./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:28:43,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:28:43,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:28:43,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:28:43,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:28:43,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:28:43,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:28:43,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:28:43,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:28:43,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:28:43,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:28:43,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:28:43,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:28:43,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:28:43,146 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:28:43,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:28:43,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:28:43,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:28:43,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:28:43,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:28:43,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:28:43,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:28:43,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:28:43,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:28:43,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:28:43,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:28:43,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:28:43,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:28:43,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:28:43,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:28:43,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:28:43,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:28:43,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:43,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:28:43,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:28:43,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:28:43,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:28:43,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:28:43,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:28:43,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:28:43,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:28:43,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:28:43,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:28:43,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:28:43,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:28:43,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:28:43,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:28:43,381 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:28:43,381 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:28:43,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml [2024-06-27 18:28:43,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:28:43,574 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:28:43,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-27 18:28:44,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:28:44,746 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:28:44,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-27 18:28:44,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7320044ee/d69d0634dde04cf5b1cf684695b906a2/FLAG353dacc15 [2024-06-27 18:28:44,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7320044ee/d69d0634dde04cf5b1cf684695b906a2 [2024-06-27 18:28:44,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:28:44,769 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:28:44,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:44,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:28:44,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:28:44,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:43" (1/2) ... [2024-06-27 18:28:44,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dea2f2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:44, skipping insertion in model container [2024-06-27 18:28:44,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:43" (1/2) ... [2024-06-27 18:28:44,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1780da67 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:44, skipping insertion in model container [2024-06-27 18:28:44,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:44" (2/2) ... [2024-06-27 18:28:44,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dea2f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:44, skipping insertion in model container [2024-06-27 18:28:44,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:44" (2/2) ... [2024-06-27 18:28:44,777 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:28:44,909 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:28:44,910 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-27 18:28:44,910 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-27 18:28:44,910 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-27 18:28:44,911 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:28:44,911 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-27 18:28:44,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:28:45,069 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/mix035_power.opt_rmo.opt.i[1001,1014] [2024-06-27 18:28:45,217 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:45,226 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:28:45,251 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/mix035_power.opt_rmo.opt.i[1001,1014] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:28:45,304 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:45,336 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:28:45,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45 WrapperNode [2024-06-27 18:28:45,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:45,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:45,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:28:45,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:28:45,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,404 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 18:28:45,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:45,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:28:45,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:28:45,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:28:45,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,445 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 18:28:45,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:28:45,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:28:45,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:28:45,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:28:45,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (1/1) ... [2024-06-27 18:28:45,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:28:45,561 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 18:28:45,563 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 18:28:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:28:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:28:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:28:45,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:28:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:28:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:28:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:28:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:28:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:28:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:28:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:28:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:28:45,589 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 18:28:45,690 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:28:45,691 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:28:45,955 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:28:45,955 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:28:46,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:28:46,125 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:28:46,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:46 BoogieIcfgContainer [2024-06-27 18:28:46,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:28:46,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:28:46,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:28:46,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:28:46,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:43" (1/4) ... [2024-06-27 18:28:46,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73087ea3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:46, skipping insertion in model container [2024-06-27 18:28:46,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:28:44" (2/4) ... [2024-06-27 18:28:46,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73087ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:46, skipping insertion in model container [2024-06-27 18:28:46,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:45" (3/4) ... [2024-06-27 18:28:46,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73087ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:46, skipping insertion in model container [2024-06-27 18:28:46,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:46" (4/4) ... [2024-06-27 18:28:46,135 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035_power.opt_rmo.opt.i [2024-06-27 18:28:46,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:28:46,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:28:46,149 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:28:46,192 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:28:46,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:28:46,248 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:28:46,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:46,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:28:46,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:28:46,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:28:46,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:28:46,269 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;@12302c91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:28:46,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:28:46,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:28:46,272 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:28:46,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:46,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:46,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:46,273 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 18:28:46,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 354490088, now seen corresponding path program 1 times [2024-06-27 18:28:46,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366196825] [2024-06-27 18:28:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366196825] [2024-06-27 18:28:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366196825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:47,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547113728] [2024-06-27 18:28:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:47,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:47,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 18:28:47,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:47,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:47,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 18:28:47,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:47,769 INFO L124 PetriNetUnfolderBase]: 3133/5195 cut-off events. [2024-06-27 18:28:47,769 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:28:47,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 5195 events. 3133/5195 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 33736 event pairs, 2504 based on Foata normal form. 151/4853 useless extension candidates. Maximal degree in co-relation 9791. Up to 4519 conditions per place. [2024-06-27 18:28:47,799 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 40 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:28:47,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 223 flow [2024-06-27 18:28:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-27 18:28:47,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-06-27 18:28:47,811 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 101 transitions. [2024-06-27 18:28:47,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 223 flow [2024-06-27 18:28:47,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:47,818 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:28:47,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:28:47,822 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:28:47,823 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:28:47,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:47,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:47,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:47,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:28:47,823 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 18:28:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1362801817, now seen corresponding path program 1 times [2024-06-27 18:28:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061677590] [2024-06-27 18:28:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061677590] [2024-06-27 18:28:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061677590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:48,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:28:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082087864] [2024-06-27 18:28:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:48,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:28:48,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:28:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:28:48,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 18:28:48,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:48,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:48,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 18:28:48,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:48,992 INFO L124 PetriNetUnfolderBase]: 3640/5844 cut-off events. [2024-06-27 18:28:48,992 INFO L125 PetriNetUnfolderBase]: For 786/786 co-relation queries the response was YES. [2024-06-27 18:28:49,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12479 conditions, 5844 events. 3640/5844 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36555 event pairs, 1645 based on Foata normal form. 6/5372 useless extension candidates. Maximal degree in co-relation 12467. Up to 5184 conditions per place. [2024-06-27 18:28:49,024 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:28:49,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 323 flow [2024-06-27 18:28:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:28:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:28:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:28:49,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-27 18:28:49,026 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:28:49,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 323 flow [2024-06-27 18:28:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:49,028 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-27 18:28:49,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:28:49,029 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:28:49,029 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-27 18:28:49,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:49,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:28:49,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:49,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash -709970708, now seen corresponding path program 1 times [2024-06-27 18:28:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614549981] [2024-06-27 18:28:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:49,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614549981] [2024-06-27 18:28:49,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614549981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:49,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581020319] [2024-06-27 18:28:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:49,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:49,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 18:28:49,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:49,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 18:28:49,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:49,300 INFO L124 PetriNetUnfolderBase]: 906/1932 cut-off events. [2024-06-27 18:28:49,300 INFO L125 PetriNetUnfolderBase]: For 452/524 co-relation queries the response was YES. [2024-06-27 18:28:49,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 1932 events. 906/1932 cut-off events. For 452/524 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13821 event pairs, 335 based on Foata normal form. 7/1800 useless extension candidates. Maximal degree in co-relation 3834. Up to 1169 conditions per place. [2024-06-27 18:28:49,310 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 30 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-06-27 18:28:49,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 252 flow [2024-06-27 18:28:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 18:28:49,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-06-27 18:28:49,314 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 3 states and 111 transitions. [2024-06-27 18:28:49,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 252 flow [2024-06-27 18:28:49,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 238 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:49,317 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 152 flow [2024-06-27 18:28:49,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 18:28:49,318 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 18:28:49,318 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 152 flow [2024-06-27 18:28:49,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:49,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:49,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:28:49,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:49,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -865870784, now seen corresponding path program 1 times [2024-06-27 18:28:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328437251] [2024-06-27 18:28:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328437251] [2024-06-27 18:28:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328437251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772858721] [2024-06-27 18:28:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:50,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:50,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 18:28:50,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:50,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 18:28:50,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:50,812 INFO L124 PetriNetUnfolderBase]: 2985/4585 cut-off events. [2024-06-27 18:28:50,813 INFO L125 PetriNetUnfolderBase]: For 2539/2539 co-relation queries the response was YES. [2024-06-27 18:28:50,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10954 conditions, 4585 events. 2985/4585 cut-off events. For 2539/2539 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26581 event pairs, 933 based on Foata normal form. 6/4512 useless extension candidates. Maximal degree in co-relation 10940. Up to 4212 conditions per place. [2024-06-27 18:28:50,830 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 65 selfloop transitions, 12 changer transitions 5/95 dead transitions. [2024-06-27 18:28:50,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 434 flow [2024-06-27 18:28:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 18:28:50,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-06-27 18:28:50,840 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 152 flow. Second operand 6 states and 181 transitions. [2024-06-27 18:28:50,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 434 flow [2024-06-27 18:28:50,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:50,843 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 199 flow [2024-06-27 18:28:50,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-27 18:28:50,845 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 18:28:50,845 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 199 flow [2024-06-27 18:28:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:50,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:28:50,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 617951367, now seen corresponding path program 1 times [2024-06-27 18:28:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341144086] [2024-06-27 18:28:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341144086] [2024-06-27 18:28:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341144086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:51,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:51,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073176337] [2024-06-27 18:28:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:28:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:28:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:52,034 INFO L124 PetriNetUnfolderBase]: 2555/4401 cut-off events. [2024-06-27 18:28:52,035 INFO L125 PetriNetUnfolderBase]: For 3286/3286 co-relation queries the response was YES. [2024-06-27 18:28:52,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10587 conditions, 4401 events. 2555/4401 cut-off events. For 3286/3286 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 28388 event pairs, 1145 based on Foata normal form. 2/4271 useless extension candidates. Maximal degree in co-relation 10570. Up to 3686 conditions per place. [2024-06-27 18:28:52,053 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 55 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-27 18:28:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 404 flow [2024-06-27 18:28:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 18:28:52,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:28:52,054 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 199 flow. Second operand 5 states and 130 transitions. [2024-06-27 18:28:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 404 flow [2024-06-27 18:28:52,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 371 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:52,058 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 248 flow [2024-06-27 18:28:52,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 18:28:52,058 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 18:28:52,058 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 248 flow [2024-06-27 18:28:52,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:52,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:52,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:28:52,059 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 18:28:52,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1780580110, now seen corresponding path program 1 times [2024-06-27 18:28:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:52,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989160988] [2024-06-27 18:28:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:52,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:52,642 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 18:28:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989160988] [2024-06-27 18:28:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989160988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:52,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:52,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000266335] [2024-06-27 18:28:52,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:52,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:28:52,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:52,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:28:52,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:53,337 INFO L124 PetriNetUnfolderBase]: 3031/5056 cut-off events. [2024-06-27 18:28:53,338 INFO L125 PetriNetUnfolderBase]: For 5619/5619 co-relation queries the response was YES. [2024-06-27 18:28:53,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13238 conditions, 5056 events. 3031/5056 cut-off events. For 5619/5619 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 32001 event pairs, 1326 based on Foata normal form. 4/4920 useless extension candidates. Maximal degree in co-relation 13218. Up to 4319 conditions per place. [2024-06-27 18:28:53,360 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 69 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-27 18:28:53,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 517 flow [2024-06-27 18:28:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 18:28:53,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-27 18:28:53,362 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 248 flow. Second operand 6 states and 154 transitions. [2024-06-27 18:28:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 517 flow [2024-06-27 18:28:53,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 500 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:53,366 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 321 flow [2024-06-27 18:28:53,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 18:28:53,367 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 18:28:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 321 flow [2024-06-27 18:28:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:53,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:53,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:28:53,368 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 18:28:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1788774340, now seen corresponding path program 2 times [2024-06-27 18:28:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894043424] [2024-06-27 18:28:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:53,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894043424] [2024-06-27 18:28:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894043424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:53,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:53,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:53,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273917610] [2024-06-27 18:28:53,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:53,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:54,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:28:54,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:54,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:28:54,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:54,683 INFO L124 PetriNetUnfolderBase]: 3054/5101 cut-off events. [2024-06-27 18:28:54,684 INFO L125 PetriNetUnfolderBase]: For 8522/8532 co-relation queries the response was YES. [2024-06-27 18:28:54,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14475 conditions, 5101 events. 3054/5101 cut-off events. For 8522/8532 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 32254 event pairs, 1260 based on Foata normal form. 12/4970 useless extension candidates. Maximal degree in co-relation 14452. Up to 4302 conditions per place. [2024-06-27 18:28:54,704 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 67 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-27 18:28:54,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 589 flow [2024-06-27 18:28:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:28:54,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 18:28:54,706 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 321 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:28:54,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 589 flow [2024-06-27 18:28:54,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 558 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:54,712 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 364 flow [2024-06-27 18:28:54,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-27 18:28:54,713 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:28:54,713 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 364 flow [2024-06-27 18:28:54,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:54,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:54,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:28:54,714 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 18:28:54,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash 896464440, now seen corresponding path program 1 times [2024-06-27 18:28:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:54,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91926734] [2024-06-27 18:28:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:54,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91926734] [2024-06-27 18:28:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91926734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:55,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046890829] [2024-06-27 18:28:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:55,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:55,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:28:55,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:28:55,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:55,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:28:55,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,179 INFO L124 PetriNetUnfolderBase]: 3247/5444 cut-off events. [2024-06-27 18:28:56,179 INFO L125 PetriNetUnfolderBase]: For 11613/11613 co-relation queries the response was YES. [2024-06-27 18:28:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16177 conditions, 5444 events. 3247/5444 cut-off events. For 11613/11613 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 34777 event pairs, 1298 based on Foata normal form. 2/5307 useless extension candidates. Maximal degree in co-relation 16153. Up to 4616 conditions per place. [2024-06-27 18:28:56,212 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 81 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2024-06-27 18:28:56,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 745 flow [2024-06-27 18:28:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:28:56,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 18:28:56,215 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 364 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:28:56,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 745 flow [2024-06-27 18:28:56,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 114 transitions, 692 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:56,223 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 473 flow [2024-06-27 18:28:56,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=473, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 18:28:56,224 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 18:28:56,224 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 473 flow [2024-06-27 18:28:56,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:28:56,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:56,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:56,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:28:56,224 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 18:28:56,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1152897022, now seen corresponding path program 1 times [2024-06-27 18:28:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840758974] [2024-06-27 18:28:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840758974] [2024-06-27 18:28:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840758974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045374517] [2024-06-27 18:28:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:57,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:28:57,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 473 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:28:57,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:57,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:28:57,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:57,814 INFO L124 PetriNetUnfolderBase]: 3571/5892 cut-off events. [2024-06-27 18:28:57,815 INFO L125 PetriNetUnfolderBase]: For 17426/17426 co-relation queries the response was YES. [2024-06-27 18:28:57,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19181 conditions, 5892 events. 3571/5892 cut-off events. For 17426/17426 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 37785 event pairs, 1407 based on Foata normal form. 2/5737 useless extension candidates. Maximal degree in co-relation 19154. Up to 5078 conditions per place. [2024-06-27 18:28:57,849 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 93 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-27 18:28:57,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 835 flow [2024-06-27 18:28:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 18:28:57,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:28:57,851 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 473 flow. Second operand 7 states and 180 transitions. [2024-06-27 18:28:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 835 flow [2024-06-27 18:28:57,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 782 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:57,864 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 535 flow [2024-06-27 18:28:57,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-06-27 18:28:57,865 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 18:28:57,865 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 535 flow [2024-06-27 18:28:57,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:28:57,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:57,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:57,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:28:57,866 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 18:28:57,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1160531299, now seen corresponding path program 1 times [2024-06-27 18:28:57,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:57,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078908341] [2024-06-27 18:28:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:57,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:58,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:58,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078908341] [2024-06-27 18:28:58,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078908341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:58,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:58,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959774488] [2024-06-27 18:28:58,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:58,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:58,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:28:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 535 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:58,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:28:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:59,555 INFO L124 PetriNetUnfolderBase]: 3239/5408 cut-off events. [2024-06-27 18:28:59,556 INFO L125 PetriNetUnfolderBase]: For 19008/19008 co-relation queries the response was YES. [2024-06-27 18:28:59,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 5408 events. 3239/5408 cut-off events. For 19008/19008 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34443 event pairs, 1223 based on Foata normal form. 4/5269 useless extension candidates. Maximal degree in co-relation 18141. Up to 4570 conditions per place. [2024-06-27 18:28:59,588 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 97 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2024-06-27 18:28:59,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 925 flow [2024-06-27 18:28:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:28:59,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-27 18:28:59,590 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 535 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:28:59,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 925 flow [2024-06-27 18:28:59,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 868 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:59,602 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 563 flow [2024-06-27 18:28:59,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-06-27 18:28:59,602 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 18:28:59,603 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 563 flow [2024-06-27 18:28:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:59,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:59,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:59,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:28:59,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:59,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1347261896, now seen corresponding path program 1 times [2024-06-27 18:28:59,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552606074] [2024-06-27 18:28:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:00,058 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 18:29:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552606074] [2024-06-27 18:29:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552606074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:00,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:29:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143576443] [2024-06-27 18:29:00,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:29:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:29:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:29:00,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:00,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:00,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:00,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:00,773 INFO L124 PetriNetUnfolderBase]: 3236/5474 cut-off events. [2024-06-27 18:29:00,774 INFO L125 PetriNetUnfolderBase]: For 21883/21883 co-relation queries the response was YES. [2024-06-27 18:29:00,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18637 conditions, 5474 events. 3236/5474 cut-off events. For 21883/21883 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 35333 event pairs, 1321 based on Foata normal form. 1/5304 useless extension candidates. Maximal degree in co-relation 18606. Up to 4646 conditions per place. [2024-06-27 18:29:00,862 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 85 selfloop transitions, 11 changer transitions 0/107 dead transitions. [2024-06-27 18:29:00,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 815 flow [2024-06-27 18:29:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:29:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:29:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 18:29:00,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:29:00,864 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 563 flow. Second operand 5 states and 123 transitions. [2024-06-27 18:29:00,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 107 transitions, 815 flow [2024-06-27 18:29:00,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 748 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:00,876 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 551 flow [2024-06-27 18:29:00,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-06-27 18:29:00,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-27 18:29:00,877 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 551 flow [2024-06-27 18:29:00,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:29:00,878 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 18:29:00,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1275616919, now seen corresponding path program 1 times [2024-06-27 18:29:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860193824] [2024-06-27 18:29:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:01,727 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 18:29:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860193824] [2024-06-27 18:29:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860193824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:01,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:01,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:01,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902303100] [2024-06-27 18:29:01,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:01,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:01,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:01,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 551 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:01,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:01,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:02,607 INFO L124 PetriNetUnfolderBase]: 3792/6239 cut-off events. [2024-06-27 18:29:02,607 INFO L125 PetriNetUnfolderBase]: For 28215/28215 co-relation queries the response was YES. [2024-06-27 18:29:02,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22026 conditions, 6239 events. 3792/6239 cut-off events. For 28215/28215 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39511 event pairs, 1441 based on Foata normal form. 2/6085 useless extension candidates. Maximal degree in co-relation 21994. Up to 5356 conditions per place. [2024-06-27 18:29:02,639 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 112 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 18:29:02,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 1051 flow [2024-06-27 18:29:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:29:02,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 18:29:02,649 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 551 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:29:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 1051 flow [2024-06-27 18:29:02,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1020 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:02,665 INFO L231 Difference]: Finished difference. Result has 91 places, 104 transitions, 711 flow [2024-06-27 18:29:02,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=91, PETRI_TRANSITIONS=104} [2024-06-27 18:29:02,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-27 18:29:02,666 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 104 transitions, 711 flow [2024-06-27 18:29:02,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:02,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:02,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:29:02,667 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 18:29:02,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1885555073, now seen corresponding path program 2 times [2024-06-27 18:29:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127430048] [2024-06-27 18:29:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:02,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:03,500 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 18:29:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127430048] [2024-06-27 18:29:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127430048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518263048] [2024-06-27 18:29:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:03,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:03,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 711 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:03,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:03,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:04,406 INFO L124 PetriNetUnfolderBase]: 3843/6131 cut-off events. [2024-06-27 18:29:04,406 INFO L125 PetriNetUnfolderBase]: For 34414/34429 co-relation queries the response was YES. [2024-06-27 18:29:04,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23729 conditions, 6131 events. 3843/6131 cut-off events. For 34414/34429 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 37088 event pairs, 1316 based on Foata normal form. 14/6040 useless extension candidates. Maximal degree in co-relation 23694. Up to 5329 conditions per place. [2024-06-27 18:29:04,439 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 106 selfloop transitions, 47 changer transitions 0/163 dead transitions. [2024-06-27 18:29:04,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 1309 flow [2024-06-27 18:29:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:29:04,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 18:29:04,440 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 711 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:29:04,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 1309 flow [2024-06-27 18:29:04,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 163 transitions, 1206 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:04,473 INFO L231 Difference]: Finished difference. Result has 96 places, 121 transitions, 912 flow [2024-06-27 18:29:04,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=96, PETRI_TRANSITIONS=121} [2024-06-27 18:29:04,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 18:29:04,474 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 121 transitions, 912 flow [2024-06-27 18:29:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:04,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:04,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:29:04,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:04,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1786070313, now seen corresponding path program 3 times [2024-06-27 18:29:04,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:04,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933036369] [2024-06-27 18:29:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:05,292 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 18:29:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933036369] [2024-06-27 18:29:05,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933036369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:05,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:05,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:05,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675951826] [2024-06-27 18:29:05,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:05,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:05,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:05,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 912 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:05,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:05,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:05,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:06,212 INFO L124 PetriNetUnfolderBase]: 3866/5990 cut-off events. [2024-06-27 18:29:06,213 INFO L125 PetriNetUnfolderBase]: For 40261/40276 co-relation queries the response was YES. [2024-06-27 18:29:06,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24977 conditions, 5990 events. 3866/5990 cut-off events. For 40261/40276 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 35133 event pairs, 1316 based on Foata normal form. 14/5951 useless extension candidates. Maximal degree in co-relation 24940. Up to 5285 conditions per place. [2024-06-27 18:29:06,244 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 104 selfloop transitions, 57 changer transitions 0/171 dead transitions. [2024-06-27 18:29:06,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 171 transitions, 1480 flow [2024-06-27 18:29:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:29:06,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 18:29:06,245 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 912 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:29:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 171 transitions, 1480 flow [2024-06-27 18:29:06,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 171 transitions, 1383 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:06,294 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1019 flow [2024-06-27 18:29:06,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1019, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-06-27 18:29:06,294 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-27 18:29:06,295 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1019 flow [2024-06-27 18:29:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:06,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:29:06,295 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 18:29:06,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1794641193, now seen corresponding path program 4 times [2024-06-27 18:29:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288091041] [2024-06-27 18:29:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:07,133 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 18:29:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288091041] [2024-06-27 18:29:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288091041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504198212] [2024-06-27 18:29:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:07,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:07,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1019 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:07,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:08,109 INFO L124 PetriNetUnfolderBase]: 3861/5978 cut-off events. [2024-06-27 18:29:08,109 INFO L125 PetriNetUnfolderBase]: For 42195/42210 co-relation queries the response was YES. [2024-06-27 18:29:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25221 conditions, 5978 events. 3861/5978 cut-off events. For 42195/42210 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 34978 event pairs, 1318 based on Foata normal form. 14/5938 useless extension candidates. Maximal degree in co-relation 25182. Up to 5354 conditions per place. [2024-06-27 18:29:08,147 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 112 selfloop transitions, 47 changer transitions 0/169 dead transitions. [2024-06-27 18:29:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 169 transitions, 1457 flow [2024-06-27 18:29:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:29:08,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:29:08,149 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1019 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:29:08,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 169 transitions, 1457 flow [2024-06-27 18:29:08,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 169 transitions, 1359 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:08,200 INFO L231 Difference]: Finished difference. Result has 106 places, 127 transitions, 1024 flow [2024-06-27 18:29:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1024, PETRI_PLACES=106, PETRI_TRANSITIONS=127} [2024-06-27 18:29:08,201 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 18:29:08,201 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 127 transitions, 1024 flow [2024-06-27 18:29:08,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:08,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:08,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:29:08,202 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:08,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1150590493, now seen corresponding path program 1 times [2024-06-27 18:29:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106928428] [2024-06-27 18:29:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:08,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:08,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106928428] [2024-06-27 18:29:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106928428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434912932] [2024-06-27 18:29:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:08,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:08,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:08,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 127 transitions, 1024 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:08,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:08,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:08,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:09,643 INFO L124 PetriNetUnfolderBase]: 3858/6151 cut-off events. [2024-06-27 18:29:09,643 INFO L125 PetriNetUnfolderBase]: For 44401/44401 co-relation queries the response was YES. [2024-06-27 18:29:09,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 6151 events. 3858/6151 cut-off events. For 44401/44401 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 37597 event pairs, 1458 based on Foata normal form. 1/6052 useless extension candidates. Maximal degree in co-relation 25605. Up to 5506 conditions per place. [2024-06-27 18:29:09,681 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 126 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2024-06-27 18:29:09,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 150 transitions, 1384 flow [2024-06-27 18:29:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:29:09,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:29:09,682 INFO L175 Difference]: Start difference. First operand has 106 places, 127 transitions, 1024 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:29:09,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 150 transitions, 1384 flow [2024-06-27 18:29:09,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 1207 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:09,716 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 911 flow [2024-06-27 18:29:09,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=911, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-06-27 18:29:09,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 18:29:09,717 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 911 flow [2024-06-27 18:29:09,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:09,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:29:09,717 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 18:29:09,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash 770132981, now seen corresponding path program 1 times [2024-06-27 18:29:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887425449] [2024-06-27 18:29:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:10,528 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 18:29:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887425449] [2024-06-27 18:29:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887425449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440480992] [2024-06-27 18:29:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:10,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:10,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 911 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:10,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:10,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:10,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:11,584 INFO L124 PetriNetUnfolderBase]: 3938/6433 cut-off events. [2024-06-27 18:29:11,584 INFO L125 PetriNetUnfolderBase]: For 58230/58232 co-relation queries the response was YES. [2024-06-27 18:29:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28232 conditions, 6433 events. 3938/6433 cut-off events. For 58230/58232 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 41152 event pairs, 1041 based on Foata normal form. 6/6286 useless extension candidates. Maximal degree in co-relation 28193. Up to 5482 conditions per place. [2024-06-27 18:29:11,617 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 144 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-27 18:29:11,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 178 transitions, 1401 flow [2024-06-27 18:29:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:29:11,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:29:11,619 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 911 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:29:11,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 178 transitions, 1401 flow [2024-06-27 18:29:11,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 178 transitions, 1359 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:11,653 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 984 flow [2024-06-27 18:29:11,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-06-27 18:29:11,653 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-27 18:29:11,654 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 984 flow [2024-06-27 18:29:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:11,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:11,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:11,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:29:11,654 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 18:29:11,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash 773019701, now seen corresponding path program 2 times [2024-06-27 18:29:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:11,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900742540] [2024-06-27 18:29:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:12,554 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 18:29:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900742540] [2024-06-27 18:29:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900742540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659977312] [2024-06-27 18:29:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:12,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:12,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:12,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:12,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:12,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:13,547 INFO L124 PetriNetUnfolderBase]: 3929/6310 cut-off events. [2024-06-27 18:29:13,547 INFO L125 PetriNetUnfolderBase]: For 66617/66619 co-relation queries the response was YES. [2024-06-27 18:29:13,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29255 conditions, 6310 events. 3929/6310 cut-off events. For 66617/66619 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 39771 event pairs, 1251 based on Foata normal form. 6/6195 useless extension candidates. Maximal degree in co-relation 29214. Up to 5503 conditions per place. [2024-06-27 18:29:13,592 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 147 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2024-06-27 18:29:13,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 181 transitions, 1480 flow [2024-06-27 18:29:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:29:13,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 18:29:13,594 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 984 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:29:13,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 181 transitions, 1480 flow [2024-06-27 18:29:13,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 181 transitions, 1407 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:13,647 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 1004 flow [2024-06-27 18:29:13,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2024-06-27 18:29:13,648 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 18:29:13,648 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 1004 flow [2024-06-27 18:29:13,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:13,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:13,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:29:13,648 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 18:29:13,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 773025653, now seen corresponding path program 1 times [2024-06-27 18:29:13,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:13,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968760780] [2024-06-27 18:29:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:13,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968760780] [2024-06-27 18:29:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968760780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071690795] [2024-06-27 18:29:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:14,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:14,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 1004 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:14,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:14,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:14,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:15,836 INFO L124 PetriNetUnfolderBase]: 4222/6685 cut-off events. [2024-06-27 18:29:15,836 INFO L125 PetriNetUnfolderBase]: For 73074/73074 co-relation queries the response was YES. [2024-06-27 18:29:15,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30480 conditions, 6685 events. 4222/6685 cut-off events. For 73074/73074 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41273 event pairs, 1324 based on Foata normal form. 2/6561 useless extension candidates. Maximal degree in co-relation 30438. Up to 5915 conditions per place. [2024-06-27 18:29:15,876 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 161 selfloop transitions, 31 changer transitions 0/203 dead transitions. [2024-06-27 18:29:15,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 203 transitions, 1719 flow [2024-06-27 18:29:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 18:29:15,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-06-27 18:29:15,878 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 1004 flow. Second operand 10 states and 239 transitions. [2024-06-27 18:29:15,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 203 transitions, 1719 flow [2024-06-27 18:29:15,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 203 transitions, 1641 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:15,927 INFO L231 Difference]: Finished difference. Result has 118 places, 151 transitions, 1216 flow [2024-06-27 18:29:15,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=118, PETRI_TRANSITIONS=151} [2024-06-27 18:29:15,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 18:29:15,928 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 151 transitions, 1216 flow [2024-06-27 18:29:15,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:15,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:15,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:15,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:29:15,929 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:15,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 889204601, now seen corresponding path program 3 times [2024-06-27 18:29:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300914507] [2024-06-27 18:29:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:16,812 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 18:29:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300914507] [2024-06-27 18:29:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300914507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389956218] [2024-06-27 18:29:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:16,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:16,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 151 transitions, 1216 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:16,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:16,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:16,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:17,848 INFO L124 PetriNetUnfolderBase]: 4031/6486 cut-off events. [2024-06-27 18:29:17,848 INFO L125 PetriNetUnfolderBase]: For 87385/87387 co-relation queries the response was YES. [2024-06-27 18:29:17,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31794 conditions, 6486 events. 4031/6486 cut-off events. For 87385/87387 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 41127 event pairs, 1215 based on Foata normal form. 10/6378 useless extension candidates. Maximal degree in co-relation 31748. Up to 5611 conditions per place. [2024-06-27 18:29:17,902 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 162 selfloop transitions, 20 changer transitions 0/198 dead transitions. [2024-06-27 18:29:17,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 198 transitions, 1771 flow [2024-06-27 18:29:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:29:17,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 18:29:17,903 INFO L175 Difference]: Start difference. First operand has 118 places, 151 transitions, 1216 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:29:17,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 198 transitions, 1771 flow [2024-06-27 18:29:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 198 transitions, 1624 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:17,995 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 1197 flow [2024-06-27 18:29:17,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1197, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-06-27 18:29:17,996 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-27 18:29:17,996 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 1197 flow [2024-06-27 18:29:17,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:17,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:17,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:29:17,996 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 18:29:17,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 889420082, now seen corresponding path program 1 times [2024-06-27 18:29:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:17,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354369802] [2024-06-27 18:29:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:18,928 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 18:29:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354369802] [2024-06-27 18:29:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354369802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:18,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273212951] [2024-06-27 18:29:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:19,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:19,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:19,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:19,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:19,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:20,062 INFO L124 PetriNetUnfolderBase]: 4336/6891 cut-off events. [2024-06-27 18:29:20,062 INFO L125 PetriNetUnfolderBase]: For 93865/93865 co-relation queries the response was YES. [2024-06-27 18:29:20,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33370 conditions, 6891 events. 4336/6891 cut-off events. For 93865/93865 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 42987 event pairs, 1315 based on Foata normal form. 4/6758 useless extension candidates. Maximal degree in co-relation 33321. Up to 6066 conditions per place. [2024-06-27 18:29:20,107 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 169 selfloop transitions, 30 changer transitions 0/210 dead transitions. [2024-06-27 18:29:20,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 210 transitions, 1791 flow [2024-06-27 18:29:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:29:20,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:29:20,108 INFO L175 Difference]: Start difference. First operand has 123 places, 155 transitions, 1197 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:29:20,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 210 transitions, 1791 flow [2024-06-27 18:29:20,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 1706 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:20,198 INFO L231 Difference]: Finished difference. Result has 127 places, 157 transitions, 1225 flow [2024-06-27 18:29:20,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=127, PETRI_TRANSITIONS=157} [2024-06-27 18:29:20,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 18:29:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 157 transitions, 1225 flow [2024-06-27 18:29:20,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:20,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:20,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:20,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:29:20,199 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 18:29:20,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1877828507, now seen corresponding path program 2 times [2024-06-27 18:29:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774211257] [2024-06-27 18:29:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:21,226 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 18:29:21,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774211257] [2024-06-27 18:29:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774211257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:21,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:21,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500231657] [2024-06-27 18:29:21,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:21,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:21,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:21,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:21,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 157 transitions, 1225 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:21,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:21,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:21,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:22,600 INFO L124 PetriNetUnfolderBase]: 4394/6955 cut-off events. [2024-06-27 18:29:22,600 INFO L125 PetriNetUnfolderBase]: For 99417/99417 co-relation queries the response was YES. [2024-06-27 18:29:22,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34264 conditions, 6955 events. 4394/6955 cut-off events. For 99417/99417 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 43121 event pairs, 1307 based on Foata normal form. 2/6828 useless extension candidates. Maximal degree in co-relation 34214. Up to 6008 conditions per place. [2024-06-27 18:29:22,657 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 152 selfloop transitions, 62 changer transitions 0/225 dead transitions. [2024-06-27 18:29:22,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 225 transitions, 2139 flow [2024-06-27 18:29:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:29:22,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:29:22,658 INFO L175 Difference]: Start difference. First operand has 127 places, 157 transitions, 1225 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:29:22,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 225 transitions, 2139 flow [2024