conditions, 7011 events. 4511/7011 cut-off events. For 115726/115726 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 42547 event pairs, 1342 based on Foata normal form. 3/6888 useless extension candidates. Maximal degree in co-relation 40071. Up to 6265 conditions per place. [2024-06-27 18:25:57,517 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 233 selfloop transitions, 37 changer transitions 0/279 dead transitions. [2024-06-27 18:25:57,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 279 transitions, 3310 flow [2024-06-27 18:25:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:25:57,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 18:25:57,519 INFO L175 Difference]: Start difference. First operand has 149 places, 221 transitions, 2388 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:25:57,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 279 transitions, 3310 flow [2024-06-27 18:25:57,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 279 transitions, 3221 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:57,654 INFO L231 Difference]: Finished difference. Result has 152 places, 225 transitions, 2472 flow [2024-06-27 18:25:57,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2472, PETRI_PLACES=152, PETRI_TRANSITIONS=225} [2024-06-27 18:25:57,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-06-27 18:25:57,655 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 225 transitions, 2472 flow [2024-06-27 18:25:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:57,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:25:57,655 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:57,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1247795498, now seen corresponding path program 3 times [2024-06-27 18:25:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126808366] [2024-06-27 18:25:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126808366] [2024-06-27 18:25:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126808366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506985966] [2024-06-27 18:25:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:58,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:58,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 225 transitions, 2472 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:58,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:58,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:58,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:59,809 INFO L124 PetriNetUnfolderBase]: 4307/6763 cut-off events. [2024-06-27 18:25:59,810 INFO L125 PetriNetUnfolderBase]: For 123669/123745 co-relation queries the response was YES. [2024-06-27 18:25:59,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39967 conditions, 6763 events. 4307/6763 cut-off events. For 123669/123745 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41555 event pairs, 1226 based on Foata normal form. 36/6669 useless extension candidates. Maximal degree in co-relation 39899. Up to 5841 conditions per place. [2024-06-27 18:25:59,865 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 208 selfloop transitions, 18 changer transitions 0/272 dead transitions. [2024-06-27 18:25:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 272 transitions, 3145 flow [2024-06-27 18:25:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:25:59,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 18:25:59,867 INFO L175 Difference]: Start difference. First operand has 152 places, 225 transitions, 2472 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:25:59,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 272 transitions, 3145 flow [2024-06-27 18:26:00,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 272 transitions, 3002 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:00,035 INFO L231 Difference]: Finished difference. Result has 154 places, 229 transitions, 2461 flow [2024-06-27 18:26:00,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2461, PETRI_PLACES=154, PETRI_TRANSITIONS=229} [2024-06-27 18:26:00,036 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2024-06-27 18:26:00,036 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 229 transitions, 2461 flow [2024-06-27 18:26:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:00,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:00,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:00,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:26:00,037 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:00,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1248010979, now seen corresponding path program 1 times [2024-06-27 18:26:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884304960] [2024-06-27 18:26:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884304960] [2024-06-27 18:26:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884304960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374555006] [2024-06-27 18:26:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:01,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:01,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 229 transitions, 2461 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:01,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:01,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:01,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:02,449 INFO L124 PetriNetUnfolderBase]: 4924/7620 cut-off events. [2024-06-27 18:26:02,450 INFO L125 PetriNetUnfolderBase]: For 161500/161500 co-relation queries the response was YES. [2024-06-27 18:26:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45815 conditions, 7620 events. 4924/7620 cut-off events. For 161500/161500 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 46661 event pairs, 1352 based on Foata normal form. 36/7534 useless extension candidates. Maximal degree in co-relation 45745. Up to 6347 conditions per place. [2024-06-27 18:26:02,535 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 238 selfloop transitions, 44 changer transitions 0/291 dead transitions. [2024-06-27 18:26:02,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 291 transitions, 3435 flow [2024-06-27 18:26:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 18:26:02,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 18:26:02,536 INFO L175 Difference]: Start difference. First operand has 154 places, 229 transitions, 2461 flow. Second operand 9 states and 227 transitions. [2024-06-27 18:26:02,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 291 transitions, 3435 flow [2024-06-27 18:26:02,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 291 transitions, 3340 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:02,734 INFO L231 Difference]: Finished difference. Result has 158 places, 232 transitions, 2543 flow [2024-06-27 18:26:02,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2543, PETRI_PLACES=158, PETRI_TRANSITIONS=232} [2024-06-27 18:26:02,735 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 18:26:02,735 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 232 transitions, 2543 flow [2024-06-27 18:26:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:02,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:26:02,736 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1248010700, now seen corresponding path program 2 times [2024-06-27 18:26:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573632127] [2024-06-27 18:26:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573632127] [2024-06-27 18:26:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573632127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:03,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:03,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970271560] [2024-06-27 18:26:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:03,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:03,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 232 transitions, 2543 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:03,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:03,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:03,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:05,142 INFO L124 PetriNetUnfolderBase]: 5008/7824 cut-off events. [2024-06-27 18:26:05,142 INFO L125 PetriNetUnfolderBase]: For 162422/162422 co-relation queries the response was YES. [2024-06-27 18:26:05,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47644 conditions, 7824 events. 5008/7824 cut-off events. For 162422/162422 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 48721 event pairs, 1391 based on Foata normal form. 3/7689 useless extension candidates. Maximal degree in co-relation 47573. Up to 6843 conditions per place. [2024-06-27 18:26:05,219 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 243 selfloop transitions, 50 changer transitions 0/302 dead transitions. [2024-06-27 18:26:05,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 302 transitions, 3594 flow [2024-06-27 18:26:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:26:05,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 18:26:05,220 INFO L175 Difference]: Start difference. First operand has 158 places, 232 transitions, 2543 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:26:05,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 302 transitions, 3594 flow [2024-06-27 18:26:05,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 302 transitions, 3484 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:05,590 INFO L231 Difference]: Finished difference. Result has 162 places, 241 transitions, 2708 flow [2024-06-27 18:26:05,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2708, PETRI_PLACES=162, PETRI_TRANSITIONS=241} [2024-06-27 18:26:05,591 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-06-27 18:26:05,591 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 241 transitions, 2708 flow [2024-06-27 18:26:05,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:05,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:05,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:05,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:26:05,592 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:05,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1104146785, now seen corresponding path program 1 times [2024-06-27 18:26:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385941092] [2024-06-27 18:26:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:05,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385941092] [2024-06-27 18:26:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385941092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:06,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203217463] [2024-06-27 18:26:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:06,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:06,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 241 transitions, 2708 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:06,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:06,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:06,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:07,536 INFO L124 PetriNetUnfolderBase]: 5042/7889 cut-off events. [2024-06-27 18:26:07,536 INFO L125 PetriNetUnfolderBase]: For 161888/161888 co-relation queries the response was YES. [2024-06-27 18:26:07,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48384 conditions, 7889 events. 5042/7889 cut-off events. For 161888/161888 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 49474 event pairs, 1445 based on Foata normal form. 2/7746 useless extension candidates. Maximal degree in co-relation 48311. Up to 7110 conditions per place. [2024-06-27 18:26:07,604 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 232 selfloop transitions, 42 changer transitions 0/283 dead transitions. [2024-06-27 18:26:07,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 283 transitions, 3632 flow [2024-06-27 18:26:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:07,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:26:07,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 18:26:07,606 INFO L175 Difference]: Start difference. First operand has 162 places, 241 transitions, 2708 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:26:07,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 283 transitions, 3632 flow [2024-06-27 18:26:07,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 283 transitions, 3437 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:07,830 INFO L231 Difference]: Finished difference. Result has 161 places, 254 transitions, 2845 flow [2024-06-27 18:26:07,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2845, PETRI_PLACES=161, PETRI_TRANSITIONS=254} [2024-06-27 18:26:07,830 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-27 18:26:07,831 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 254 transitions, 2845 flow [2024-06-27 18:26:07,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:07,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:07,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:07,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:26:07,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:07,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash -635546804, now seen corresponding path program 4 times [2024-06-27 18:26:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780261566] [2024-06-27 18:26:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780261566] [2024-06-27 18:26:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780261566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:08,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115755043] [2024-06-27 18:26:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:08,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:08,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 254 transitions, 2845 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:08,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:08,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:08,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:10,053 INFO L124 PetriNetUnfolderBase]: 4809/7852 cut-off events. [2024-06-27 18:26:10,053 INFO L125 PetriNetUnfolderBase]: For 165930/166127 co-relation queries the response was YES. [2024-06-27 18:26:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46788 conditions, 7852 events. 4809/7852 cut-off events. For 165930/166127 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 51260 event pairs, 1215 based on Foata normal form. 38/7653 useless extension candidates. Maximal degree in co-relation 46714. Up to 6470 conditions per place. [2024-06-27 18:26:10,129 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 221 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2024-06-27 18:26:10,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 300 transitions, 3577 flow [2024-06-27 18:26:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:26:10,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:26:10,130 INFO L175 Difference]: Start difference. First operand has 161 places, 254 transitions, 2845 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:26:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 300 transitions, 3577 flow [2024-06-27 18:26:10,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 300 transitions, 3471 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:10,360 INFO L231 Difference]: Finished difference. Result has 167 places, 258 transitions, 2894 flow [2024-06-27 18:26:10,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2894, PETRI_PLACES=167, PETRI_TRANSITIONS=258} [2024-06-27 18:26:10,361 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-27 18:26:10,361 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 258 transitions, 2894 flow [2024-06-27 18:26:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:10,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:10,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:26:10,362 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash 559290019, now seen corresponding path program 2 times [2024-06-27 18:26:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:10,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20385778] [2024-06-27 18:26:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:11,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20385778] [2024-06-27 18:26:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20385778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:11,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:11,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88839487] [2024-06-27 18:26:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:11,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:11,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 258 transitions, 2894 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:11,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:11,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:11,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:12,772 INFO L124 PetriNetUnfolderBase]: 5470/8826 cut-off events. [2024-06-27 18:26:12,772 INFO L125 PetriNetUnfolderBase]: For 218874/218889 co-relation queries the response was YES. [2024-06-27 18:26:12,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54678 conditions, 8826 events. 5470/8826 cut-off events. For 218874/218889 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 57420 event pairs, 1321 based on Foata normal form. 51/8641 useless extension candidates. Maximal degree in co-relation 54602. Up to 6797 conditions per place. [2024-06-27 18:26:12,865 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 251 selfloop transitions, 70 changer transitions 0/330 dead transitions. [2024-06-27 18:26:12,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 330 transitions, 4215 flow [2024-06-27 18:26:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:26:12,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-27 18:26:12,867 INFO L175 Difference]: Start difference. First operand has 167 places, 258 transitions, 2894 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:26:12,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 330 transitions, 4215 flow [2024-06-27 18:26:13,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 330 transitions, 4098 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:13,108 INFO L231 Difference]: Finished difference. Result has 172 places, 269 transitions, 3186 flow [2024-06-27 18:26:13,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3186, PETRI_PLACES=172, PETRI_TRANSITIONS=269} [2024-06-27 18:26:13,109 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-06-27 18:26:13,109 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 269 transitions, 3186 flow [2024-06-27 18:26:13,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:13,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:13,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:13,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:26:13,110 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:13,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 824987020, now seen corresponding path program 3 times [2024-06-27 18:26:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014994082] [2024-06-27 18:26:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:14,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014994082] [2024-06-27 18:26:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014994082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:14,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:14,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019802689] [2024-06-27 18:26:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:14,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:14,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 269 transitions, 3186 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:14,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:14,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:14,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:16,010 INFO L124 PetriNetUnfolderBase]: 5605/9082 cut-off events. [2024-06-27 18:26:16,011 INFO L125 PetriNetUnfolderBase]: For 238415/238430 co-relation queries the response was YES. [2024-06-27 18:26:16,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58786 conditions, 9082 events. 5605/9082 cut-off events. For 238415/238430 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 59756 event pairs, 1323 based on Foata normal form. 15/8850 useless extension candidates. Maximal degree in co-relation 58708. Up to 7128 conditions per place. [2024-06-27 18:26:16,108 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 243 selfloop transitions, 112 changer transitions 0/364 dead transitions. [2024-06-27 18:26:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 364 transitions, 4959 flow [2024-06-27 18:26:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:26:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:26:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-27 18:26:16,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377176015473888 [2024-06-27 18:26:16,109 INFO L175 Difference]: Start difference. First operand has 172 places, 269 transitions, 3186 flow. Second operand 11 states and 278 transitions. [2024-06-27 18:26:16,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 364 transitions, 4959 flow [2024-06-27 18:26:16,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 364 transitions, 4759 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:16,522 INFO L231 Difference]: Finished difference. Result has 180 places, 290 transitions, 3686 flow [2024-06-27 18:26:16,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3686, PETRI_PLACES=180, PETRI_TRANSITIONS=290} [2024-06-27 18:26:16,522 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-06-27 18:26:16,522 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 290 transitions, 3686 flow [2024-06-27 18:26:16,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:16,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:16,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:16,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:26:16,523 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:16,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 559289740, now seen corresponding path program 4 times [2024-06-27 18:26:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482182410] [2024-06-27 18:26:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:17,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482182410] [2024-06-27 18:26:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482182410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:17,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:17,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987796477] [2024-06-27 18:26:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:17,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:17,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:17,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:17,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 290 transitions, 3686 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:17,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:19,276 INFO L124 PetriNetUnfolderBase]: 5649/8766 cut-off events. [2024-06-27 18:26:19,276 INFO L125 PetriNetUnfolderBase]: For 236310/236310 co-relation queries the response was YES. [2024-06-27 18:26:19,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59980 conditions, 8766 events. 5649/8766 cut-off events. For 236310/236310 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 54381 event pairs, 1145 based on Foata normal form. 3/8638 useless extension candidates. Maximal degree in co-relation 59898. Up to 7173 conditions per place. [2024-06-27 18:26:19,371 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 220 selfloop transitions, 137 changer transitions 0/366 dead transitions. [2024-06-27 18:26:19,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 366 transitions, 5468 flow [2024-06-27 18:26:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:26:19,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 18:26:19,372 INFO L175 Difference]: Start difference. First operand has 180 places, 290 transitions, 3686 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:26:19,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 366 transitions, 5468 flow [2024-06-27 18:26:19,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 366 transitions, 5158 flow, removed 103 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:19,944 INFO L231 Difference]: Finished difference. Result has 186 places, 309 transitions, 4277 flow [2024-06-27 18:26:19,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4277, PETRI_PLACES=186, PETRI_TRANSITIONS=309} [2024-06-27 18:26:19,944 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-06-27 18:26:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 309 transitions, 4277 flow [2024-06-27 18:26:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:19,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:19,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:26:19,945 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 824987299, now seen corresponding path program 3 times [2024-06-27 18:26:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305333232] [2024-06-27 18:26:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305333232] [2024-06-27 18:26:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305333232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:20,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796468444] [2024-06-27 18:26:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:20,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:20,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 309 transitions, 4277 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:20,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:20,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:20,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:22,577 INFO L124 PetriNetUnfolderBase]: 6019/9732 cut-off events. [2024-06-27 18:26:22,578 INFO L125 PetriNetUnfolderBase]: For 307940/307955 co-relation queries the response was YES. [2024-06-27 18:26:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67825 conditions, 9732 events. 6019/9732 cut-off events. For 307940/307955 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 64757 event pairs, 1372 based on Foata normal form. 51/9530 useless extension candidates. Maximal degree in co-relation 67739. Up to 7399 conditions per place. [2024-06-27 18:26:22,686 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 266 selfloop transitions, 104 changer transitions 0/379 dead transitions. [2024-06-27 18:26:22,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 379 transitions, 5568 flow [2024-06-27 18:26:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:26:22,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 18:26:22,688 INFO L175 Difference]: Start difference. First operand has 186 places, 309 transitions, 4277 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:26:22,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 379 transitions, 5568 flow [2024-06-27 18:26:23,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 379 transitions, 5109 flow, removed 212 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:23,632 INFO L231 Difference]: Finished difference. Result has 195 places, 312 transitions, 4167 flow [2024-06-27 18:26:23,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4167, PETRI_PLACES=195, PETRI_TRANSITIONS=312} [2024-06-27 18:26:23,633 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-06-27 18:26:23,633 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 312 transitions, 4167 flow [2024-06-27 18:26:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:23,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:23,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:26:23,633 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:23,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash -369307613, now seen corresponding path program 4 times [2024-06-27 18:26:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220054639] [2024-06-27 18:26:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220054639] [2024-06-27 18:26:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220054639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:24,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909465727] [2024-06-27 18:26:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:24,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:24,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:24,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 312 transitions, 4167 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:24,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:24,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:24,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:26,393 INFO L124 PetriNetUnfolderBase]: 6066/9429 cut-off events. [2024-06-27 18:26:26,393 INFO L125 PetriNetUnfolderBase]: For 307903/307918 co-relation queries the response was YES. [2024-06-27 18:26:26,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69265 conditions, 9429 events. 6066/9429 cut-off events. For 307903/307918 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 60288 event pairs, 1261 based on Foata normal form. 18/9298 useless extension candidates. Maximal degree in co-relation 69176. Up to 6432 conditions per place. [2024-06-27 18:26:26,494 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 255 selfloop transitions, 114 changer transitions 0/378 dead transitions. [2024-06-27 18:26:26,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 378 transitions, 5455 flow [2024-06-27 18:26:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:26:26,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 18:26:26,495 INFO L175 Difference]: Start difference. First operand has 195 places, 312 transitions, 4167 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:26:26,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 378 transitions, 5455 flow [2024-06-27 18:26:27,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 378 transitions, 5213 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:26:27,063 INFO L231 Difference]: Finished difference. Result has 197 places, 318 transitions, 4325 flow [2024-06-27 18:26:27,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4325, PETRI_PLACES=197, PETRI_TRANSITIONS=318} [2024-06-27 18:26:27,063 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-27 18:26:27,063 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 318 transitions, 4325 flow [2024-06-27 18:26:27,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:27,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:27,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:27,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:26:27,064 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:27,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1122437095, now seen corresponding path program 2 times [2024-06-27 18:26:27,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:27,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038761409] [2024-06-27 18:26:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:27,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:27,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038761409] [2024-06-27 18:26:27,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038761409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:27,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:27,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:27,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007943542] [2024-06-27 18:26:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:27,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:27,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 318 transitions, 4325 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:27,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:27,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:27,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:29,346 INFO L124 PetriNetUnfolderBase]: 6060/9613 cut-off events. [2024-06-27 18:26:29,346 INFO L125 PetriNetUnfolderBase]: For 300834/300834 co-relation queries the response was YES. [2024-06-27 18:26:29,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69770 conditions, 9613 events. 6060/9613 cut-off events. For 300834/300834 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 63419 event pairs, 1643 based on Foata normal form. 2/9419 useless extension candidates. Maximal degree in co-relation 69679. Up to 8622 conditions per place. [2024-06-27 18:26:29,458 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 289 selfloop transitions, 42 changer transitions 0/340 dead transitions. [2024-06-27 18:26:29,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 340 transitions, 5075 flow [2024-06-27 18:26:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:26:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:26:29,459 INFO L175 Difference]: Start difference. First operand has 197 places, 318 transitions, 4325 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:26:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 340 transitions, 5075 flow [2024-06-27 18:26:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 340 transitions, 4716 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:30,040 INFO L231 Difference]: Finished difference. Result has 197 places, 318 transitions, 4070 flow [2024-06-27 18:26:30,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4070, PETRI_PLACES=197, PETRI_TRANSITIONS=318} [2024-06-27 18:26:30,041 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-27 18:26:30,041 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 318 transitions, 4070 flow [2024-06-27 18:26:30,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:30,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:30,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:30,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:26:30,041 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:30,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash 577925288, now seen corresponding path program 1 times [2024-06-27 18:26:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643627496] [2024-06-27 18:26:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:30,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643627496] [2024-06-27 18:26:30,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643627496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:30,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:30,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338300429] [2024-06-27 18:26:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:30,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:30,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:30,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:30,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 318 transitions, 4070 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:30,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:30,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:30,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:32,114 INFO L124 PetriNetUnfolderBase]: 5554/9179 cut-off events. [2024-06-27 18:26:32,115 INFO L125 PetriNetUnfolderBase]: For 261145/261145 co-relation queries the response was YES. [2024-06-27 18:26:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63398 conditions, 9179 events. 5554/9179 cut-off events. For 261145/261145 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 63057 event pairs, 1340 based on Foata normal form. 2/8944 useless extension candidates. Maximal degree in co-relation 63306. Up to 7932 conditions per place. [2024-06-27 18:26:32,222 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 313 selfloop transitions, 21 changer transitions 0/344 dead transitions. [2024-06-27 18:26:32,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 344 transitions, 4945 flow [2024-06-27 18:26:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:26:32,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 18:26:32,223 INFO L175 Difference]: Start difference. First operand has 197 places, 318 transitions, 4070 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:26:32,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 344 transitions, 4945 flow [2024-06-27 18:26:32,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 344 transitions, 4829 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:32,642 INFO L231 Difference]: Finished difference. Result has 198 places, 321 transitions, 4061 flow [2024-06-27 18:26:32,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3954, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4061, PETRI_PLACES=198, PETRI_TRANSITIONS=321} [2024-06-27 18:26:32,643 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 18:26:32,643 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 321 transitions, 4061 flow [2024-06-27 18:26:32,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:32,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:32,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:26:32,643 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1122443078, now seen corresponding path program 2 times [2024-06-27 18:26:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793770829] [2024-06-27 18:26:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:33,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793770829] [2024-06-27 18:26:33,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793770829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:33,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:33,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568080424] [2024-06-27 18:26:33,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:33,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:33,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:33,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 321 transitions, 4061 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:33,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:33,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:33,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:34,809 INFO L124 PetriNetUnfolderBase]: 5513/8960 cut-off events. [2024-06-27 18:26:34,809 INFO L125 PetriNetUnfolderBase]: For 264449/264449 co-relation queries the response was YES. [2024-06-27 18:26:34,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62796 conditions, 8960 events. 5513/8960 cut-off events. For 264449/264449 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 60246 event pairs, 1456 based on Foata normal form. 1/8784 useless extension candidates. Maximal degree in co-relation 62703. Up to 7939 conditions per place. [2024-06-27 18:26:34,921 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 315 selfloop transitions, 13 changer transitions 0/338 dead transitions. [2024-06-27 18:26:34,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 338 transitions, 4769 flow [2024-06-27 18:26:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:26:34,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-27 18:26:34,923 INFO L175 Difference]: Start difference. First operand has 198 places, 321 transitions, 4061 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:26:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 338 transitions, 4769 flow [2024-06-27 18:26:35,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 338 transitions, 4702 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:35,445 INFO L231 Difference]: Finished difference. Result has 201 places, 321 transitions, 4026 flow [2024-06-27 18:26:35,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4026, PETRI_PLACES=201, PETRI_TRANSITIONS=321} [2024-06-27 18:26:35,446 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-27 18:26:35,446 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 321 transitions, 4026 flow [2024-06-27 18:26:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:35,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:35,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:35,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:26:35,447 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:35,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 630702619, now seen corresponding path program 1 times [2024-06-27 18:26:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194611625] [2024-06-27 18:26:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194611625] [2024-06-27 18:26:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194611625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:36,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950787918] [2024-06-27 18:26:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:36,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:36,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 321 transitions, 4026 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:36,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:36,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:36,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:38,357 INFO L124 PetriNetUnfolderBase]: 6167/9797 cut-off events. [2024-06-27 18:26:38,358 INFO L125 PetriNetUnfolderBase]: For 318560/318560 co-relation queries the response was YES. [2024-06-27 18:26:38,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69830 conditions, 9797 events. 6167/9797 cut-off events. For 318560/318560 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 64543 event pairs, 1252 based on Foata normal form. 6/9603 useless extension candidates. Maximal degree in co-relation 69736. Up to 8549 conditions per place. [2024-06-27 18:26:38,487 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 335 selfloop transitions, 40 changer transitions 0/384 dead transitions. [2024-06-27 18:26:38,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 384 transitions, 5334 flow [2024-06-27 18:26:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:38,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:26:38,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 18:26:38,489 INFO L175 Difference]: Start difference. First operand has 201 places, 321 transitions, 4026 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:26:38,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 384 transitions, 5334 flow [2024-06-27 18:26:39,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 384 transitions, 5278 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:39,230 INFO L231 Difference]: Finished difference. Result has 206 places, 330 transitions, 4338 flow [2024-06-27 18:26:39,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4338, PETRI_PLACES=206, PETRI_TRANSITIONS=330} [2024-06-27 18:26:39,231 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2024-06-27 18:26:39,231 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 330 transitions, 4338 flow [2024-06-27 18:26:39,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:39,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:39,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:39,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:26:39,232 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:39,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 632605399, now seen corresponding path program 2 times [2024-06-27 18:26:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017380197] [2024-06-27 18:26:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:40,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017380197] [2024-06-27 18:26:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017380197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853367245] [2024-06-27 18:26:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:40,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:40,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 330 transitions, 4338 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:40,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:40,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:40,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:42,022 INFO L124 PetriNetUnfolderBase]: 6346/10020 cut-off events. [2024-06-27 18:26:42,022 INFO L125 PetriNetUnfolderBase]: For 361845/361845 co-relation queries the response was YES. [2024-06-27 18:26:42,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74638 conditions, 10020 events. 6346/10020 cut-off events. For 361845/361845 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 66006 event pairs, 1595 based on Foata normal form. 6/9836 useless extension candidates. Maximal degree in co-relation 74542. Up to 8741 conditions per place. [2024-06-27 18:26:42,159 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 342 selfloop transitions, 42 changer transitions 0/393 dead transitions. [2024-06-27 18:26:42,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 393 transitions, 5768 flow [2024-06-27 18:26:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:26:42,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 18:26:42,161 INFO L175 Difference]: Start difference. First operand has 206 places, 330 transitions, 4338 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:26:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 393 transitions, 5768 flow [2024-06-27 18:26:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 393 transitions, 5555 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:42,956 INFO L231 Difference]: Finished difference. Result has 212 places, 336 transitions, 4430 flow [2024-06-27 18:26:42,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4125, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4430, PETRI_PLACES=212, PETRI_TRANSITIONS=336} [2024-06-27 18:26:42,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-27 18:26:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 336 transitions, 4430 flow [2024-06-27 18:26:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:26:42,957 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 720368569, now seen corresponding path program 3 times [2024-06-27 18:26:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117922908] [2024-06-27 18:26:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:43,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117922908] [2024-06-27 18:26:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117922908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:43,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194982123] [2024-06-27 18:26:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:43,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:43,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 336 transitions, 4430 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:43,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:43,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:43,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:45,754 INFO L124 PetriNetUnfolderBase]: 6369/10064 cut-off events. [2024-06-27 18:26:45,754 INFO L125 PetriNetUnfolderBase]: For 370865/370865 co-relation queries the response was YES. [2024-06-27 18:26:45,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75005 conditions, 10064 events. 6369/10064 cut-off events. For 370865/370865 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 66478 event pairs, 1622 based on Foata normal form. 6/9877 useless extension candidates. Maximal degree in co-relation 74906. Up to 8961 conditions per place. [2024-06-27 18:26:45,879 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 342 selfloop transitions, 41 changer transitions 0/392 dead transitions. [2024-06-27 18:26:45,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 392 transitions, 5572 flow [2024-06-27 18:26:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:26:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 18:26:45,881 INFO L175 Difference]: Start difference. First operand has 212 places, 336 transitions, 4430 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:26:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 392 transitions, 5572 flow [2024-06-27 18:26:46,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 392 transitions, 5371 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:46,718 INFO L231 Difference]: Finished difference. Result has 216 places, 339 transitions, 4449 flow [2024-06-27 18:26:46,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4449, PETRI_PLACES=216, PETRI_TRANSITIONS=339} [2024-06-27 18:26:46,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-06-27 18:26:46,719 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 339 transitions, 4449 flow [2024-06-27 18:26:46,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:46,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:46,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:46,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:26:46,720 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:46,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash 720375513, now seen corresponding path program 1 times [2024-06-27 18:26:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302997226] [2024-06-27 18:26:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:46,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302997226] [2024-06-27 18:26:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302997226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808819022] [2024-06-27 18:26:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:47,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:47,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:47,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 339 transitions, 4449 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:47,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:47,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:47,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:49,907 INFO L124 PetriNetUnfolderBase]: 6659/10565 cut-off events. [2024-06-27 18:26:49,907 INFO L125 PetriNetUnfolderBase]: For 430555/430555 co-relation queries the response was YES. [2024-06-27 18:26:49,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79483 conditions, 10565 events. 6659/10565 cut-off events. For 430555/430555 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 70733 event pairs, 1650 based on Foata normal form. 24/10383 useless extension candidates. Maximal degree in co-relation 79382. Up to 9091 conditions per place. [2024-06-27 18:26:50,054 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 355 selfloop transitions, 64 changer transitions 0/428 dead transitions. [2024-06-27 18:26:50,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 428 transitions, 6293 flow [2024-06-27 18:26:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:26:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:26:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 18:26:50,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:26:50,056 INFO L175 Difference]: Start difference. First operand has 216 places, 339 transitions, 4449 flow. Second operand 11 states and 264 transitions. [2024-06-27 18:26:50,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 428 transitions, 6293 flow [2024-06-27 18:26:50,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 428 transitions, 6121 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:50,836 INFO L231 Difference]: Finished difference. Result has 223 places, 362 transitions, 5145 flow [2024-06-27 18:26:50,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5145, PETRI_PLACES=223, PETRI_TRANSITIONS=362} [2024-06-27 18:26:50,837 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 170 predicate places. [2024-06-27 18:26:50,837 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 362 transitions, 5145 flow [2024-06-27 18:26:50,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:50,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:50,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:50,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:26:50,838 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:50,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1803213271, now seen corresponding path program 4 times [2024-06-27 18:26:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411872369] [2024-06-27 18:26:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411872369] [2024-06-27 18:26:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411872369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:51,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377497337] [2024-06-27 18:26:51,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:51,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:51,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:51,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 362 transitions, 5145 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:51,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:51,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:51,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:53,901 INFO L124 PetriNetUnfolderBase]: 6793/10721 cut-off events. [2024-06-27 18:26:53,901 INFO L125 PetriNetUnfolderBase]: For 449959/449959 co-relation queries the response was YES. [2024-06-27 18:26:53,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83028 conditions, 10721 events. 6793/10721 cut-off events. For 449959/449959 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 71403 event pairs, 1693 based on Foata normal form. 6/10532 useless extension candidates. Maximal degree in co-relation 82923. Up to 9299 conditions per place. [2024-06-27 18:26:54,047 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 374 selfloop transitions, 43 changer transitions 0/426 dead transitions. [2024-06-27 18:26:54,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 426 transitions, 6700 flow [2024-06-27 18:26:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:26:54,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 18:26:54,049 INFO L175 Difference]: Start difference. First operand has 223 places, 362 transitions, 5145 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:26:54,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 426 transitions, 6700 flow [2024-06-27 18:26:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 426 transitions, 6247 flow, removed 210 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:55,161 INFO L231 Difference]: Finished difference. Result has 230 places, 370 transitions, 5072 flow [2024-06-27 18:26:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4694, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5072, PETRI_PLACES=230, PETRI_TRANSITIONS=370} [2024-06-27 18:26:55,162 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-27 18:26:55,162 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 370 transitions, 5072 flow [2024-06-27 18:26:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:55,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:26:55,163 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:55,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash 33626867, now seen corresponding path program 2 times [2024-06-27 18:26:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430511241] [2024-06-27 18:26:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:56,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430511241] [2024-06-27 18:26:56,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430511241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:56,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:56,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:56,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967698286] [2024-06-27 18:26:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:56,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:56,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:56,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 370 transitions, 5072 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:56,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:56,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:56,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:58,604 INFO L124 PetriNetUnfolderBase]: 7058/11238 cut-off events. [2024-06-27 18:26:58,604 INFO L125 PetriNetUnfolderBase]: For 493763/493763 co-relation queries the response was YES. [2024-06-27 18:26:58,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87447 conditions, 11238 events. 7058/11238 cut-off events. For 493763/493763 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 76169 event pairs, 1692 based on Foata normal form. 24/11044 useless extension candidates. Maximal degree in co-relation 87338. Up to 9295 conditions per place. [2024-06-27 18:26:58,761 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 310 selfloop transitions, 133 changer transitions 0/452 dead transitions. [2024-06-27 18:26:58,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 452 transitions, 7060 flow [2024-06-27 18:26:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:26:58,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 18:26:58,763 INFO L175 Difference]: Start difference. First operand has 230 places, 370 transitions, 5072 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:26:58,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 452 transitions, 7060 flow [2024-06-27 18:26:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 452 transitions, 6869 flow, removed 85 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:59,883 INFO L231 Difference]: Finished difference. Result has 240 places, 386 transitions, 5969 flow [2024-06-27 18:26:59,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4881, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5969, PETRI_PLACES=240, PETRI_TRANSITIONS=386} [2024-06-27 18:26:59,884 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-27 18:26:59,884 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 386 transitions, 5969 flow [2024-06-27 18:26:59,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:59,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:59,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:59,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:26:59,885 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:59,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 188448903, now seen corresponding path program 3 times [2024-06-27 18:26:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:59,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997668414] [2024-06-27 18:26:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997668414] [2024-06-27 18:27:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997668414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:00,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875756200] [2024-06-27 18:27:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:00,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:00,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 386 transitions, 5969 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:00,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:00,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:00,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:03,487 INFO L124 PetriNetUnfolderBase]: 7474/11884 cut-off events. [2024-06-27 18:27:03,488 INFO L125 PetriNetUnfolderBase]: For 571559/571559 co-relation queries the response was YES. [2024-06-27 18:27:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96515 conditions, 11884 events. 7474/11884 cut-off events. For 571559/571559 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 81274 event pairs, 1683 based on Foata normal form. 18/11694 useless extension candidates. Maximal degree in co-relation 96401. Up to 8979 conditions per place. [2024-06-27 18:27:03,664 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 312 selfloop transitions, 141 changer transitions 0/462 dead transitions. [2024-06-27 18:27:03,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 462 transitions, 7627 flow [2024-06-27 18:27:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:27:03,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 18:27:03,666 INFO L175 Difference]: Start difference. First operand has 240 places, 386 transitions, 5969 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:27:03,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 462 transitions, 7627 flow [2024-06-27 18:27:05,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 462 transitions, 6953 flow, removed 245 selfloop flow, removed 8 redundant places. [2024-06-27 18:27:05,329 INFO L231 Difference]: Finished difference. Result has 243 places, 393 transitions, 5927 flow [2024-06-27 18:27:05,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5927, PETRI_PLACES=243, PETRI_TRANSITIONS=393} [2024-06-27 18:27:05,330 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 18:27:05,330 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 393 transitions, 5927 flow [2024-06-27 18:27:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:05,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:05,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:27:05,331 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 359169166, now seen corresponding path program 1 times [2024-06-27 18:27:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309207896] [2024-06-27 18:27:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309207896] [2024-06-27 18:27:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309207896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824740086] [2024-06-27 18:27:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:05,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:05,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 393 transitions, 5927 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:05,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:05,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:05,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:08,378 INFO L124 PetriNetUnfolderBase]: 7508/12023 cut-off events. [2024-06-27 18:27:08,378 INFO L125 PetriNetUnfolderBase]: For 534905/534905 co-relation queries the response was YES. [2024-06-27 18:27:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96341 conditions, 12023 events. 7508/12023 cut-off events. For 534905/534905 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 83050 event pairs, 1990 based on Foata normal form. 2/11786 useless extension candidates. Maximal degree in co-relation 96228. Up to 10707 conditions per place. [2024-06-27 18:27:08,569 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 379 selfloop transitions, 52 changer transitions 0/440 dead transitions. [2024-06-27 18:27:08,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 440 transitions, 7218 flow [2024-06-27 18:27:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:27:08,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:27:08,571 INFO L175 Difference]: Start difference. First operand has 243 places, 393 transitions, 5927 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:27:08,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 440 transitions, 7218 flow [2024-06-27 18:27:10,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 440 transitions, 6860 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:10,098 INFO L231 Difference]: Finished difference. Result has 245 places, 402 transitions, 5833 flow [2024-06-27 18:27:10,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5573, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5833, PETRI_PLACES=245, PETRI_TRANSITIONS=402} [2024-06-27 18:27:10,099 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 18:27:10,099 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 402 transitions, 5833 flow [2024-06-27 18:27:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:10,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:10,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:10,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:27:10,100 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:10,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1864664915, now seen corresponding path program 5 times [2024-06-27 18:27:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571419248] [2024-06-27 18:27:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:10,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:11,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571419248] [2024-06-27 18:27:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571419248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:11,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196867075] [2024-06-27 18:27:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:11,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:11,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 402 transitions, 5833 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:11,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:13,682 INFO L124 PetriNetUnfolderBase]: 7555/12094 cut-off events. [2024-06-27 18:27:13,682 INFO L125 PetriNetUnfolderBase]: For 487953/487968 co-relation queries the response was YES. [2024-06-27 18:27:13,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93966 conditions, 12094 events. 7555/12094 cut-off events. For 487953/487968 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 83638 event pairs, 1750 based on Foata normal form. 18/11835 useless extension candidates. Maximal degree in co-relation 93850. Up to 10077 conditions per place. [2024-06-27 18:27:13,846 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 392 selfloop transitions, 68 changer transitions 0/469 dead transitions. [2024-06-27 18:27:13,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 469 transitions, 7687 flow [2024-06-27 18:27:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:27:13,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 18:27:13,847 INFO L175 Difference]: Start difference. First operand has 245 places, 402 transitions, 5833 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:27:13,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 469 transitions, 7687 flow [2024-06-27 18:27:15,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 469 transitions, 7626 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:15,234 INFO L231 Difference]: Finished difference. Result has 254 places, 412 transitions, 6261 flow [2024-06-27 18:27:15,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5772, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6261, PETRI_PLACES=254, PETRI_TRANSITIONS=412} [2024-06-27 18:27:15,235 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-06-27 18:27:15,235 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 412 transitions, 6261 flow [2024-06-27 18:27:15,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:15,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:15,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:15,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:27:15,236 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:15,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash -185077625, now seen corresponding path program 4 times [2024-06-27 18:27:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527624319] [2024-06-27 18:27:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:16,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:16,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527624319] [2024-06-27 18:27:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527624319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750750855] [2024-06-27 18:27:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:16,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 412 transitions, 6261 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:16,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:16,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:19,029 INFO L124 PetriNetUnfolderBase]: 8055/12544 cut-off events. [2024-06-27 18:27:19,029 INFO L125 PetriNetUnfolderBase]: For 614748/614763 co-relation queries the response was YES. [2024-06-27 18:27:19,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105327 conditions, 12544 events. 8055/12544 cut-off events. For 614748/614763 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 84548 event pairs, 1628 based on Foata normal form. 30/12418 useless extension candidates. Maximal degree in co-relation 105206. Up to 8001 conditions per place. [2024-06-27 18:27:19,226 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 347 selfloop transitions, 134 changer transitions 0/490 dead transitions. [2024-06-27 18:27:19,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 490 transitions, 8193 flow [2024-06-27 18:27:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:27:19,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 18:27:19,227 INFO L175 Difference]: Start difference. First operand has 254 places, 412 transitions, 6261 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:27:19,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 490 transitions, 8193 flow [2024-06-27 18:27:21,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 490 transitions, 7952 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:21,115 INFO L231 Difference]: Finished difference. Result has 262 places, 420 transitions, 6698 flow [2024-06-27 18:27:21,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6698, PETRI_PLACES=262, PETRI_TRANSITIONS=420} [2024-06-27 18:27:21,115 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-06-27 18:27:21,116 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 420 transitions, 6698 flow [2024-06-27 18:27:21,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:21,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:21,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:21,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:27:21,116 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:21,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -195205325, now seen corresponding path program 5 times [2024-06-27 18:27:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48021424] [2024-06-27 18:27:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48021424] [2024-06-27 18:27:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48021424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:22,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855926741] [2024-06-27 18:27:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:22,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:22,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:22,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 420 transitions, 6698 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:22,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:22,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:22,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:25,508 INFO L124 PetriNetUnfolderBase]: 8285/13323 cut-off events. [2024-06-27 18:27:25,508 INFO L125 PetriNetUnfolderBase]: For 678588/678603 co-relation queries the response was YES. [2024-06-27 18:27:25,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111952 conditions, 13323 events. 8285/13323 cut-off events. For 678588/678603 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 94290 event pairs, 1956 based on Foata normal form. 36/13062 useless extension candidates. Maximal degree in co-relation 111828. Up to 10836 conditions per place. [2024-06-27 18:27:25,719 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 374 selfloop transitions, 119 changer transitions 0/502 dead transitions. [2024-06-27 18:27:25,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 502 transitions, 8306 flow [2024-06-27 18:27:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:27:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:27:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 300 transitions. [2024-06-27 18:27:25,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:27:25,720 INFO L175 Difference]: Start difference. First operand has 262 places, 420 transitions, 6698 flow. Second operand 12 states and 300 transitions. [2024-06-27 18:27:25,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 502 transitions, 8306 flow [2024-06-27 18:27:28,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 502 transitions, 8060 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:28,588 INFO L231 Difference]: Finished difference. Result has 268 places, 424 transitions, 6878 flow [2024-06-27 18:27:28,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6460, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6878, PETRI_PLACES=268, PETRI_TRANSITIONS=424} [2024-06-27 18:27:28,590 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 215 predicate places. [2024-06-27 18:27:28,590 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 424 transitions, 6878 flow [2024-06-27 18:27:28,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:28,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:28,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:28,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:27:28,591 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:28,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -480296825, now seen corresponding path program 6 times [2024-06-27 18:27:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:28,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623124816] [2024-06-27 18:27:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623124816] [2024-06-27 18:27:29,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623124816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:29,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:29,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763782281] [2024-06-27 18:27:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:29,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:29,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:29,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 424 transitions, 6878 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:29,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:29,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:29,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:33,628 INFO L124 PetriNetUnfolderBase]: 8785/14126 cut-off events. [2024-06-27 18:27:33,628 INFO L125 PetriNetUnfolderBase]: For 727755/727770 co-relation queries the response was YES. [2024-06-27 18:27:33,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120569 conditions, 14126 events. 8785/14126 cut-off events. For 727755/727770 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 100897 event pairs, 2001 based on Foata normal form. 30/13850 useless extension candidates. Maximal degree in co-relation 120443. Up to 11269 conditions per place. [2024-06-27 18:27:33,830 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 400 selfloop transitions, 91 changer transitions 0/500 dead transitions. [2024-06-27 18:27:33,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 500 transitions, 8652 flow [2024-06-27 18:27:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:27:33,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 18:27:33,832 INFO L175 Difference]: Start difference. First operand has 268 places, 424 transitions, 6878 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:27:33,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 500 transitions, 8652 flow [2024-06-27 18:27:35,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 500 transitions, 8317 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:35,950 INFO L231 Difference]: Finished difference. Result has 271 places, 435 transitions, 7146 flow [2024-06-27 18:27:35,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6613, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7146, PETRI_PLACES=271, PETRI_TRANSITIONS=435} [2024-06-27 18:27:35,951 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 218 predicate places. [2024-06-27 18:27:35,951 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 435 transitions, 7146 flow [2024-06-27 18:27:35,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:35,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:35,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:27:35,951 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:35,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 158113587, now seen corresponding path program 7 times [2024-06-27 18:27:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230894996] [2024-06-27 18:27:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230894996] [2024-06-27 18:27:37,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230894996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:37,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:37,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504878803] [2024-06-27 18:27:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:37,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:37,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:37,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 435 transitions, 7146 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:37,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:37,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:37,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:41,396 INFO L124 PetriNetUnfolderBase]: 9057/14726 cut-off events. [2024-06-27 18:27:41,396 INFO L125 PetriNetUnfolderBase]: For 725897/725912 co-relation queries the response was YES. [2024-06-27 18:27:41,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122940 conditions, 14726 events. 9057/14726 cut-off events. For 725897/725912 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 107336 event pairs, 2139 based on Foata normal form. 36/14407 useless extension candidates. Maximal degree in co-relation 122811. Up to 12212 conditions per place. [2024-06-27 18:27:41,627 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 423 selfloop transitions, 83 changer transitions 0/515 dead transitions. [2024-06-27 18:27:41,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 515 transitions, 8951 flow [2024-06-27 18:27:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 18:27:41,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338491295938105 [2024-06-27 18:27:41,629 INFO L175 Difference]: Start difference. First operand has 271 places, 435 transitions, 7146 flow. Second operand 11 states and 276 transitions. [2024-06-27 18:27:41,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 515 transitions, 8951 flow [2024-06-27 18:27:44,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 515 transitions, 8690 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:44,062 INFO L231 Difference]: Finished difference. Result has 276 places, 444 transitions, 7340 flow [2024-06-27 18:27:44,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6893, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7340, PETRI_PLACES=276, PETRI_TRANSITIONS=444} [2024-06-27 18:27:44,063 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 223 predicate places. [2024-06-27 18:27:44,063 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 444 transitions, 7340 flow [2024-06-27 18:27:44,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:44,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:44,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:44,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:27:44,064 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:44,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash 158121957, now seen corresponding path program 8 times [2024-06-27 18:27:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208650859] [2024-06-27 18:27:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208650859] [2024-06-27 18:27:45,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208650859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:45,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:45,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788720786] [2024-06-27 18:27:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:45,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:45,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:45,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:45,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 444 transitions, 7340 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:45,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:45,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:49,343 INFO L124 PetriNetUnfolderBase]: 9229/14956 cut-off events. [2024-06-27 18:27:49,343 INFO L125 PetriNetUnfolderBase]: For 741682/741697 co-relation queries the response was YES. [2024-06-27 18:27:49,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125265 conditions, 14956 events. 9229/14956 cut-off events. For 741682/741697 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 108815 event pairs, 2118 based on Foata normal form. 30/14653 useless extension candidates. Maximal degree in co-relation 125135. Up to 11782 conditions per place. [2024-06-27 18:27:49,546 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 418 selfloop transitions, 86 changer transitions 0/513 dead transitions. [2024-06-27 18:27:49,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 513 transitions, 9025 flow [2024-06-27 18:27:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:27:49,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 18:27:49,547 INFO L175 Difference]: Start difference. First operand has 276 places, 444 transitions, 7340 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:27:49,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 513 transitions, 9025 flow [2024-06-27 18:27:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 513 transitions, 8773 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:52,145 INFO L231 Difference]: Finished difference. Result has 279 places, 446 transitions, 7401 flow [2024-06-27 18:27:52,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7088, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7401, PETRI_PLACES=279, PETRI_TRANSITIONS=446} [2024-06-27 18:27:52,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-27 18:27:52,146 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 446 transitions, 7401 flow [2024-06-27 18:27:52,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:52,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:52,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:27:52,146 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:52,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1628296611, now seen corresponding path program 9 times [2024-06-27 18:27:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891114416] [2024-06-27 18:27:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:53,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891114416] [2024-06-27 18:27:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891114416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:53,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760091820] [2024-06-27 18:27:53,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:53,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:53,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:27:53,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 446 transitions, 7401 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:53,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:53,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:27:53,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:57,415 INFO L124 PetriNetUnfolderBase]: 9196/14792 cut-off events. [2024-06-27 18:27:57,415 INFO L125 PetriNetUnfolderBase]: For 699731/699746 co-relation queries the response was YES. [2024-06-27 18:27:57,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122349 conditions, 14792 events. 9196/14792 cut-off events. For 699731/699746 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 106455 event pairs, 2006 based on Foata normal form. 30/14529 useless extension candidates. Maximal degree in co-relation 122218. Up to 11036 conditions per place. [2024-06-27 18:27:57,615 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 375 selfloop transitions, 135 changer transitions 0/519 dead transitions. [2024-06-27 18:27:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 519 transitions, 8887 flow [2024-06-27 18:27:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-06-27 18:27:57,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539651837524178 [2024-06-27 18:27:57,617 INFO L175 Difference]: Start difference. First operand has 279 places, 446 transitions, 7401 flow. Second operand 11 states and 279 transitions. [2024-06-27 18:27:57,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 519 transitions, 8887 flow [2024-06-27 18:28:00,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 519 transitions, 8590 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:00,266 INFO L231 Difference]: Finished difference. Result has 282 places, 446 transitions, 7384 flow [2024-06-27 18:28:00,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7104, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7384, PETRI_PLACES=282, PETRI_TRANSITIONS=446} [2024-06-27 18:28:00,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2024-06-27 18:28:00,268 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 446 transitions, 7384 flow [2024-06-27 18:28:00,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:00,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:00,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:28:00,268 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:00,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 435813612, now seen corresponding path program 2 times [2024-06-27 18:28:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870320600] [2024-06-27 18:28:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870320600] [2024-06-27 18:28:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870320600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:00,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236142162] [2024-06-27 18:28:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:00,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:28:00,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 446 transitions, 7384 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:00,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:28:00,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:04,977 INFO L124 PetriNetUnfolderBase]: 9230/15179 cut-off events. [2024-06-27 18:28:04,978 INFO L125 PetriNetUnfolderBase]: For 658156/658156 co-relation queries the response was YES. [2024-06-27 18:28:05,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121630 conditions, 15179 events. 9230/15179 cut-off events. For 658156/658156 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 112792 event pairs, 2515 based on Foata normal form. 2/14832 useless extension candidates. Maximal degree in co-relation 121498. Up to 13312 conditions per place. [2024-06-27 18:28:05,176 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 418 selfloop transitions, 55 changer transitions 0/482 dead transitions. [2024-06-27 18:28:05,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 482 transitions, 8715 flow [2024-06-27 18:28:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:28:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:28:05,177 INFO L175 Difference]: Start difference. First operand has 282 places, 446 transitions, 7384 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:28:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 482 transitions, 8715 flow [2024-06-27 18:28:07,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 482 transitions, 8393 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:07,043 INFO L231 Difference]: Finished difference. Result has 280 places, 449 transitions, 7244 flow [2024-06-27 18:28:07,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7244, PETRI_PLACES=280, PETRI_TRANSITIONS=449} [2024-06-27 18:28:07,044 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-27 18:28:07,044 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 449 transitions, 7244 flow [2024-06-27 18:28:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:07,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:07,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:28:07,045 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:07,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1348746122, now seen corresponding path program 3 times [2024-06-27 18:28:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630001894] [2024-06-27 18:28:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:07,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:07,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630001894] [2024-06-27 18:28:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630001894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:07,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:07,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652200069] [2024-06-27 18:28:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:07,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:28:07,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 449 transitions, 7244 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:07,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:28:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:11,771 INFO L124 PetriNetUnfolderBase]: 9224/15175 cut-off events. [2024-06-27 18:28:11,772 INFO L125 PetriNetUnfolderBase]: For 635532/635532 co-relation queries the response was YES. [2024-06-27 18:28:11,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119256 conditions, 15175 events. 9224/15175 cut-off events. For 635532/635532 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 112750 event pairs, 2514 based on Foata normal form. 2/14828 useless extension candidates. Maximal degree in co-relation 119123. Up to 13307 conditions per place. [2024-06-27 18:28:12,013 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 406 selfloop transitions, 60 changer transitions 0/475 dead transitions. [2024-06-27 18:28:12,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 475 transitions, 8300 flow [2024-06-27 18:28:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:28:12,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:28:12,015 INFO L175 Difference]: Start difference. First operand has 280 places, 449 transitions, 7244 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:28:12,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 475 transitions, 8300 flow [2024-06-27 18:28:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 475 transitions, 8154 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:14,116 INFO L231 Difference]: Finished difference. Result has 283 places, 449 transitions, 7224 flow [2024-06-27 18:28:14,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7098, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7224, PETRI_PLACES=283, PETRI_TRANSITIONS=449} [2024-06-27 18:28:14,117 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-06-27 18:28:14,117 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 449 transitions, 7224 flow [2024-06-27 18:28:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:14,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:28:14,118 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:14,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 537408719, now seen corresponding path program 1 times [2024-06-27 18:28:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:14,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177645822] [2024-06-27 18:28:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:14,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:14,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177645822] [2024-06-27 18:28:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177645822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:14,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:14,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881460992] [2024-06-27 18:28:14,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:14,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:14,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:28:14,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 449 transitions, 7224 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:14,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:28:14,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:18,616 INFO L124 PetriNetUnfolderBase]: 8985/15125 cut-off events. [2024-06-27 18:28:18,616 INFO L125 PetriNetUnfolderBase]: For 602348/602348 co-relation queries the response was YES. [2024-06-27 18:28:18,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117000 conditions, 15125 events. 8985/15125 cut-off events. For 602348/602348 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 115861 event pairs, 2181 based on Foata normal form. 4/14688 useless extension candidates. Maximal degree in co-relation 116866. Up to 12917 conditions per place. [2024-06-27 18:28:18,839 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 448 selfloop transitions, 31 changer transitions 0/493 dead transitions. [2024-06-27 18:28:18,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 493 transitions, 8605 flow [2024-06-27 18:28:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:28:18,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 18:28:18,841 INFO L175 Difference]: Start difference. First operand has 283 places, 449 transitions, 7224 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:28:18,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 493 transitions, 8605 flow [2024-06-27 18:28:21,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 493 transitions, 8477 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:21,124 INFO L231 Difference]: Finished difference. Result has 286 places, 462 transitions, 7367 flow [2024-06-27 18:28:21,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7098, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7367, PETRI_PLACES=286, PETRI_TRANSITIONS=462} [2024-06-27 18:28:21,125 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 233 predicate places. [2024-06-27 18:28:21,125 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 462 transitions, 7367 flow [2024-06-27 18:28:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:21,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:21,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:28:21,125 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:21,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash 435999085, now seen corresponding path program 2 times [2024-06-27 18:28:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:21,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358754774] [2024-06-27 18:28:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358754774] [2024-06-27 18:28:21,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358754774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:21,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:21,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:21,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143448733] [2024-06-27 18:28:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:21,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:21,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:21,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:28:21,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 462 transitions, 7367 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:21,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:21,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:28:21,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand