./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix019_tso.oepc.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/mix019_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix019_tso.oepc.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 18:22:14,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:22:14,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:22:14,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:22:14,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:22:14,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:22:14,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:22:14,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:22:14,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:22:14,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:22:14,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:22:14,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:22:14,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:22:14,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:22:14,316 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:22:14,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:22:14,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:22:14,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:22:14,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:22:14,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:22:14,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:22:14,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:22:14,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:22:14,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:22:14,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:22:14,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:22:14,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:22:14,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:22:14,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:22:14,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:22:14,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:22:14,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:22:14,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:14,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:22:14,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:22:14,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:22:14,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:22:14,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:22:14,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:22:14,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:22:14,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:22:14,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:22:14,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:22:14,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:22:14,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:22:14,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:22:14,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:22:14,532 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:22:14,532 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:22:14,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix019_tso.oepc.yml/witness.yml [2024-06-27 18:22:14,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:22:14,888 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:22:14,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i [2024-06-27 18:22:16,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:22:16,240 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:22:16,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i [2024-06-27 18:22:16,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c186fd921/041ffaac5e0548a4b9e7d40a463ea3f2/FLAG3c2ba9e63 [2024-06-27 18:22:16,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c186fd921/041ffaac5e0548a4b9e7d40a463ea3f2 [2024-06-27 18:22:16,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:22:16,278 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:22:16,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:16,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:22:16,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:22:16,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:14" (1/2) ... [2024-06-27 18:22:16,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e10479 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:16, skipping insertion in model container [2024-06-27 18:22:16,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:14" (1/2) ... [2024-06-27 18:22:16,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b977f19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:16, skipping insertion in model container [2024-06-27 18:22:16,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:16" (2/2) ... [2024-06-27 18:22:16,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e10479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16, skipping insertion in model container [2024-06-27 18:22:16,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:16" (2/2) ... [2024-06-27 18:22:16,288 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:22:16,363 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:22:16,364 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-27 18:22:16,364 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-27 18:22:16,365 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-27 18:22:16,365 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:22:16,365 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-27 18:22:16,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:22:16,595 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/mix019_tso.oepc.i[949,962] [2024-06-27 18:22:16,760 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:16,783 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:22:16,810 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/mix019_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:22:16,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:16,901 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:22:16,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16 WrapperNode [2024-06-27 18:22:16,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:16,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:16,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:22:16,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:22:16,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:16,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:16,968 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-06-27 18:22:16,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:16,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:22:16,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:22:16,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:22:16,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:16,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:16,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,010 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 18:22:17,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:22:17,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:22:17,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:22:17,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:22:17,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (1/1) ... [2024-06-27 18:22:17,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:22:17,078 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 18:22:17,100 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 18:22:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:22:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:22:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:22:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:22:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:22:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:22:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:22:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:22:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:22:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:22:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:22:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:22:17,110 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 18:22:17,241 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:22:17,244 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:22:17,561 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:22:17,561 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:22:17,684 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:22:17,684 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:22:17,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:17 BoogieIcfgContainer [2024-06-27 18:22:17,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:22:17,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:22:17,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:22:17,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:22:17,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:14" (1/4) ... [2024-06-27 18:22:17,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8de6d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:22:17, skipping insertion in model container [2024-06-27 18:22:17,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:22:16" (2/4) ... [2024-06-27 18:22:17,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8de6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:17, skipping insertion in model container [2024-06-27 18:22:17,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:16" (3/4) ... [2024-06-27 18:22:17,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8de6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:17, skipping insertion in model container [2024-06-27 18:22:17,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:17" (4/4) ... [2024-06-27 18:22:17,691 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019_tso.oepc.i [2024-06-27 18:22:17,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:22:17,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:22:17,704 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:22:17,735 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:22:17,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:22:17,780 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:22:17,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:17,782 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 78 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 18:22:17,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:22:17,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:22:17,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:22:17,795 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;@50b5e3e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:22:17,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:22:17,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:22:17,798 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:22:17,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:17,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:17,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:22:17,799 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 18:22:17,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash 357946730, now seen corresponding path program 1 times [2024-06-27 18:22:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443841871] [2024-06-27 18:22:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:18,631 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 18:22:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443841871] [2024-06-27 18:22:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443841871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:18,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:18,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:22:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477950146] [2024-06-27 18:22:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:22:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:22:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:22:18,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:22:18,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 18:22:18,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:18,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:22:18,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:19,404 INFO L124 PetriNetUnfolderBase]: 3625/5980 cut-off events. [2024-06-27 18:22:19,405 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:22:19,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 5980 events. 3625/5980 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 38729 event pairs, 2990 based on Foata normal form. 181/5595 useless extension candidates. Maximal degree in co-relation 11290. Up to 5218 conditions per place. [2024-06-27 18:22:19,438 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 42 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:22:19,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 227 flow [2024-06-27 18:22:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:22:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:22:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 18:22:19,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2024-06-27 18:22:19,449 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 97 transitions. [2024-06-27 18:22:19,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 227 flow [2024-06-27 18:22:19,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:19,457 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:22:19,458 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 18:22:19,462 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:22:19,463 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:22:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 18:22:19,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:19,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:19,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:22:19,464 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 18:22:19,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 389796337, now seen corresponding path program 1 times [2024-06-27 18:22:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429142041] [2024-06-27 18:22:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:19,928 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 18:22:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429142041] [2024-06-27 18:22:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429142041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:22:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117288905] [2024-06-27 18:22:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:22:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:22:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:22:19,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:22:19,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 18:22:19,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:19,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:22:19,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:20,549 INFO L124 PetriNetUnfolderBase]: 4349/6519 cut-off events. [2024-06-27 18:22:20,549 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2024-06-27 18:22:20,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 6519 events. 4349/6519 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 38184 event pairs, 2179 based on Foata normal form. 3/6210 useless extension candidates. Maximal degree in co-relation 14345. Up to 6202 conditions per place. [2024-06-27 18:22:20,579 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 55 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:22:20,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 327 flow [2024-06-27 18:22:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:22:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:22:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 18:22:20,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-06-27 18:22:20,581 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 123 transitions. [2024-06-27 18:22:20,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 327 flow [2024-06-27 18:22:20,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:22:20,583 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-27 18:22:20,584 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 18:22:20,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:22:20,584 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-27 18:22:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 18:22:20,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:20,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:20,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:22:20,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash -801214551, now seen corresponding path program 1 times [2024-06-27 18:22:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:20,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055262517] [2024-06-27 18:22:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:21,004 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 18:22:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055262517] [2024-06-27 18:22:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055262517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:21,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:21,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:22:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934475827] [2024-06-27 18:22:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:22:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:22:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:22:21,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:22:21,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:21,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:21,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:22:21,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:21,701 INFO L124 PetriNetUnfolderBase]: 4333/7038 cut-off events. [2024-06-27 18:22:21,701 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-27 18:22:21,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16304 conditions, 7038 events. 4333/7038 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45704 event pairs, 1996 based on Foata normal form. 6/6521 useless extension candidates. Maximal degree in co-relation 16290. Up to 6151 conditions per place. [2024-06-27 18:22:21,733 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 67 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 18:22:21,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 486 flow [2024-06-27 18:22:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:22:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:22:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-27 18:22:21,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297872340425532 [2024-06-27 18:22:21,737 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 148 transitions. [2024-06-27 18:22:21,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 486 flow [2024-06-27 18:22:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 450 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:21,742 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 298 flow [2024-06-27 18:22:21,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-06-27 18:22:21,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-27 18:22:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 298 flow [2024-06-27 18:22:21,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:21,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:21,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:22:21,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash -812362965, now seen corresponding path program 1 times [2024-06-27 18:22:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:21,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775668495] [2024-06-27 18:22:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:21,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:21,812 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 18:22:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775668495] [2024-06-27 18:22:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775668495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:21,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:22:21,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010318305] [2024-06-27 18:22:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:21,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:22:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:22:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:22:21,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-27 18:22:21,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:22:21,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:21,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-27 18:22:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:22,045 INFO L124 PetriNetUnfolderBase]: 1172/2484 cut-off events. [2024-06-27 18:22:22,045 INFO L125 PetriNetUnfolderBase]: For 1295/1449 co-relation queries the response was YES. [2024-06-27 18:22:22,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2484 events. 1172/2484 cut-off events. For 1295/1449 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18888 event pairs, 379 based on Foata normal form. 21/2319 useless extension candidates. Maximal degree in co-relation 5378. Up to 1486 conditions per place. [2024-06-27 18:22:22,059 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-06-27 18:22:22,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 369 flow [2024-06-27 18:22:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:22:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:22:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 18:22:22,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588652482269503 [2024-06-27 18:22:22,061 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 298 flow. Second operand 3 states and 107 transitions. [2024-06-27 18:22:22,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 369 flow [2024-06-27 18:22:22,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 361 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:22:22,065 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 261 flow [2024-06-27 18:22:22,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-27 18:22:22,066 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 18:22:22,066 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 261 flow [2024-06-27 18:22:22,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:22:22,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:22,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:22,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:22:22,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:22,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash -794875284, now seen corresponding path program 1 times [2024-06-27 18:22:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:22,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34303517] [2024-06-27 18:22:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:22,957 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 18:22:22,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:22,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34303517] [2024-06-27 18:22:22,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34303517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:22,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:22,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:22:22,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289720483] [2024-06-27 18:22:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:22,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:22:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:22:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:22:23,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:22:23,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:22:23,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:23,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:22:23,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:23,652 INFO L124 PetriNetUnfolderBase]: 3556/5752 cut-off events. [2024-06-27 18:22:23,652 INFO L125 PetriNetUnfolderBase]: For 5485/5485 co-relation queries the response was YES. [2024-06-27 18:22:23,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14459 conditions, 5752 events. 3556/5752 cut-off events. For 5485/5485 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35177 event pairs, 1702 based on Foata normal form. 6/5576 useless extension candidates. Maximal degree in co-relation 14440. Up to 5018 conditions per place. [2024-06-27 18:22:23,681 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 69 selfloop transitions, 16 changer transitions 1/97 dead transitions. [2024-06-27 18:22:23,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 531 flow [2024-06-27 18:22:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 18:22:23,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921985815602837 [2024-06-27 18:22:23,683 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 261 flow. Second operand 6 states and 167 transitions. [2024-06-27 18:22:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 531 flow [2024-06-27 18:22:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:23,687 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 303 flow [2024-06-27 18:22:23,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-27 18:22:23,688 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-27 18:22:23,688 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 303 flow [2024-06-27 18:22:23,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:22:23,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:23,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:23,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:22:23,689 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 18:22:23,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1002444529, now seen corresponding path program 1 times [2024-06-27 18:22:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195221767] [2024-06-27 18:22:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:24,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195221767] [2024-06-27 18:22:24,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195221767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:24,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:24,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:22:24,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552194540] [2024-06-27 18:22:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:24,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:22:24,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:22:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:22:24,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:24,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:24,902 INFO L124 PetriNetUnfolderBase]: 2957/5076 cut-off events. [2024-06-27 18:22:24,902 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2024-06-27 18:22:24,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13126 conditions, 5076 events. 2957/5076 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32580 event pairs, 1511 based on Foata normal form. 2/4887 useless extension candidates. Maximal degree in co-relation 13105. Up to 4259 conditions per place. [2024-06-27 18:22:24,926 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 67 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-06-27 18:22:24,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 549 flow [2024-06-27 18:22:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:22:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:22:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-27 18:22:24,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-27 18:22:24,928 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 303 flow. Second operand 5 states and 122 transitions. [2024-06-27 18:22:24,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 549 flow [2024-06-27 18:22:24,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 501 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:24,933 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 348 flow [2024-06-27 18:22:24,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-27 18:22:24,935 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-27 18:22:24,935 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 348 flow [2024-06-27 18:22:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:24,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:24,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:22:24,936 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 18:22:24,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2043154662, now seen corresponding path program 1 times [2024-06-27 18:22:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547641968] [2024-06-27 18:22:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:25,543 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 18:22:25,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:25,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547641968] [2024-06-27 18:22:25,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547641968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:25,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:25,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:22:25,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382039467] [2024-06-27 18:22:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:22:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:22:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:22:25,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:25,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:25,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:25,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:25,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:26,328 INFO L124 PetriNetUnfolderBase]: 3585/5886 cut-off events. [2024-06-27 18:22:26,329 INFO L125 PetriNetUnfolderBase]: For 9042/9042 co-relation queries the response was YES. [2024-06-27 18:22:26,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 5886 events. 3585/5886 cut-off events. For 9042/9042 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36544 event pairs, 1816 based on Foata normal form. 2/5706 useless extension candidates. Maximal degree in co-relation 16372. Up to 5118 conditions per place. [2024-06-27 18:22:26,358 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 80 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 18:22:26,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 650 flow [2024-06-27 18:22:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:22:26,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 18:22:26,360 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 348 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:22:26,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 650 flow [2024-06-27 18:22:26,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 633 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:26,366 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 430 flow [2024-06-27 18:22:26,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-27 18:22:26,368 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-27 18:22:26,368 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 430 flow [2024-06-27 18:22:26,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:26,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:26,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:22:26,369 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 18:22:26,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1276571472, now seen corresponding path program 2 times [2024-06-27 18:22:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190256292] [2024-06-27 18:22:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:26,953 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 18:22:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190256292] [2024-06-27 18:22:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190256292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:26,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:22:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454995260] [2024-06-27 18:22:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:26,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:22:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:22:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:22:27,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:27,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 430 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:27,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:27,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:27,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:27,591 INFO L124 PetriNetUnfolderBase]: 3588/5924 cut-off events. [2024-06-27 18:22:27,592 INFO L125 PetriNetUnfolderBase]: For 12548/12568 co-relation queries the response was YES. [2024-06-27 18:22:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17618 conditions, 5924 events. 3588/5924 cut-off events. For 12548/12568 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37095 event pairs, 1719 based on Foata normal form. 18/5759 useless extension candidates. Maximal degree in co-relation 17591. Up to 5087 conditions per place. [2024-06-27 18:22:27,626 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 78 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-27 18:22:27,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 105 transitions, 726 flow [2024-06-27 18:22:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:22:27,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:22:27,628 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 430 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:22:27,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 105 transitions, 726 flow [2024-06-27 18:22:27,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 695 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:27,635 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 475 flow [2024-06-27 18:22:27,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-27 18:22:27,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-06-27 18:22:27,636 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 475 flow [2024-06-27 18:22:27,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:27,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:27,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:27,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:22:27,637 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 18:22:27,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1276580400, now seen corresponding path program 1 times [2024-06-27 18:22:27,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:27,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781753075] [2024-06-27 18:22:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:28,302 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 18:22:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781753075] [2024-06-27 18:22:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781753075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:28,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225741909] [2024-06-27 18:22:28,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:28,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:28,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 475 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 18:22:28,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:28,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:29,221 INFO L124 PetriNetUnfolderBase]: 3659/6177 cut-off events. [2024-06-27 18:22:29,222 INFO L125 PetriNetUnfolderBase]: For 16059/16059 co-relation queries the response was YES. [2024-06-27 18:22:29,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19031 conditions, 6177 events. 3659/6177 cut-off events. For 16059/16059 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39599 event pairs, 1782 based on Foata normal form. 2/5947 useless extension candidates. Maximal degree in co-relation 19003. Up to 5214 conditions per place. [2024-06-27 18:22:29,255 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 90 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-27 18:22:29,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 125 transitions, 921 flow [2024-06-27 18:22:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:22:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-27 18:22:29,257 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 475 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:22:29,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 125 transitions, 921 flow [2024-06-27 18:22:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 125 transitions, 863 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:29,266 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 645 flow [2024-06-27 18:22:29,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2024-06-27 18:22:29,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-27 18:22:29,267 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 645 flow [2024-06-27 18:22:29,267 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 18:22:29,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:29,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:22:29,268 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 18:22:29,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 740836718, now seen corresponding path program 1 times [2024-06-27 18:22:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965528918] [2024-06-27 18:22:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:29,871 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 18:22:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965528918] [2024-06-27 18:22:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965528918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:29,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:29,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030741607] [2024-06-27 18:22:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:29,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:29,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:29,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 645 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 18:22:29,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:29,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:29,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:30,966 INFO L124 PetriNetUnfolderBase]: 4290/6996 cut-off events. [2024-06-27 18:22:30,966 INFO L125 PetriNetUnfolderBase]: For 25394/25409 co-relation queries the response was YES. [2024-06-27 18:22:30,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24017 conditions, 6996 events. 4290/6996 cut-off events. For 25394/25409 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44258 event pairs, 1715 based on Foata normal form. 5/6777 useless extension candidates. Maximal degree in co-relation 23986. Up to 6043 conditions per place. [2024-06-27 18:22:31,011 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 102 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-27 18:22:31,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 141 transitions, 1066 flow [2024-06-27 18:22:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:22:31,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 18:22:31,014 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 645 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:22:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 141 transitions, 1066 flow [2024-06-27 18:22:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 141 transitions, 990 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:31,031 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 718 flow [2024-06-27 18:22:31,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-06-27 18:22:31,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-27 18:22:31,032 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 718 flow [2024-06-27 18:22:31,032 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 18:22:31,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:31,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:31,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:22:31,033 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 18:22:31,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 740957618, now seen corresponding path program 2 times [2024-06-27 18:22:31,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:31,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261188159] [2024-06-27 18:22:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261188159] [2024-06-27 18:22:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261188159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:31,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:31,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:31,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750670205] [2024-06-27 18:22:31,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:31,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 718 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 18:22:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:32,559 INFO L124 PetriNetUnfolderBase]: 4504/7331 cut-off events. [2024-06-27 18:22:32,559 INFO L125 PetriNetUnfolderBase]: For 34709/34724 co-relation queries the response was YES. [2024-06-27 18:22:32,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27748 conditions, 7331 events. 4504/7331 cut-off events. For 34709/34724 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46262 event pairs, 1547 based on Foata normal form. 23/7134 useless extension candidates. Maximal degree in co-relation 27714. Up to 6158 conditions per place. [2024-06-27 18:22:32,608 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 110 selfloop transitions, 36 changer transitions 0/156 dead transitions. [2024-06-27 18:22:32,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1284 flow [2024-06-27 18:22:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:22:32,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:22:32,610 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 718 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:22:32,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1284 flow [2024-06-27 18:22:32,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 156 transitions, 1215 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:32,635 INFO L231 Difference]: Finished difference. Result has 90 places, 116 transitions, 873 flow [2024-06-27 18:22:32,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=873, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2024-06-27 18:22:32,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-06-27 18:22:32,636 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 873 flow [2024-06-27 18:22:32,637 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 18:22:32,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:32,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:32,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:22:32,637 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 18:22:32,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash 745628078, now seen corresponding path program 3 times [2024-06-27 18:22:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70307320] [2024-06-27 18:22:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:33,229 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 18:22:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70307320] [2024-06-27 18:22:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70307320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:33,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:33,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:33,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443778647] [2024-06-27 18:22:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:33,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:33,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:33,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 873 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 18:22:33,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:33,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:33,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:34,160 INFO L124 PetriNetUnfolderBase]: 4539/7389 cut-off events. [2024-06-27 18:22:34,160 INFO L125 PetriNetUnfolderBase]: For 45352/45360 co-relation queries the response was YES. [2024-06-27 18:22:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30199 conditions, 7389 events. 4539/7389 cut-off events. For 45352/45360 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 46869 event pairs, 1335 based on Foata normal form. 17/7182 useless extension candidates. Maximal degree in co-relation 30163. Up to 5972 conditions per place. [2024-06-27 18:22:34,205 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 104 selfloop transitions, 57 changer transitions 0/171 dead transitions. [2024-06-27 18:22:34,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1561 flow [2024-06-27 18:22:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 18:22:34,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-06-27 18:22:34,210 INFO L175 Difference]: Start difference. First operand has 90 places, 116 transitions, 873 flow. Second operand 7 states and 180 transitions. [2024-06-27 18:22:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1561 flow [2024-06-27 18:22:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 171 transitions, 1465 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:34,243 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 1061 flow [2024-06-27 18:22:34,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1061, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2024-06-27 18:22:34,243 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-06-27 18:22:34,244 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 1061 flow [2024-06-27 18:22:34,244 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 18:22:34,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:34,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:34,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:22:34,244 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 18:22:34,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 919288745, now seen corresponding path program 1 times [2024-06-27 18:22:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246800546] [2024-06-27 18:22:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:35,156 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 18:22:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246800546] [2024-06-27 18:22:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246800546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:35,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738771734] [2024-06-27 18:22:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:35,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:35,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 1061 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 18:22:35,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:35,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:35,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:36,134 INFO L124 PetriNetUnfolderBase]: 4040/6735 cut-off events. [2024-06-27 18:22:36,135 INFO L125 PetriNetUnfolderBase]: For 42737/42737 co-relation queries the response was YES. [2024-06-27 18:22:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28102 conditions, 6735 events. 4040/6735 cut-off events. For 42737/42737 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 42656 event pairs, 1366 based on Foata normal form. 4/6501 useless extension candidates. Maximal degree in co-relation 28064. Up to 5712 conditions per place. [2024-06-27 18:22:36,195 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 131 selfloop transitions, 29 changer transitions 0/169 dead transitions. [2024-06-27 18:22:36,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1537 flow [2024-06-27 18:22:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:22:36,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:22:36,197 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 1061 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:22:36,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1537 flow [2024-06-27 18:22:36,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1383 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:36,240 INFO L231 Difference]: Finished difference. Result has 98 places, 131 transitions, 1023 flow [2024-06-27 18:22:36,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1023, PETRI_PLACES=98, PETRI_TRANSITIONS=131} [2024-06-27 18:22:36,241 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-06-27 18:22:36,241 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 131 transitions, 1023 flow [2024-06-27 18:22:36,241 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 18:22:36,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:36,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:36,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:22:36,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:36,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -469600223, now seen corresponding path program 1 times [2024-06-27 18:22:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:36,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879488075] [2024-06-27 18:22:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:36,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:36,642 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 18:22:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879488075] [2024-06-27 18:22:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879488075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:22:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096568632] [2024-06-27 18:22:36,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:22:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:22:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:22:36,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:36,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 131 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:22:36,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:36,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:37,554 INFO L124 PetriNetUnfolderBase]: 4769/7668 cut-off events. [2024-06-27 18:22:37,555 INFO L125 PetriNetUnfolderBase]: For 47752/47752 co-relation queries the response was YES. [2024-06-27 18:22:37,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31156 conditions, 7668 events. 4769/7668 cut-off events. For 47752/47752 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 47210 event pairs, 1750 based on Foata normal form. 1/7446 useless extension candidates. Maximal degree in co-relation 31117. Up to 6790 conditions per place. [2024-06-27 18:22:37,603 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 128 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2024-06-27 18:22:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 1381 flow [2024-06-27 18:22:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:22:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:22:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 18:22:37,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-27 18:22:37,605 INFO L175 Difference]: Start difference. First operand has 98 places, 131 transitions, 1023 flow. Second operand 5 states and 112 transitions. [2024-06-27 18:22:37,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 1381 flow [2024-06-27 18:22:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 150 transitions, 1293 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:37,648 INFO L231 Difference]: Finished difference. Result has 97 places, 134 transitions, 999 flow [2024-06-27 18:22:37,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=999, PETRI_PLACES=97, PETRI_TRANSITIONS=134} [2024-06-27 18:22:37,648 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 18:22:37,648 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 134 transitions, 999 flow [2024-06-27 18:22:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:22:37,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:37,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:37,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:22:37,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:37,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1491012399, now seen corresponding path program 1 times [2024-06-27 18:22:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529337869] [2024-06-27 18:22:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:38,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:38,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529337869] [2024-06-27 18:22:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529337869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:38,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639934165] [2024-06-27 18:22:38,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:38,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:38,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:38,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 134 transitions, 999 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 18:22:38,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:38,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:38,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:39,753 INFO L124 PetriNetUnfolderBase]: 4863/7914 cut-off events. [2024-06-27 18:22:39,753 INFO L125 PetriNetUnfolderBase]: For 61622/61623 co-relation queries the response was YES. [2024-06-27 18:22:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34348 conditions, 7914 events. 4863/7914 cut-off events. For 61622/61623 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 51052 event pairs, 1582 based on Foata normal form. 3/7631 useless extension candidates. Maximal degree in co-relation 34308. Up to 6779 conditions per place. [2024-06-27 18:22:39,812 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 131 selfloop transitions, 37 changer transitions 0/179 dead transitions. [2024-06-27 18:22:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 179 transitions, 1521 flow [2024-06-27 18:22:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:22:39,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-27 18:22:39,815 INFO L175 Difference]: Start difference. First operand has 97 places, 134 transitions, 999 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:22:39,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 179 transitions, 1521 flow [2024-06-27 18:22:39,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1489 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:39,861 INFO L231 Difference]: Finished difference. Result has 102 places, 143 transitions, 1166 flow [2024-06-27 18:22:39,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1166, PETRI_PLACES=102, PETRI_TRANSITIONS=143} [2024-06-27 18:22:39,862 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-06-27 18:22:39,862 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 143 transitions, 1166 flow [2024-06-27 18:22:39,863 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 18:22:39,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:39,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:39,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:22:39,863 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 18:22:39,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1502628493, now seen corresponding path program 1 times [2024-06-27 18:22:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870559353] [2024-06-27 18:22:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:40,640 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 18:22:40,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:40,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870559353] [2024-06-27 18:22:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870559353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:40,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:40,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:40,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408202594] [2024-06-27 18:22:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:40,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:40,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 143 transitions, 1166 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:40,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:40,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:40,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:41,757 INFO L124 PetriNetUnfolderBase]: 5111/8208 cut-off events. [2024-06-27 18:22:41,757 INFO L125 PetriNetUnfolderBase]: For 64158/64158 co-relation queries the response was YES. [2024-06-27 18:22:41,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35219 conditions, 8208 events. 5111/8208 cut-off events. For 64158/64158 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 51385 event pairs, 1620 based on Foata normal form. 6/7926 useless extension candidates. Maximal degree in co-relation 35177. Up to 6869 conditions per place. [2024-06-27 18:22:41,819 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 140 selfloop transitions, 62 changer transitions 0/211 dead transitions. [2024-06-27 18:22:41,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 211 transitions, 1967 flow [2024-06-27 18:22:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:22:41,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:22:41,821 INFO L175 Difference]: Start difference. First operand has 102 places, 143 transitions, 1166 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:22:41,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 211 transitions, 1967 flow [2024-06-27 18:22:41,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 211 transitions, 1823 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:41,881 INFO L231 Difference]: Finished difference. Result has 109 places, 166 transitions, 1459 flow [2024-06-27 18:22:41,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1459, PETRI_PLACES=109, PETRI_TRANSITIONS=166} [2024-06-27 18:22:41,882 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 18:22:41,882 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 166 transitions, 1459 flow [2024-06-27 18:22:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:41,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:41,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:22:41,882 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 18:22:41,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 51317659, now seen corresponding path program 2 times [2024-06-27 18:22:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:41,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231663065] [2024-06-27 18:22:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:41,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:42,696 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 18:22:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:42,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231663065] [2024-06-27 18:22:42,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231663065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:42,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:42,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833657825] [2024-06-27 18:22:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:42,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:42,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:42,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 166 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:42,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:42,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:42,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:43,843 INFO L124 PetriNetUnfolderBase]: 5194/8327 cut-off events. [2024-06-27 18:22:43,843 INFO L125 PetriNetUnfolderBase]: For 71904/71911 co-relation queries the response was YES. [2024-06-27 18:22:43,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36918 conditions, 8327 events. 5194/8327 cut-off events. For 71904/71911 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 52042 event pairs, 1517 based on Foata normal form. 10/8059 useless extension candidates. Maximal degree in co-relation 36873. Up to 6823 conditions per place. [2024-06-27 18:22:43,902 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 138 selfloop transitions, 96 changer transitions 0/243 dead transitions. [2024-06-27 18:22:43,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 243 transitions, 2408 flow [2024-06-27 18:22:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:22:43,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:22:43,904 INFO L175 Difference]: Start difference. First operand has 109 places, 166 transitions, 1459 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:22:43,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 243 transitions, 2408 flow [2024-06-27 18:22:43,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 243 transitions, 2344 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:43,998 INFO L231 Difference]: Finished difference. Result has 115 places, 194 transitions, 1924 flow [2024-06-27 18:22:43,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1924, PETRI_PLACES=115, PETRI_TRANSITIONS=194} [2024-06-27 18:22:44,004 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:22:44,005 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 194 transitions, 1924 flow [2024-06-27 18:22:44,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:44,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:44,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:44,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:22:44,005 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 18:22:44,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1566828849, now seen corresponding path program 3 times [2024-06-27 18:22:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:44,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329906096] [2024-06-27 18:22:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:45,040 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 18:22:45,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329906096] [2024-06-27 18:22:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329906096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:45,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103751050] [2024-06-27 18:22:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:45,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:45,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 194 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:45,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:45,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:45,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:46,246 INFO L124 PetriNetUnfolderBase]: 5246/8364 cut-off events. [2024-06-27 18:22:46,246 INFO L125 PetriNetUnfolderBase]: For 80327/80355 co-relation queries the response was YES. [2024-06-27 18:22:46,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38958 conditions, 8364 events. 5246/8364 cut-off events. For 80327/80355 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 51931 event pairs, 1583 based on Foata normal form. 24/8121 useless extension candidates. Maximal degree in co-relation 38910. Up to 7178 conditions per place. [2024-06-27 18:22:46,309 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 212 selfloop transitions, 74 changer transitions 0/295 dead transitions. [2024-06-27 18:22:46,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 295 transitions, 3244 flow [2024-06-27 18:22:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:22:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:22:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:22:46,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 18:22:46,311 INFO L175 Difference]: Start difference. First operand has 115 places, 194 transitions, 1924 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:22:46,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 295 transitions, 3244 flow [2024-06-27 18:22:46,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 295 transitions, 3096 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:46,448 INFO L231 Difference]: Finished difference. Result has 125 places, 237 transitions, 2511 flow [2024-06-27 18:22:46,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2511, PETRI_PLACES=125, PETRI_TRANSITIONS=237} [2024-06-27 18:22:46,449 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-27 18:22:46,449 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 237 transitions, 2511 flow [2024-06-27 18:22:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:46,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:46,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:46,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:22:46,450 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 18:22:46,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1575399729, now seen corresponding path program 4 times [2024-06-27 18:22:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:46,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046499601] [2024-06-27 18:22:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:46,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:47,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046499601] [2024-06-27 18:22:47,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046499601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:47,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:47,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666185180] [2024-06-27 18:22:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:47,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:47,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:47,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 237 transitions, 2511 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:47,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:47,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:47,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:48,389 INFO L124 PetriNetUnfolderBase]: 5219/8330 cut-off events. [2024-06-27 18:22:48,389 INFO L125 PetriNetUnfolderBase]: For 88630/88637 co-relation queries the response was YES. [2024-06-27 18:22:48,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40216 conditions, 8330 events. 5219/8330 cut-off events. For 88630/88637 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51718 event pairs, 1525 based on Foata normal form. 10/8073 useless extension candidates. Maximal degree in co-relation 40163. Up to 6855 conditions per place. [2024-06-27 18:22:48,454 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 175 selfloop transitions, 101 changer transitions 0/285 dead transitions. [2024-06-27 18:22:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 285 transitions, 3298 flow [2024-06-27 18:22:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:22:48,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:22:48,456 INFO L175 Difference]: Start difference. First operand has 125 places, 237 transitions, 2511 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:22:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 285 transitions, 3298 flow [2024-06-27 18:22:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 285 transitions, 3116 flow, removed 86 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:48,638 INFO L231 Difference]: Finished difference. Result has 131 places, 241 transitions, 2624 flow [2024-06-27 18:22:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2624, PETRI_PLACES=131, PETRI_TRANSITIONS=241} [2024-06-27 18:22:48,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-27 18:22:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 241 transitions, 2624 flow [2024-06-27 18:22:48,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:48,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:48,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:22:48,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1705771892, now seen corresponding path program 1 times [2024-06-27 18:22:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404631426] [2024-06-27 18:22:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:49,130 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 18:22:49,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:49,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404631426] [2024-06-27 18:22:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404631426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:49,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:22:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150312417] [2024-06-27 18:22:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:49,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:22:49,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:22:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:22:49,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 241 transitions, 2624 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:22:49,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:49,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:49,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:50,291 INFO L124 PetriNetUnfolderBase]: 4905/7846 cut-off events. [2024-06-27 18:22:50,291 INFO L125 PetriNetUnfolderBase]: For 81326/81326 co-relation queries the response was YES. [2024-06-27 18:22:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38159 conditions, 7846 events. 4905/7846 cut-off events. For 81326/81326 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 47932 event pairs, 1544 based on Foata normal form. 2/7628 useless extension candidates. Maximal degree in co-relation 38104. Up to 6947 conditions per place. [2024-06-27 18:22:50,350 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 242 selfloop transitions, 17 changer transitions 0/267 dead transitions. [2024-06-27 18:22:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 267 transitions, 3256 flow [2024-06-27 18:22:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 18:22:50,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-27 18:22:50,352 INFO L175 Difference]: Start difference. First operand has 131 places, 241 transitions, 2624 flow. Second operand 6 states and 133 transitions. [2024-06-27 18:22:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 267 transitions, 3256 flow [2024-06-27 18:22:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 267 transitions, 2971 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:50,481 INFO L231 Difference]: Finished difference. Result has 130 places, 244 transitions, 2413 flow [2024-06-27 18:22:50,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2413, PETRI_PLACES=130, PETRI_TRANSITIONS=244} [2024-06-27 18:22:50,482 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-27 18:22:50,482 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 244 transitions, 2413 flow [2024-06-27 18:22:50,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:22:50,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:50,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:50,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:22:50,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:50,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1023315475, now seen corresponding path program 1 times [2024-06-27 18:22:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:50,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980459073] [2024-06-27 18:22:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:51,363 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 18:22:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980459073] [2024-06-27 18:22:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980459073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:22:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216683739] [2024-06-27 18:22:51,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:51,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:22:51,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:22:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:22:51,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:51,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 244 transitions, 2413 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 18:22:51,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:51,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:51,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:52,704 INFO L124 PetriNetUnfolderBase]: 5028/8149 cut-off events. [2024-06-27 18:22:52,705 INFO L125 PetriNetUnfolderBase]: For 101113/101135 co-relation queries the response was YES. [2024-06-27 18:22:52,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41252 conditions, 8149 events. 5028/8149 cut-off events. For 101113/101135 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52083 event pairs, 1173 based on Foata normal form. 12/7865 useless extension candidates. Maximal degree in co-relation 41198. Up to 6957 conditions per place. [2024-06-27 18:22:52,771 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 243 selfloop transitions, 34 changer transitions 0/294 dead transitions. [2024-06-27 18:22:52,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 294 transitions, 3161 flow [2024-06-27 18:22:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:22:52,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:22:52,772 INFO L175 Difference]: Start difference. First operand has 130 places, 244 transitions, 2413 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:22:52,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 294 transitions, 3161 flow [2024-06-27 18:22:52,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 294 transitions, 3109 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:52,906 INFO L231 Difference]: Finished difference. Result has 135 places, 251 transitions, 2539 flow [2024-06-27 18:22:52,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2539, PETRI_PLACES=135, PETRI_TRANSITIONS=251} [2024-06-27 18:22:52,906 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-06-27 18:22:52,906 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 251 transitions, 2539 flow [2024-06-27 18:22:52,907 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 18:22:52,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:52,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:22:52,907 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 18:22:52,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash -782380685, now seen corresponding path program 2 times [2024-06-27 18:22:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:52,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55989311] [2024-06-27 18:22:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:53,741 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 18:22:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55989311] [2024-06-27 18:22:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55989311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:53,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:22:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858482556] [2024-06-27 18:22:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:53,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:22:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:22:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:22:53,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:53,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 251 transitions, 2539 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 18:22:53,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:53,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:53,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:55,164 INFO L124 PetriNetUnfolderBase]: 5089/8269 cut-off events. [2024-06-27 18:22:55,164 INFO L125 PetriNetUnfolderBase]: For 115331/115353 co-relation queries the response was YES. [2024-06-27 18:22:55,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43118 conditions, 8269 events. 5089/8269 cut-off events. For 115331/115353 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53167 event pairs, 1424 based on Foata normal form. 16/7973 useless extension candidates. Maximal degree in co-relation 43062. Up to 6996 conditions per place. [2024-06-27 18:22:55,230 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 235 selfloop transitions, 51 changer transitions 0/303 dead transitions. [2024-06-27 18:22:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 303 transitions, 3384 flow [2024-06-27 18:22:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:22:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 18:22:55,232 INFO L175 Difference]: Start difference. First operand has 135 places, 251 transitions, 2539 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:22:55,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 303 transitions, 3384 flow [2024-06-27 18:22:55,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 303 transitions, 3264 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:55,376 INFO L231 Difference]: Finished difference. Result has 139 places, 259 transitions, 2719 flow [2024-06-27 18:22:55,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2719, PETRI_PLACES=139, PETRI_TRANSITIONS=259} [2024-06-27 18:22:55,377 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 18:22:55,377 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 259 transitions, 2719 flow [2024-06-27 18:22:55,377 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 18:22:55,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:55,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:55,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:22:55,377 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 18:22:55,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1435619426, now seen corresponding path program 1 times [2024-06-27 18:22:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:55,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626336446] [2024-06-27 18:22:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:56,261 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 18:22:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626336446] [2024-06-27 18:22:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626336446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:22:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131830941] [2024-06-27 18:22:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:22:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:22:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:22:56,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:56,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 259 transitions, 2719 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:56,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:56,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:56,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:57,817 INFO L124 PetriNetUnfolderBase]: 5467/8709 cut-off events. [2024-06-27 18:22:57,817 INFO L125 PetriNetUnfolderBase]: For 124342/124348 co-relation queries the response was YES. [2024-06-27 18:22:57,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45255 conditions, 8709 events. 5467/8709 cut-off events. For 124342/124348 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 54096 event pairs, 1552 based on Foata normal form. 10/8426 useless extension candidates. Maximal degree in co-relation 45197. Up to 7623 conditions per place. [2024-06-27 18:22:57,903 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 278 selfloop transitions, 32 changer transitions 0/319 dead transitions. [2024-06-27 18:22:57,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 319 transitions, 3623 flow [2024-06-27 18:22:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:22:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:22:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 18:22:57,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:22:57,904 INFO L175 Difference]: Start difference. First operand has 139 places, 259 transitions, 2719 flow. Second operand 9 states and 207 transitions. [2024-06-27 18:22:57,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 319 transitions, 3623 flow [2024-06-27 18:22:58,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 319 transitions, 3480 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:58,119 INFO L231 Difference]: Finished difference. Result has 145 places, 266 transitions, 2774 flow [2024-06-27 18:22:58,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2774, PETRI_PLACES=145, PETRI_TRANSITIONS=266} [2024-06-27 18:22:58,120 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-27 18:22:58,120 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 266 transitions, 2774 flow [2024-06-27 18:22:58,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:58,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:58,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:22:58,121 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 18:22:58,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -904243855, now seen corresponding path program 3 times [2024-06-27 18:22:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590583591] [2024-06-27 18:22:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:59,012 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 18:22:59,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:59,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590583591] [2024-06-27 18:22:59,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590583591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:59,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:59,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:22:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333058055] [2024-06-27 18:22:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:59,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:22:59,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:22:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:22:59,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:59,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 266 transitions, 2774 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 18:22:59,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:59,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:59,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:00,594 INFO L124 PetriNetUnfolderBase]: 5361/8678 cut-off events. [2024-06-27 18:23:00,595 INFO L125 PetriNetUnfolderBase]: For 150851/150873 co-relation queries the response was YES. [2024-06-27 18:23:00,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47402 conditions, 8678 events. 5361/8678 cut-off events. For 150851/150873 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 55849 event pairs, 1438 based on Foata normal form. 36/8408 useless extension candidates. Maximal degree in co-relation 47341. Up to 7028 conditions per place. [2024-06-27 18:23:00,670 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 223 selfloop transitions, 75 changer transitions 0/316 dead transitions. [2024-06-27 18:23:00,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 316 transitions, 3604 flow [2024-06-27 18:23:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:23:00,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:23:00,672 INFO L175 Difference]: Start difference. First operand has 145 places, 266 transitions, 2774 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:23:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 316 transitions, 3604 flow [2024-06-27 18:23:00,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 316 transitions, 3498 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:00,904 INFO L231 Difference]: Finished difference. Result has 148 places, 269 transitions, 2911 flow [2024-06-27 18:23:00,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2911, PETRI_PLACES=148, PETRI_TRANSITIONS=269} [2024-06-27 18:23:00,905 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-06-27 18:23:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 269 transitions, 2911 flow [2024-06-27 18:23:00,905 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 18:23:00,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:00,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:00,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:23:00,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1351714966, now seen corresponding path program 1 times [2024-06-27 18:23:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611801687] [2024-06-27 18:23:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:01,394 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 18:23:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611801687] [2024-06-27 18:23:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611801687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:01,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538179015] [2024-06-27 18:23:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:01,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:23:01,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 269 transitions, 2911 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:01,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:01,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:23:01,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:02,758 INFO L124 PetriNetUnfolderBase]: 6064/9426 cut-off events. [2024-06-27 18:23:02,758 INFO L125 PetriNetUnfolderBase]: For 157020/157020 co-relation queries the response was YES. [2024-06-27 18:23:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51095 conditions, 9426 events. 6064/9426 cut-off events. For 157020/157020 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 56699 event pairs, 1785 based on Foata normal form. 1/9170 useless extension candidates. Maximal degree in co-relation 51033. Up to 8574 conditions per place. [2024-06-27 18:23:03,020 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 273 selfloop transitions, 26 changer transitions 0/306 dead transitions. [2024-06-27 18:23:03,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 3777 flow [2024-06-27 18:23:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:23:03,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:23:03,022 INFO L175 Difference]: Start difference. First operand has 148 places, 269 transitions, 2911 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:23:03,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 3777 flow [2024-06-27 18:23:03,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 306 transitions, 3578 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:03,313 INFO L231 Difference]: Finished difference. Result has 148 places, 275 transitions, 2846 flow [2024-06-27 18:23:03,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2846, PETRI_PLACES=148, PETRI_TRANSITIONS=275} [2024-06-27 18:23:03,314 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-06-27 18:23:03,314 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 275 transitions, 2846 flow [2024-06-27 18:23:03,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:03,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:03,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:03,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:23:03,315 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 18:23:03,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1336248824, now seen corresponding path program 2 times [2024-06-27 18:23:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:03,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477216211] [2024-06-27 18:23:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:03,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:04,539 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 18:23:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477216211] [2024-06-27 18:23:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477216211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:04,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111761938] [2024-06-27 18:23:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:04,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:04,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 275 transitions, 2846 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:04,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:04,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:04,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:06,045 INFO L124 PetriNetUnfolderBase]: 5759/9157 cut-off events. [2024-06-27 18:23:06,046 INFO L125 PetriNetUnfolderBase]: For 156850/156917 co-relation queries the response was YES. [2024-06-27 18:23:06,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49555 conditions, 9157 events. 5759/9157 cut-off events. For 156850/156917 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 57295 event pairs, 1536 based on Foata normal form. 34/8896 useless extension candidates. Maximal degree in co-relation 49492. Up to 7946 conditions per place. [2024-06-27 18:23:06,139 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 269 selfloop transitions, 58 changer transitions 0/338 dead transitions. [2024-06-27 18:23:06,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 338 transitions, 3827 flow [2024-06-27 18:23:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:23:06,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-27 18:23:06,141 INFO L175 Difference]: Start difference. First operand has 148 places, 275 transitions, 2846 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:23:06,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 338 transitions, 3827 flow [2024-06-27 18:23:06,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 338 transitions, 3787 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:06,466 INFO L231 Difference]: Finished difference. Result has 156 places, 281 transitions, 3045 flow [2024-06-27 18:23:06,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3045, PETRI_PLACES=156, PETRI_TRANSITIONS=281} [2024-06-27 18:23:06,467 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2024-06-27 18:23:06,467 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 281 transitions, 3045 flow [2024-06-27 18:23:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:06,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:06,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:06,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:23:06,468 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 18:23:06,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:06,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1326725624, now seen corresponding path program 3 times [2024-06-27 18:23:06,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:06,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85451915] [2024-06-27 18:23:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:06,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:07,373 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 18:23:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85451915] [2024-06-27 18:23:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85451915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:07,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592720002] [2024-06-27 18:23:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:07,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:07,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:07,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 281 transitions, 3045 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:07,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:07,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:07,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:08,830 INFO L124 PetriNetUnfolderBase]: 5827/9248 cut-off events. [2024-06-27 18:23:08,830 INFO L125 PetriNetUnfolderBase]: For 173801/173862 co-relation queries the response was YES. [2024-06-27 18:23:08,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51665 conditions, 9248 events. 5827/9248 cut-off events. For 173801/173862 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 57883 event pairs, 1440 based on Foata normal form. 34/8990 useless extension candidates. Maximal degree in co-relation 51599. Up to 7804 conditions per place. [2024-06-27 18:23:08,913 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 247 selfloop transitions, 93 changer transitions 0/351 dead transitions. [2024-06-27 18:23:08,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 351 transitions, 4243 flow [2024-06-27 18:23:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:23:08,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:23:08,915 INFO L175 Difference]: Start difference. First operand has 156 places, 281 transitions, 3045 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:23:08,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 351 transitions, 4243 flow [2024-06-27 18:23:09,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 351 transitions, 4075 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:09,200 INFO L231 Difference]: Finished difference. Result has 160 places, 291 transitions, 3292 flow [2024-06-27 18:23:09,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3292, PETRI_PLACES=160, PETRI_TRANSITIONS=291} [2024-06-27 18:23:09,201 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-06-27 18:23:09,201 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 291 transitions, 3292 flow [2024-06-27 18:23:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:09,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:09,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:09,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:23:09,202 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:09,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -470025681, now seen corresponding path program 4 times [2024-06-27 18:23:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815859832] [2024-06-27 18:23:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:10,131 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 18:23:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815859832] [2024-06-27 18:23:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815859832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:10,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970343248] [2024-06-27 18:23:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:10,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:23:10,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 291 transitions, 3292 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 18:23:10,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:10,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:23:10,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:11,676 INFO L124 PetriNetUnfolderBase]: 5624/8909 cut-off events. [2024-06-27 18:23:11,677 INFO L125 PetriNetUnfolderBase]: For 206768/206816 co-relation queries the response was YES. [2024-06-27 18:23:11,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53556 conditions, 8909 events. 5624/8909 cut-off events. For 206768/206816 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 56296 event pairs, 1336 based on Foata normal form. 42/8714 useless extension candidates. Maximal degree in co-relation 53488. Up to 7056 conditions per place. [2024-06-27 18:23:11,771 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 182 selfloop transitions, 138 changer transitions 0/340 dead transitions. [2024-06-27 18:23:11,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 340 transitions, 4188 flow [2024-06-27 18:23:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:23:11,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 18:23:11,773 INFO L175 Difference]: Start difference. First operand has 160 places, 291 transitions, 3292 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:23:11,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 340 transitions, 4188 flow [2024-06-27 18:23:12,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 340 transitions, 4001 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:12,150 INFO L231 Difference]: Finished difference. Result has 163 places, 294 transitions, 3489 flow [2024-06-27 18:23:12,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3489, PETRI_PLACES=163, PETRI_TRANSITIONS=294} [2024-06-27 18:23:12,150 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 18:23:12,151 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 294 transitions, 3489 flow [2024-06-27 18:23:12,151 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 18:23:12,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:12,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:23:12,151 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 18:23:12,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1592749334, now seen corresponding path program 4 times [2024-06-27 18:23:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:12,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679109278] [2024-06-27 18:23:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:12,996 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 18:23:12,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679109278] [2024-06-27 18:23:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679109278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:12,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343994478] [2024-06-27 18:23:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:12,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:12,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:13,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:13,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 294 transitions, 3489 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:13,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:13,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:13,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:14,508 INFO L124 PetriNetUnfolderBase]: 5981/9327 cut-off events. [2024-06-27 18:23:14,508 INFO L125 PetriNetUnfolderBase]: For 207808/207869 co-relation queries the response was YES. [2024-06-27 18:23:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55678 conditions, 9327 events. 5981/9327 cut-off events. For 207808/207869 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57455 event pairs, 1559 based on Foata normal form. 34/9126 useless extension candidates. Maximal degree in co-relation 55608. Up to 8276 conditions per place. [2024-06-27 18:23:14,605 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 289 selfloop transitions, 57 changer transitions 0/357 dead transitions. [2024-06-27 18:23:14,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 4533 flow [2024-06-27 18:23:14,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:23:14,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:23:14,607 INFO L175 Difference]: Start difference. First operand has 163 places, 294 transitions, 3489 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:23:14,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 4533 flow [2024-06-27 18:23:15,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 357 transitions, 4181 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:15,045 INFO L231 Difference]: Finished difference. Result has 168 places, 300 transitions, 3415 flow [2024-06-27 18:23:15,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3415, PETRI_PLACES=168, PETRI_TRANSITIONS=300} [2024-06-27 18:23:15,047 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-06-27 18:23:15,048 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 300 transitions, 3415 flow [2024-06-27 18:23:15,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:15,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:15,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:23:15,048 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 18:23:15,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1585340024, now seen corresponding path program 5 times [2024-06-27 18:23:15,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295127718] [2024-06-27 18:23:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:15,942 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 18:23:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295127718] [2024-06-27 18:23:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295127718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:15,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:15,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337205703] [2024-06-27 18:23:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:15,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:15,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:16,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 300 transitions, 3415 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:16,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:16,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:17,496 INFO L124 PetriNetUnfolderBase]: 5973/9324 cut-off events. [2024-06-27 18:23:17,496 INFO L125 PetriNetUnfolderBase]: For 199078/199118 co-relation queries the response was YES. [2024-06-27 18:23:17,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54131 conditions, 9324 events. 5973/9324 cut-off events. For 199078/199118 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57510 event pairs, 1535 based on Foata normal form. 20/9106 useless extension candidates. Maximal degree in co-relation 54058. Up to 8156 conditions per place. [2024-06-27 18:23:17,587 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 265 selfloop transitions, 92 changer transitions 0/368 dead transitions. [2024-06-27 18:23:17,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 368 transitions, 4466 flow [2024-06-27 18:23:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-06-27 18:23:17,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758220502901354 [2024-06-27 18:23:17,595 INFO L175 Difference]: Start difference. First operand has 168 places, 300 transitions, 3415 flow. Second operand 11 states and 246 transitions. [2024-06-27 18:23:17,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 368 transitions, 4466 flow [2024-06-27 18:23:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 368 transitions, 4232 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:18,012 INFO L231 Difference]: Finished difference. Result has 175 places, 303 transitions, 3445 flow [2024-06-27 18:23:18,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3445, PETRI_PLACES=175, PETRI_TRANSITIONS=303} [2024-06-27 18:23:18,012 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-27 18:23:18,012 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 303 transitions, 3445 flow [2024-06-27 18:23:18,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:18,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:18,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:23:18,013 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:18,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash -314226496, now seen corresponding path program 2 times [2024-06-27 18:23:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691951768] [2024-06-27 18:23:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:18,476 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 18:23:18,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691951768] [2024-06-27 18:23:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691951768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:18,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751375067] [2024-06-27 18:23:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:18,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:23:18,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 303 transitions, 3445 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:18,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:18,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:23:18,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:19,986 INFO L124 PetriNetUnfolderBase]: 6358/9867 cut-off events. [2024-06-27 18:23:19,987 INFO L125 PetriNetUnfolderBase]: For 203668/203678 co-relation queries the response was YES. [2024-06-27 18:23:20,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56182 conditions, 9867 events. 6358/9867 cut-off events. For 203668/203678 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 59461 event pairs, 1860 based on Foata normal form. 11/9620 useless extension candidates. Maximal degree in co-relation 56107. Up to 9014 conditions per place. [2024-06-27 18:23:20,079 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 290 selfloop transitions, 27 changer transitions 0/324 dead transitions. [2024-06-27 18:23:20,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 324 transitions, 4193 flow [2024-06-27 18:23:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 18:23:20,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-06-27 18:23:20,080 INFO L175 Difference]: Start difference. First operand has 175 places, 303 transitions, 3445 flow. Second operand 6 states and 129 transitions. [2024-06-27 18:23:20,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 324 transitions, 4193 flow [2024-06-27 18:23:20,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 324 transitions, 4000 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:20,361 INFO L231 Difference]: Finished difference. Result has 174 places, 303 transitions, 3312 flow [2024-06-27 18:23:20,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3312, PETRI_PLACES=174, PETRI_TRANSITIONS=303} [2024-06-27 18:23:20,361 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 18:23:20,361 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 303 transitions, 3312 flow [2024-06-27 18:23:20,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:20,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:20,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:23:20,362 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:20,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash -343310177, now seen corresponding path program 1 times [2024-06-27 18:23:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:20,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432407094] [2024-06-27 18:23:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:20,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:20,862 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 18:23:20,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:20,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432407094] [2024-06-27 18:23:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432407094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:20,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240030752] [2024-06-27 18:23:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:20,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:20,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:20,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:20,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:20,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 303 transitions, 3312 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:23:20,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:20,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:20,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:22,148 INFO L124 PetriNetUnfolderBase]: 5657/8830 cut-off events. [2024-06-27 18:23:22,148 INFO L125 PetriNetUnfolderBase]: For 178781/178781 co-relation queries the response was YES. [2024-06-27 18:23:22,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50247 conditions, 8830 events. 5657/8830 cut-off events. For 178781/178781 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53688 event pairs, 1511 based on Foata normal form. 1/8656 useless extension candidates. Maximal degree in co-relation 50170. Up to 8056 conditions per place. [2024-06-27 18:23:22,222 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 310 selfloop transitions, 21 changer transitions 0/339 dead transitions. [2024-06-27 18:23:22,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 339 transitions, 4271 flow [2024-06-27 18:23:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:23:22,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:23:22,224 INFO L175 Difference]: Start difference. First operand has 174 places, 303 transitions, 3312 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:23:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 339 transitions, 4271 flow [2024-06-27 18:23:22,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 339 transitions, 4192 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:22,515 INFO L231 Difference]: Finished difference. Result has 176 places, 313 transitions, 3406 flow [2024-06-27 18:23:22,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3406, PETRI_PLACES=176, PETRI_TRANSITIONS=313} [2024-06-27 18:23:22,515 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 123 predicate places. [2024-06-27 18:23:22,515 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 313 transitions, 3406 flow [2024-06-27 18:23:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:23:22,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:22,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:22,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:23:22,516 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:22,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash -280258773, now seen corresponding path program 2 times [2024-06-27 18:23:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894728982] [2024-06-27 18:23:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:22,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:23,011 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 18:23:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894728982] [2024-06-27 18:23:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894728982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:23,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099199711] [2024-06-27 18:23:23,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:23,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:23,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 313 transitions, 3406 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:23:23,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:23,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:23,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:24,481 INFO L124 PetriNetUnfolderBase]: 5654/8832 cut-off events. [2024-06-27 18:23:24,481 INFO L125 PetriNetUnfolderBase]: For 189377/189377 co-relation queries the response was YES. [2024-06-27 18:23:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51485 conditions, 8832 events. 5654/8832 cut-off events. For 189377/189377 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53623 event pairs, 1579 based on Foata normal form. 1/8657 useless extension candidates. Maximal degree in co-relation 51406. Up to 8082 conditions per place. [2024-06-27 18:23:24,562 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 310 selfloop transitions, 13 changer transitions 0/331 dead transitions. [2024-06-27 18:23:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 331 transitions, 4131 flow [2024-06-27 18:23:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 18:23:24,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-27 18:23:24,564 INFO L175 Difference]: Start difference. First operand has 176 places, 313 transitions, 3406 flow. Second operand 6 states and 128 transitions. [2024-06-27 18:23:24,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 331 transitions, 4131 flow [2024-06-27 18:23:24,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 331 transitions, 4030 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:24,887 INFO L231 Difference]: Finished difference. Result has 178 places, 313 transitions, 3337 flow [2024-06-27 18:23:24,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3337, PETRI_PLACES=178, PETRI_TRANSITIONS=313} [2024-06-27 18:23:24,888 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-27 18:23:24,888 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 313 transitions, 3337 flow [2024-06-27 18:23:24,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:23:24,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:24,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:24,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:23:24,888 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 18:23:24,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1568333812, now seen corresponding path program 1 times [2024-06-27 18:23:24,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432345917] [2024-06-27 18:23:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432345917] [2024-06-27 18:23:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432345917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617116064] [2024-06-27 18:23:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:25,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:25,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 313 transitions, 3337 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:25,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:25,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:25,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:27,729 INFO L124 PetriNetUnfolderBase]: 6313/9811 cut-off events. [2024-06-27 18:23:27,729 INFO L125 PetriNetUnfolderBase]: For 242791/242839 co-relation queries the response was YES. [2024-06-27 18:23:27,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58077 conditions, 9811 events. 6313/9811 cut-off events. For 242791/242839 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 60365 event pairs, 1668 based on Foata normal form. 20/9562 useless extension candidates. Maximal degree in co-relation 57998. Up to 8543 conditions per place. [2024-06-27 18:23:27,826 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 326 selfloop transitions, 47 changer transitions 0/387 dead transitions. [2024-06-27 18:23:27,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 387 transitions, 4433 flow [2024-06-27 18:23:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:27,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 18:23:27,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-27 18:23:27,841 INFO L175 Difference]: Start difference. First operand has 178 places, 313 transitions, 3337 flow. Second operand 10 states and 239 transitions. [2024-06-27 18:23:27,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 387 transitions, 4433 flow [2024-06-27 18:23:28,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 387 transitions, 4398 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:28,268 INFO L231 Difference]: Finished difference. Result has 186 places, 323 transitions, 3563 flow [2024-06-27 18:23:28,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3563, PETRI_PLACES=186, PETRI_TRANSITIONS=323} [2024-06-27 18:23:28,269 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-06-27 18:23:28,269 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 323 transitions, 3563 flow [2024-06-27 18:23:28,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:28,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:28,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:23:28,269 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:28,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2039654198, now seen corresponding path program 2 times [2024-06-27 18:23:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:28,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485668637] [2024-06-27 18:23:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:29,365 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 18:23:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485668637] [2024-06-27 18:23:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485668637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942097461] [2024-06-27 18:23:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:29,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:29,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:29,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 323 transitions, 3563 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:29,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:29,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:29,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:31,191 INFO L124 PetriNetUnfolderBase]: 6572/10198 cut-off events. [2024-06-27 18:23:31,192 INFO L125 PetriNetUnfolderBase]: For 266684/266732 co-relation queries the response was YES. [2024-06-27 18:23:31,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61761 conditions, 10198 events. 6572/10198 cut-off events. For 266684/266732 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62960 event pairs, 1693 based on Foata normal form. 20/9954 useless extension candidates. Maximal degree in co-relation 61680. Up to 8757 conditions per place. [2024-06-27 18:23:31,297 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 307 selfloop transitions, 79 changer transitions 0/400 dead transitions. [2024-06-27 18:23:31,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 400 transitions, 4762 flow [2024-06-27 18:23:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 18:23:31,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-27 18:23:31,299 INFO L175 Difference]: Start difference. First operand has 186 places, 323 transitions, 3563 flow. Second operand 10 states and 239 transitions. [2024-06-27 18:23:31,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 400 transitions, 4762 flow [2024-06-27 18:23:31,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 400 transitions, 4629 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:31,814 INFO L231 Difference]: Finished difference. Result has 192 places, 337 transitions, 3845 flow [2024-06-27 18:23:31,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3845, PETRI_PLACES=192, PETRI_TRANSITIONS=337} [2024-06-27 18:23:31,814 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 18:23:31,814 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 337 transitions, 3845 flow [2024-06-27 18:23:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:31,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:31,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:31,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:23:31,815 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 917034326, now seen corresponding path program 3 times [2024-06-27 18:23:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127680156] [2024-06-27 18:23:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:32,610 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 18:23:32,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:32,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127680156] [2024-06-27 18:23:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127680156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:32,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:32,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135852789] [2024-06-27 18:23:32,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:32,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:32,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:32,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:32,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 337 transitions, 3845 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:32,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:32,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:32,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:34,643 INFO L124 PetriNetUnfolderBase]: 7012/10875 cut-off events. [2024-06-27 18:23:34,644 INFO L125 PetriNetUnfolderBase]: For 306880/306928 co-relation queries the response was YES. [2024-06-27 18:23:34,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67373 conditions, 10875 events. 7012/10875 cut-off events. For 306880/306928 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67581 event pairs, 1708 based on Foata normal form. 16/10593 useless extension candidates. Maximal degree in co-relation 67289. Up to 8305 conditions per place. [2024-06-27 18:23:34,770 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 296 selfloop transitions, 100 changer transitions 0/410 dead transitions. [2024-06-27 18:23:34,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 410 transitions, 5212 flow [2024-06-27 18:23:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:23:34,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 18:23:34,777 INFO L175 Difference]: Start difference. First operand has 192 places, 337 transitions, 3845 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:23:34,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 410 transitions, 5212 flow [2024-06-27 18:23:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 410 transitions, 4999 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:35,401 INFO L231 Difference]: Finished difference. Result has 196 places, 348 transitions, 4110 flow [2024-06-27 18:23:35,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4110, PETRI_PLACES=196, PETRI_TRANSITIONS=348} [2024-06-27 18:23:35,402 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 143 predicate places. [2024-06-27 18:23:35,402 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 348 transitions, 4110 flow [2024-06-27 18:23:35,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:35,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:35,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:23:35,403 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:35,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash 910539206, now seen corresponding path program 4 times [2024-06-27 18:23:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179601422] [2024-06-27 18:23:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179601422] [2024-06-27 18:23:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179601422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677584540] [2024-06-27 18:23:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:36,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:36,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 348 transitions, 4110 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:36,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:36,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:36,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:38,414 INFO L124 PetriNetUnfolderBase]: 7110/11041 cut-off events. [2024-06-27 18:23:38,415 INFO L125 PetriNetUnfolderBase]: For 326588/326636 co-relation queries the response was YES. [2024-06-27 18:23:38,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69594 conditions, 11041 events. 7110/11041 cut-off events. For 326588/326636 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 68968 event pairs, 1826 based on Foata normal form. 20/10785 useless extension candidates. Maximal degree in co-relation 69508. Up to 9413 conditions per place. [2024-06-27 18:23:38,530 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 313 selfloop transitions, 94 changer transitions 0/421 dead transitions. [2024-06-27 18:23:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 421 transitions, 5353 flow [2024-06-27 18:23:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:23:38,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 18:23:38,534 INFO L175 Difference]: Start difference. First operand has 196 places, 348 transitions, 4110 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:23:38,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 421 transitions, 5353 flow [2024-06-27 18:23:39,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 421 transitions, 5223 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:39,114 INFO L231 Difference]: Finished difference. Result has 203 places, 357 transitions, 4395 flow [2024-06-27 18:23:39,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3985, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4395, PETRI_PLACES=203, PETRI_TRANSITIONS=357} [2024-06-27 18:23:39,115 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-27 18:23:39,115 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 357 transitions, 4395 flow [2024-06-27 18:23:39,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:23:39,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:39,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:39,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:23:39,115 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:39,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1046181464, now seen corresponding path program 1 times [2024-06-27 18:23:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049384732] [2024-06-27 18:23:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:39,685 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 18:23:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:39,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049384732] [2024-06-27 18:23:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049384732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:39,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051244736] [2024-06-27 18:23:39,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:39,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:23:39,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 357 transitions, 4395 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:39,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:39,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:23:39,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:41,768 INFO L124 PetriNetUnfolderBase]: 7439/11456 cut-off events. [2024-06-27 18:23:41,768 INFO L125 PetriNetUnfolderBase]: For 321132/321132 co-relation queries the response was YES. [2024-06-27 18:23:41,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71683 conditions, 11456 events. 7439/11456 cut-off events. For 321132/321132 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 70207 event pairs, 2103 based on Foata normal form. 2/11207 useless extension candidates. Maximal degree in co-relation 71594. Up to 10547 conditions per place. [2024-06-27 18:23:41,879 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 46 changer transitions 0/411 dead transitions. [2024-06-27 18:23:41,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 411 transitions, 5662 flow [2024-06-27 18:23:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:23:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:23:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:23:41,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 18:23:41,881 INFO L175 Difference]: Start difference. First operand has 203 places, 357 transitions, 4395 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:23:41,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 411 transitions, 5662 flow [2024-06-27 18:23:42,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 411 transitions, 5411 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:42,509 INFO L231 Difference]: Finished difference. Result has 206 places, 376 transitions, 4561 flow [2024-06-27 18:23:42,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4561, PETRI_PLACES=206, PETRI_TRANSITIONS=376} [2024-06-27 18:23:42,510 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2024-06-27 18:23:42,510 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 376 transitions, 4561 flow [2024-06-27 18:23:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:42,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:42,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:23:42,511 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1472944001, now seen corresponding path program 1 times [2024-06-27 18:23:42,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:42,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810789770] [2024-06-27 18:23:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:42,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:42,995 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 18:23:42,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810789770] [2024-06-27 18:23:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810789770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802069228] [2024-06-27 18:23:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:43,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:23:43,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 376 transitions, 4561 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:43,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:43,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:23:43,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:45,116 INFO L124 PetriNetUnfolderBase]: 7459/11510 cut-off events. [2024-06-27 18:23:45,116 INFO L125 PetriNetUnfolderBase]: For 323185/323185 co-relation queries the response was YES. [2024-06-27 18:23:45,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72189 conditions, 11510 events. 7459/11510 cut-off events. For 323185/323185 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 70429 event pairs, 2108 based on Foata normal form. 1/11250 useless extension candidates. Maximal degree in co-relation 72097. Up to 10603 conditions per place. [2024-06-27 18:23:45,223 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 371 selfloop transitions, 43 changer transitions 0/421 dead transitions. [2024-06-27 18:23:45,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 421 transitions, 5827 flow [2024-06-27 18:23:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:23:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:23:45,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:23:45,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-06-27 18:23:45,224 INFO L175 Difference]: Start difference. First operand has 206 places, 376 transitions, 4561 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:23:45,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 421 transitions, 5827 flow [2024-06-27 18:23:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 421 transitions, 5677 flow, removed 74 selfloop flow, removed 1 redundant places. [2024-06-27 18:23:45,837 INFO L231 Difference]: Finished difference. Result has 213 places, 385 transitions, 4658 flow [2024-06-27 18:23:45,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4435, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4658, PETRI_PLACES=213, PETRI_TRANSITIONS=385} [2024-06-27 18:23:45,839 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-27 18:23:45,839 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 385 transitions, 4658 flow [2024-06-27 18:23:45,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:45,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:45,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:45,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:23:45,840 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:45,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:45,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1046509754, now seen corresponding path program 2 times [2024-06-27 18:23:45,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:45,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158041424] [2024-06-27 18:23:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:45,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158041424] [2024-06-27 18:23:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158041424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:46,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047998908] [2024-06-27 18:23:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:46,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:23:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 385 transitions, 4658 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:46,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:46,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:23:46,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:48,304 INFO L124 PetriNetUnfolderBase]: 7489/11520 cut-off events. [2024-06-27 18:23:48,304 INFO L125 PetriNetUnfolderBase]: For 337252/337252 co-relation queries the response was YES. [2024-06-27 18:23:48,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73451 conditions, 11520 events. 7489/11520 cut-off events. For 337252/337252 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 70319 event pairs, 2117 based on Foata normal form. 2/11272 useless extension candidates. Maximal degree in co-relation 73355. Up to 10601 conditions per place. [2024-06-27 18:23:48,646 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 365 selfloop transitions, 49 changer transitions 0/421 dead transitions. [2024-06-27 18:23:48,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 421 transitions, 5752 flow [2024-06-27 18:23:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:23:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:23:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:23:48,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-27 18:23:48,653 INFO L175 Difference]: Start difference. First operand has 213 places, 385 transitions, 4658 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:23:48,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 421 transitions, 5752 flow [2024-06-27 18:23:49,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 421 transitions, 5695 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:49,350 INFO L231 Difference]: Finished difference. Result has 218 places, 390 transitions, 4779 flow [2024-06-27 18:23:49,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4601, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4779, PETRI_PLACES=218, PETRI_TRANSITIONS=390} [2024-06-27 18:23:49,352 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-06-27 18:23:49,352 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 390 transitions, 4779 flow [2024-06-27 18:23:49,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:49,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:49,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:23:49,352 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 18:23:49,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2130826378, now seen corresponding path program 5 times [2024-06-27 18:23:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436437849] [2024-06-27 18:23:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:50,221 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 18:23:50,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436437849] [2024-06-27 18:23:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436437849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14962529] [2024-06-27 18:23:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:50,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:50,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 390 transitions, 4779 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:50,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:50,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:50,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:52,274 INFO L124 PetriNetUnfolderBase]: 7315/11418 cut-off events. [2024-06-27 18:23:52,274 INFO L125 PetriNetUnfolderBase]: For 369382/369407 co-relation queries the response was YES. [2024-06-27 18:23:52,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74124 conditions, 11418 events. 7315/11418 cut-off events. For 369382/369407 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 71811 event pairs, 1685 based on Foata normal form. 29/11187 useless extension candidates. Maximal degree in co-relation 74025. Up to 9632 conditions per place. [2024-06-27 18:23:52,608 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 315 selfloop transitions, 116 changer transitions 0/451 dead transitions. [2024-06-27 18:23:52,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 451 transitions, 6003 flow [2024-06-27 18:23:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:23:52,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 18:23:52,610 INFO L175 Difference]: Start difference. First operand has 218 places, 390 transitions, 4779 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:23:52,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 451 transitions, 6003 flow [2024-06-27 18:23:53,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 451 transitions, 5898 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:53,340 INFO L231 Difference]: Finished difference. Result has 224 places, 395 transitions, 5049 flow [2024-06-27 18:23:53,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5049, PETRI_PLACES=224, PETRI_TRANSITIONS=395} [2024-06-27 18:23:53,342 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 18:23:53,342 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 395 transitions, 5049 flow [2024-06-27 18:23:53,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:53,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:53,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:53,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:23:53,343 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 18:23:53,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2130587368, now seen corresponding path program 6 times [2024-06-27 18:23:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397685085] [2024-06-27 18:23:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397685085] [2024-06-27 18:23:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397685085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:54,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445191504] [2024-06-27 18:23:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:54,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:54,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:54,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 395 transitions, 5049 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:54,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:56,648 INFO L124 PetriNetUnfolderBase]: 7771/12113 cut-off events. [2024-06-27 18:23:56,648 INFO L125 PetriNetUnfolderBase]: For 416701/416728 co-relation queries the response was YES. [2024-06-27 18:23:56,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80332 conditions, 12113 events. 7771/12113 cut-off events. For 416701/416728 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76673 event pairs, 1757 based on Foata normal form. 27/11879 useless extension candidates. Maximal degree in co-relation 80232. Up to 9466 conditions per place. [2024-06-27 18:23:56,798 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 289 selfloop transitions, 157 changer transitions 0/466 dead transitions. [2024-06-27 18:23:56,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 466 transitions, 6551 flow [2024-06-27 18:23:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:23:56,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 18:23:56,817 INFO L175 Difference]: Start difference. First operand has 224 places, 395 transitions, 5049 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:23:56,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 466 transitions, 6551 flow [2024-06-27 18:23:58,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 466 transitions, 6250 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:58,024 INFO L231 Difference]: Finished difference. Result has 227 places, 405 transitions, 5312 flow [2024-06-27 18:23:58,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4748, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5312, PETRI_PLACES=227, PETRI_TRANSITIONS=405} [2024-06-27 18:23:58,027 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-06-27 18:23:58,028 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 405 transitions, 5312 flow [2024-06-27 18:23:58,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:58,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:23:58,030 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 18:23:58,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2071694052, now seen corresponding path program 7 times [2024-06-27 18:23:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927548348] [2024-06-27 18:23:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:58,827 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 18:23:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927548348] [2024-06-27 18:23:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927548348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:58,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:58,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:58,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596659900] [2024-06-27 18:23:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:58,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:58,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:58,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 405 transitions, 5312 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:58,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:58,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:01,293 INFO L124 PetriNetUnfolderBase]: 8120/12644 cut-off events. [2024-06-27 18:24:01,304 INFO L125 PetriNetUnfolderBase]: For 466071/466098 co-relation queries the response was YES. [2024-06-27 18:24:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85797 conditions, 12644 events. 8120/12644 cut-off events. For 466071/466098 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 80717 event pairs, 1779 based on Foata normal form. 27/12410 useless extension candidates. Maximal degree in co-relation 85695. Up to 10028 conditions per place. [2024-06-27 18:24:01,449 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 296 selfloop transitions, 162 changer transitions 0/478 dead transitions. [2024-06-27 18:24:01,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 478 transitions, 6904 flow [2024-06-27 18:24:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:24:01,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 18:24:01,461 INFO L175 Difference]: Start difference. First operand has 227 places, 405 transitions, 5312 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:24:01,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 478 transitions, 6904 flow [2024-06-27 18:24:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 478 transitions, 6723 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:02,582 INFO L231 Difference]: Finished difference. Result has 234 places, 416 transitions, 5765 flow [2024-06-27 18:24:02,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5131, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5765, PETRI_PLACES=234, PETRI_TRANSITIONS=416} [2024-06-27 18:24:02,583 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 18:24:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 416 transitions, 5765 flow [2024-06-27 18:24:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:02,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:24:02,584 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 18:24:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1469291710, now seen corresponding path program 8 times [2024-06-27 18:24:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137789848] [2024-06-27 18:24:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:03,403 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 18:24:03,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:03,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137789848] [2024-06-27 18:24:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137789848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750301024] [2024-06-27 18:24:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:03,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:03,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 416 transitions, 5765 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:03,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:03,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:03,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:06,060 INFO L124 PetriNetUnfolderBase]: 8195/12761 cut-off events. [2024-06-27 18:24:06,061 INFO L125 PetriNetUnfolderBase]: For 487300/487327 co-relation queries the response was YES. [2024-06-27 18:24:06,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88006 conditions, 12761 events. 8195/12761 cut-off events. For 487300/487327 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 81668 event pairs, 1848 based on Foata normal form. 31/12531 useless extension candidates. Maximal degree in co-relation 87901. Up to 10972 conditions per place. [2024-06-27 18:24:06,208 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 336 selfloop transitions, 120 changer transitions 0/476 dead transitions. [2024-06-27 18:24:06,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 476 transitions, 7061 flow [2024-06-27 18:24:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:24:06,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 18:24:06,210 INFO L175 Difference]: Start difference. First operand has 234 places, 416 transitions, 5765 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:24:06,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 476 transitions, 7061 flow [2024-06-27 18:24:07,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 476 transitions, 6762 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:07,485 INFO L231 Difference]: Finished difference. Result has 238 places, 419 transitions, 5851 flow [2024-06-27 18:24:07,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5488, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5851, PETRI_PLACES=238, PETRI_TRANSITIONS=419} [2024-06-27 18:24:07,485 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 18:24:07,485 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 419 transitions, 5851 flow [2024-06-27 18:24:07,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:07,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:07,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:24:07,486 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:07,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1928054044, now seen corresponding path program 9 times [2024-06-27 18:24:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820419028] [2024-06-27 18:24:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:08,226 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 18:24:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820419028] [2024-06-27 18:24:08,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820419028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:08,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:08,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:08,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631940501] [2024-06-27 18:24:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:08,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:08,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:08,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:08,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:08,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:08,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 419 transitions, 5851 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:08,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:08,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:08,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:10,529 INFO L124 PetriNetUnfolderBase]: 8232/12822 cut-off events. [2024-06-27 18:24:10,529 INFO L125 PetriNetUnfolderBase]: For 477809/477836 co-relation queries the response was YES. [2024-06-27 18:24:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87898 conditions, 12822 events. 8232/12822 cut-off events. For 477809/477836 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 81732 event pairs, 1620 based on Foata normal form. 27/12588 useless extension candidates. Maximal degree in co-relation 87791. Up to 7791 conditions per place. [2024-06-27 18:24:10,699 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 266 selfloop transitions, 203 changer transitions 0/489 dead transitions. [2024-06-27 18:24:10,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 489 transitions, 7429 flow [2024-06-27 18:24:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:24:10,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:24:10,701 INFO L175 Difference]: Start difference. First operand has 238 places, 419 transitions, 5851 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:24:10,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 489 transitions, 7429 flow [2024-06-27 18:24:12,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 7138 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:12,085 INFO L231 Difference]: Finished difference. Result has 241 places, 426 transitions, 6216 flow [2024-06-27 18:24:12,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5560, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6216, PETRI_PLACES=241, PETRI_TRANSITIONS=426} [2024-06-27 18:24:12,085 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 18:24:12,086 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 426 transitions, 6216 flow [2024-06-27 18:24:12,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:12,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:12,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:24:12,086 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:12,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1430294714, now seen corresponding path program 3 times [2024-06-27 18:24:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414959638] [2024-06-27 18:24:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:12,638 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 18:24:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414959638] [2024-06-27 18:24:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414959638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344295049] [2024-06-27 18:24:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:12,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:24:12,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 426 transitions, 6216 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:12,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:24:12,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:15,050 INFO L124 PetriNetUnfolderBase]: 8558/13165 cut-off events. [2024-06-27 18:24:15,051 INFO L125 PetriNetUnfolderBase]: For 487113/487119 co-relation queries the response was YES. [2024-06-27 18:24:15,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90625 conditions, 13165 events. 8558/13165 cut-off events. For 487113/487119 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 82368 event pairs, 2445 based on Foata normal form. 8/12920 useless extension candidates. Maximal degree in co-relation 90516. Up to 12237 conditions per place. [2024-06-27 18:24:15,224 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 394 selfloop transitions, 49 changer transitions 0/450 dead transitions. [2024-06-27 18:24:15,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 450 transitions, 7198 flow [2024-06-27 18:24:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:24:15,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45288753799392095 [2024-06-27 18:24:15,226 INFO L175 Difference]: Start difference. First operand has 241 places, 426 transitions, 6216 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:24:15,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 450 transitions, 7198 flow [2024-06-27 18:24:16,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 450 transitions, 6459 flow, removed 115 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:16,489 INFO L231 Difference]: Finished difference. Result has 241 places, 426 transitions, 5582 flow [2024-06-27 18:24:16,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5477, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5582, PETRI_PLACES=241, PETRI_TRANSITIONS=426} [2024-06-27 18:24:16,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 18:24:16,490 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 426 transitions, 5582 flow [2024-06-27 18:24:16,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:16,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:16,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:24:16,491 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1151085641, now seen corresponding path program 2 times [2024-06-27 18:24:16,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193346502] [2024-06-27 18:24:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:16,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:17,046 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 18:24:17,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:17,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193346502] [2024-06-27 18:24:17,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193346502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:17,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:17,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:17,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018265703] [2024-06-27 18:24:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:17,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:24:17,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 426 transitions, 5582 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:17,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:17,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:24:17,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:19,485 INFO L124 PetriNetUnfolderBase]: 8578/13185 cut-off events. [2024-06-27 18:24:19,485 INFO L125 PetriNetUnfolderBase]: For 458351/458361 co-relation queries the response was YES. [2024-06-27 18:24:19,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87258 conditions, 13185 events. 8578/13185 cut-off events. For 458351/458361 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 82253 event pairs, 2442 based on Foata normal form. 11/12944 useless extension candidates. Maximal degree in co-relation 87149. Up to 12297 conditions per place. [2024-06-27 18:24:19,642 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 404 selfloop transitions, 46 changer transitions 0/457 dead transitions. [2024-06-27 18:24:19,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 457 transitions, 6820 flow [2024-06-27 18:24:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 18:24:19,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45896656534954405 [2024-06-27 18:24:19,643 INFO L175 Difference]: Start difference. First operand has 241 places, 426 transitions, 5582 flow. Second operand 7 states and 151 transitions. [2024-06-27 18:24:19,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 457 transitions, 6820 flow [2024-06-27 18:24:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 457 transitions, 6681 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:20,923 INFO L231 Difference]: Finished difference. Result has 243 places, 429 transitions, 5586 flow [2024-06-27 18:24:20,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5586, PETRI_PLACES=243, PETRI_TRANSITIONS=429} [2024-06-27 18:24:20,924 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 18:24:20,924 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 429 transitions, 5586 flow [2024-06-27 18:24:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:20,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:20,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:20,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:24:20,925 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1150640171, now seen corresponding path program 3 times [2024-06-27 18:24:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26277351] [2024-06-27 18:24:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:21,473 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 18:24:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26277351] [2024-06-27 18:24:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26277351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104875305] [2024-06-27 18:24:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:21,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:24:21,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 429 transitions, 5586 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:21,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:21,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:24:21,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:23,981 INFO L124 PetriNetUnfolderBase]: 8575/13175 cut-off events. [2024-06-27 18:24:23,981 INFO L125 PetriNetUnfolderBase]: For 467189/467199 co-relation queries the response was YES. [2024-06-27 18:24:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87380 conditions, 13175 events. 8575/13175 cut-off events. For 467189/467199 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 82179 event pairs, 2440 based on Foata normal form. 11/12936 useless extension candidates. Maximal degree in co-relation 87270. Up to 12294 conditions per place. [2024-06-27 18:24:24,138 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 400 selfloop transitions, 48 changer transitions 0/455 dead transitions. [2024-06-27 18:24:24,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 455 transitions, 6646 flow [2024-06-27 18:24:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:24:24,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45288753799392095 [2024-06-27 18:24:24,139 INFO L175 Difference]: Start difference. First operand has 243 places, 429 transitions, 5586 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:24:24,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 455 transitions, 6646 flow [2024-06-27 18:24:25,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 455 transitions, 6438 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:25,431 INFO L231 Difference]: Finished difference. Result has 245 places, 429 transitions, 5484 flow [2024-06-27 18:24:25,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5484, PETRI_PLACES=245, PETRI_TRANSITIONS=429} [2024-06-27 18:24:25,432 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 18:24:25,432 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 429 transitions, 5484 flow [2024-06-27 18:24:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:25,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:25,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:24:25,432 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:25,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2052799908, now seen corresponding path program 1 times [2024-06-27 18:24:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443336560] [2024-06-27 18:24:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443336560] [2024-06-27 18:24:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443336560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:26,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:26,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:26,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322768634] [2024-06-27 18:24:26,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:26,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:26,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:26,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 429 transitions, 5484 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:26,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:26,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:26,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:28,439 INFO L124 PetriNetUnfolderBase]: 8196/12801 cut-off events. [2024-06-27 18:24:28,439 INFO L125 PetriNetUnfolderBase]: For 425757/425757 co-relation queries the response was YES. [2024-06-27 18:24:28,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83112 conditions, 12801 events. 8196/12801 cut-off events. For 425757/425757 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 82449 event pairs, 2103 based on Foata normal form. 1/12514 useless extension candidates. Maximal degree in co-relation 83002. Up to 11805 conditions per place. [2024-06-27 18:24:28,608 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 432 selfloop transitions, 21 changer transitions 0/465 dead transitions. [2024-06-27 18:24:28,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 465 transitions, 6610 flow [2024-06-27 18:24:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:24:28,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-27 18:24:28,610 INFO L175 Difference]: Start difference. First operand has 245 places, 429 transitions, 5484 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:24:28,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 465 transitions, 6610 flow [2024-06-27 18:24:29,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 465 transitions, 6517 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:29,516 INFO L231 Difference]: Finished difference. Result has 247 places, 432 transitions, 5506 flow [2024-06-27 18:24:29,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5506, PETRI_PLACES=247, PETRI_TRANSITIONS=432} [2024-06-27 18:24:29,516 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-06-27 18:24:29,517 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 432 transitions, 5506 flow [2024-06-27 18:24:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:29,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:29,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:29,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:24:29,517 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:29,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1224749524, now seen corresponding path program 2 times [2024-06-27 18:24:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:29,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037156913] [2024-06-27 18:24:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:30,026 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 18:24:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037156913] [2024-06-27 18:24:30,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037156913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:30,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:30,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888966774] [2024-06-27 18:24:30,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:30,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:30,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:30,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 432 transitions, 5506 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:30,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:30,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:30,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:32,413 INFO L124 PetriNetUnfolderBase]: 8224/12843 cut-off events. [2024-06-27 18:24:32,413 INFO L125 PetriNetUnfolderBase]: For 441712/441712 co-relation queries the response was YES. [2024-06-27 18:24:32,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84437 conditions, 12843 events. 8224/12843 cut-off events. For 441712/441712 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 82709 event pairs, 2106 based on Foata normal form. 1/12555 useless extension candidates. Maximal degree in co-relation 84326. Up to 11786 conditions per place. [2024-06-27 18:24:32,549 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 426 selfloop transitions, 33 changer transitions 0/471 dead transitions. [2024-06-27 18:24:32,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 471 transitions, 6878 flow [2024-06-27 18:24:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:24:32,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 18:24:32,551 INFO L175 Difference]: Start difference. First operand has 247 places, 432 transitions, 5506 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:24:32,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 471 transitions, 6878 flow [2024-06-27 18:24:33,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 471 transitions, 6772 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:33,596 INFO L231 Difference]: Finished difference. Result has 248 places, 438 transitions, 5610 flow [2024-06-27 18:24:33,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5400, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5610, PETRI_PLACES=248, PETRI_TRANSITIONS=438} [2024-06-27 18:24:33,596 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-27 18:24:33,597 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 438 transitions, 5610 flow [2024-06-27 18:24:33,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:33,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:33,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:33,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:24:33,597 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:33,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1224749710, now seen corresponding path program 1 times [2024-06-27 18:24:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:33,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460871401] [2024-06-27 18:24:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:34,176 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 18:24:34,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:34,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460871401] [2024-06-27 18:24:34,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460871401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:34,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:34,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52462901] [2024-06-27 18:24:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:34,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:34,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:34,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 438 transitions, 5610 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:34,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:34,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:36,719 INFO L124 PetriNetUnfolderBase]: 8296/12953 cut-off events. [2024-06-27 18:24:36,720 INFO L125 PetriNetUnfolderBase]: For 462137/462137 co-relation queries the response was YES. [2024-06-27 18:24:36,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86072 conditions, 12953 events. 8296/12953 cut-off events. For 462137/462137 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 83431 event pairs, 2106 based on Foata normal form. 2/12663 useless extension candidates. Maximal degree in co-relation 85960. Up to 11872 conditions per place. [2024-06-27 18:24:36,881 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 441 selfloop transitions, 31 changer transitions 0/484 dead transitions. [2024-06-27 18:24:36,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 484 transitions, 7005 flow [2024-06-27 18:24:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:24:36,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 18:24:36,882 INFO L175 Difference]: Start difference. First operand has 248 places, 438 transitions, 5610 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:24:36,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 484 transitions, 7005 flow [2024-06-27 18:24:37,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 484 transitions, 6933 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:37,942 INFO L231 Difference]: Finished difference. Result has 253 places, 450 transitions, 5768 flow [2024-06-27 18:24:37,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5538, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5768, PETRI_PLACES=253, PETRI_TRANSITIONS=450} [2024-06-27 18:24:37,943 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 200 predicate places. [2024-06-27 18:24:37,943 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 450 transitions, 5768 flow [2024-06-27 18:24:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:37,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:37,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:37,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:24:37,944 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:37,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash -97820248, now seen corresponding path program 2 times [2024-06-27 18:24:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720720477] [2024-06-27 18:24:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:38,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:38,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720720477] [2024-06-27 18:24:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720720477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:38,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:38,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599473961] [2024-06-27 18:24:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:38,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:38,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:38,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 450 transitions, 5768 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:38,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:38,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:38,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:40,898 INFO L124 PetriNetUnfolderBase]: 8326/13009 cut-off events. [2024-06-27 18:24:40,899 INFO L125 PetriNetUnfolderBase]: For 480470/480470 co-relation queries the response was YES. [2024-06-27 18:24:41,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88310 conditions, 13009 events. 8326/13009 cut-off events. For 480470/480470 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 83635 event pairs, 2253 based on Foata normal form. 2/12718 useless extension candidates. Maximal degree in co-relation 88195. Up to 11987 conditions per place. [2024-06-27 18:24:41,141 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 444 selfloop transitions, 19 changer transitions 0/475 dead transitions. [2024-06-27 18:24:41,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 475 transitions, 6837 flow [2024-06-27 18:24:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 18:24:41,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-06-27 18:24:41,142 INFO L175 Difference]: Start difference. First operand has 253 places, 450 transitions, 5768 flow. Second operand 7 states and 147 transitions. [2024-06-27 18:24:41,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 475 transitions, 6837 flow [2024-06-27 18:24:42,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 475 transitions, 6780 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:42,868 INFO L231 Difference]: Finished difference. Result has 258 places, 453 transitions, 5804 flow [2024-06-27 18:24:42,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5804, PETRI_PLACES=258, PETRI_TRANSITIONS=453} [2024-06-27 18:24:42,869 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 205 predicate places. [2024-06-27 18:24:42,869 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 453 transitions, 5804 flow [2024-06-27 18:24:42,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:42,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:42,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:24:42,869 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 18:24:42,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:42,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1150900168, now seen corresponding path program 3 times [2024-06-27 18:24:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640394142] [2024-06-27 18:24:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:43,439 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 18:24:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640394142] [2024-06-27 18:24:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640394142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:43,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757604492] [2024-06-27 18:24:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:43,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:43,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 453 transitions, 5804 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:43,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:43,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:43,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:45,868 INFO L124 PetriNetUnfolderBase]: 8320/12998 cut-off events. [2024-06-27 18:24:45,868 INFO L125 PetriNetUnfolderBase]: For 486957/486957 co-relation queries the response was YES. [2024-06-27 18:24:45,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88263 conditions, 12998 events. 8320/12998 cut-off events. For 486957/486957 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 83593 event pairs, 2243 based on Foata normal form. 2/12709 useless extension candidates. Maximal degree in co-relation 88145. Up to 11943 conditions per place. [2024-06-27 18:24:46,041 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 443 selfloop transitions, 24 changer transitions 0/479 dead transitions. [2024-06-27 18:24:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 479 transitions, 6897 flow [2024-06-27 18:24:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:24:46,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2024-06-27 18:24:46,042 INFO L175 Difference]: Start difference. First operand has 258 places, 453 transitions, 5804 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:24:46,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 479 transitions, 6897 flow [2024-06-27 18:24:47,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 479 transitions, 6818 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:47,726 INFO L231 Difference]: Finished difference. Result has 260 places, 453 transitions, 5779 flow [2024-06-27 18:24:47,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5725, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5779, PETRI_PLACES=260, PETRI_TRANSITIONS=453} [2024-06-27 18:24:47,727 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-27 18:24:47,727 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 453 transitions, 5779 flow [2024-06-27 18:24:47,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:47,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:47,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:47,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:24:47,728 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 18:24:47,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1150900354, now seen corresponding path program 3 times [2024-06-27 18:24:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:47,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202582983] [2024-06-27 18:24:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202582983] [2024-06-27 18:24:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202582983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:48,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937072074] [2024-06-27 18:24:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:48,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:48,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 453 transitions, 5779 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:48,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:48,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:48,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:51,496 INFO L124 PetriNetUnfolderBase]: 8334/13017 cut-off events. [2024-06-27 18:24:51,497 INFO L125 PetriNetUnfolderBase]: For 493139/493139 co-relation queries the response was YES. [2024-06-27 18:24:51,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88371 conditions, 13017 events. 8334/13017 cut-off events. For 493139/493139 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 83751 event pairs, 2246 based on Foata normal form. 1/12725 useless extension candidates. Maximal degree in co-relation 88253. Up to 12006 conditions per place. [2024-06-27 18:24:51,640 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 449 selfloop transitions, 16 changer transitions 0/477 dead transitions. [2024-06-27 18:24:51,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 477 transitions, 6860 flow [2024-06-27 18:24:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 18:24:51,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2024-06-27 18:24:51,641 INFO L175 Difference]: Start difference. First operand has 260 places, 453 transitions, 5779 flow. Second operand 7 states and 148 transitions. [2024-06-27 18:24:51,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 477 transitions, 6860 flow [2024-06-27 18:24:53,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 477 transitions, 6756 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:53,069 INFO L231 Difference]: Finished difference. Result has 261 places, 453 transitions, 5713 flow [2024-06-27 18:24:53,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5713, PETRI_PLACES=261, PETRI_TRANSITIONS=453} [2024-06-27 18:24:53,069 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 18:24:53,069 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 453 transitions, 5713 flow [2024-06-27 18:24:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:53,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:53,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:53,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:24:53,075 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:53,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash 141401644, now seen corresponding path program 1 times [2024-06-27 18:24:53,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:53,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419837469] [2024-06-27 18:24:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:54,067 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 18:24:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419837469] [2024-06-27 18:24:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419837469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:54,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:54,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:24:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219831374] [2024-06-27 18:24:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:54,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:24:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:24:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:24:54,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:54,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 453 transitions, 5713 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:24:54,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:54,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:54,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:57,210 INFO L124 PetriNetUnfolderBase]: 8607/13271 cut-off events. [2024-06-27 18:24:57,210 INFO L125 PetriNetUnfolderBase]: For 586906/586980 co-relation queries the response was YES. [2024-06-27 18:24:57,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92921 conditions, 13271 events. 8607/13271 cut-off events. For 586906/586980 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83586 event pairs, 1787 based on Foata normal form. 18/12986 useless extension candidates. Maximal degree in co-relation 92802. Up to 12012 conditions per place. [2024-06-27 18:24:57,389 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 455 selfloop transitions, 40 changer transitions 0/518 dead transitions. [2024-06-27 18:24:57,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 518 transitions, 7000 flow [2024-06-27 18:24:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-27 18:24:57,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2024-06-27 18:24:57,391 INFO L175 Difference]: Start difference. First operand has 261 places, 453 transitions, 5713 flow. Second operand 10 states and 232 transitions. [2024-06-27 18:24:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 518 transitions, 7000 flow [2024-06-27 18:24:58,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 518 transitions, 6943 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:58,893 INFO L231 Difference]: Finished difference. Result has 266 places, 458 transitions, 5855 flow [2024-06-27 18:24:58,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5656, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5855, PETRI_PLACES=266, PETRI_TRANSITIONS=458} [2024-06-27 18:24:58,894 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-27 18:24:58,894 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 458 transitions, 5855 flow [2024-06-27 18:24:58,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:24:58,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:58,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:24:58,894 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:58,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 200531974, now seen corresponding path program 2 times [2024-06-27 18:24:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497027240] [2024-06-27 18:24:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:00,065 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 18:25:00,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497027240] [2024-06-27 18:25:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497027240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:00,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:00,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:25:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614302596] [2024-06-27 18:25:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:25:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:25:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:25:00,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:00,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 458 transitions, 5855 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:25:00,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:00,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:00,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:03,279 INFO L124 PetriNetUnfolderBase]: 8653/13287 cut-off events. [2024-06-27 18:25:03,279 INFO L125 PetriNetUnfolderBase]: For 609848/609918 co-relation queries the response was YES. [2024-06-27 18:25:03,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94807 conditions, 13287 events. 8653/13287 cut-off events. For 609848/609918 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 83844 event pairs, 2131 based on Foata normal form. 18/13051 useless extension candidates. Maximal degree in co-relation 94686. Up to 12019 conditions per place. [2024-06-27 18:25:03,594 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 441 selfloop transitions, 59 changer transitions 0/523 dead transitions. [2024-06-27 18:25:03,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 523 transitions, 7171 flow [2024-06-27 18:25:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-27 18:25:03,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 18:25:03,596 INFO L175 Difference]: Start difference. First operand has 266 places, 458 transitions, 5855 flow. Second operand 10 states and 234 transitions. [2024-06-27 18:25:03,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 523 transitions, 7171 flow [2024-06-27 18:25:05,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 523 transitions, 7014 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:05,317 INFO L231 Difference]: Finished difference. Result has 271 places, 462 transitions, 5956 flow [2024-06-27 18:25:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5956, PETRI_PLACES=271, PETRI_TRANSITIONS=462} [2024-06-27 18:25:05,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 218 predicate places. [2024-06-27 18:25:05,318 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 462 transitions, 5956 flow [2024-06-27 18:25:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:25:05,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:05,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:25:05,318 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:05,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 44869511, now seen corresponding path program 1 times [2024-06-27 18:25:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883071793] [2024-06-27 18:25:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:05,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:06,159 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 18:25:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883071793] [2024-06-27 18:25:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883071793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826468704] [2024-06-27 18:25:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:06,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:06,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:06,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 462 transitions, 5956 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:06,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:06,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:06,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:09,508 INFO L124 PetriNetUnfolderBase]: 8864/13584 cut-off events. [2024-06-27 18:25:09,508 INFO L125 PetriNetUnfolderBase]: For 640990/641060 co-relation queries the response was YES. [2024-06-27 18:25:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96747 conditions, 13584 events. 8864/13584 cut-off events. For 640990/641060 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 85795 event pairs, 2080 based on Foata normal form. 22/13313 useless extension candidates. Maximal degree in co-relation 96623. Up to 11474 conditions per place. [2024-06-27 18:25:09,688 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 395 selfloop transitions, 103 changer transitions 0/521 dead transitions. [2024-06-27 18:25:09,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 521 transitions, 7281 flow [2024-06-27 18:25:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:25:09,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 18:25:09,690 INFO L175 Difference]: Start difference. First operand has 271 places, 462 transitions, 5956 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:25:09,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 521 transitions, 7281 flow [2024-06-27 18:25:11,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 521 transitions, 7110 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:11,488 INFO L231 Difference]: Finished difference. Result has 274 places, 466 transitions, 6142 flow [2024-06-27 18:25:11,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6142, PETRI_PLACES=274, PETRI_TRANSITIONS=466} [2024-06-27 18:25:11,489 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-06-27 18:25:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 466 transitions, 6142 flow [2024-06-27 18:25:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:11,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:11,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:11,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:25:11,489 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 200387824, now seen corresponding path program 3 times [2024-06-27 18:25:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178573946] [2024-06-27 18:25:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:12,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178573946] [2024-06-27 18:25:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178573946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:12,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:25:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135596416] [2024-06-27 18:25:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:12,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:25:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:12,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:25:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:25:12,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 466 transitions, 6142 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:25:12,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:12,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:16,135 INFO L124 PetriNetUnfolderBase]: 8904/13684 cut-off events. [2024-06-27 18:25:16,135 INFO L125 PetriNetUnfolderBase]: For 647706/647776 co-relation queries the response was YES. [2024-06-27 18:25:16,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97921 conditions, 13684 events. 8904/13684 cut-off events. For 647706/647776 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 86890 event pairs, 2208 based on Foata normal form. 18/13446 useless extension candidates. Maximal degree in co-relation 97796. Up to 12349 conditions per place. [2024-06-27 18:25:16,324 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 446 selfloop transitions, 63 changer transitions 0/532 dead transitions. [2024-06-27 18:25:16,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 532 transitions, 7489 flow [2024-06-27 18:25:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:25:16,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:25:16,326 INFO L175 Difference]: Start difference. First operand has 274 places, 466 transitions, 6142 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:25:16,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 532 transitions, 7489 flow [2024-06-27 18:25:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 532 transitions, 7242 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:18,935 INFO L231 Difference]: Finished difference. Result has 278 places, 471 transitions, 6165 flow [2024-06-27 18:25:18,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6165, PETRI_PLACES=278, PETRI_TRANSITIONS=471} [2024-06-27 18:25:18,936 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 225 predicate places. [2024-06-27 18:25:18,936 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 471 transitions, 6165 flow [2024-06-27 18:25:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:25:18,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:18,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:25:18,937 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:18,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1924567704, now seen corresponding path program 1 times [2024-06-27 18:25:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218277639] [2024-06-27 18:25:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:19,458 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 18:25:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218277639] [2024-06-27 18:25:19,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218277639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:19,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423437799] [2024-06-27 18:25:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:19,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:25:19,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 471 transitions, 6165 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:19,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:25:19,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:22,809 INFO L124 PetriNetUnfolderBase]: 9235/14090 cut-off events. [2024-06-27 18:25:22,810 INFO L125 PetriNetUnfolderBase]: For 646557/646557 co-relation queries the response was YES. [2024-06-27 18:25:22,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99335 conditions, 14090 events. 9235/14090 cut-off events. For 646557/646557 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 88452 event pairs, 2448 based on Foata normal form. 1/13863 useless extension candidates. Maximal degree in co-relation 99208. Up to 13309 conditions per place. [2024-06-27 18:25:23,030 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 479 selfloop transitions, 32 changer transitions 0/518 dead transitions. [2024-06-27 18:25:23,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 518 transitions, 7707 flow [2024-06-27 18:25:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:25:23,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-27 18:25:23,031 INFO L175 Difference]: Start difference. First operand has 278 places, 471 transitions, 6165 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:25:23,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 518 transitions, 7707 flow [2024-06-27 18:25:25,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 518 transitions, 7477 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:25,051 INFO L231 Difference]: Finished difference. Result has 278 places, 484 transitions, 6245 flow [2024-06-27 18:25:25,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6245, PETRI_PLACES=278, PETRI_TRANSITIONS=484} [2024-06-27 18:25:25,052 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 225 predicate places. [2024-06-27 18:25:25,052 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 484 transitions, 6245 flow [2024-06-27 18:25:25,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:25,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:25,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:25:25,052 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:25,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1917931224, now seen corresponding path program 2 times [2024-06-27 18:25:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210715286] [2024-06-27 18:25:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:25,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210715286] [2024-06-27 18:25:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210715286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130407913] [2024-06-27 18:25:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:25,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:25,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 18:25:25,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 484 transitions, 6245 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:25,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:25,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 18:25:25,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand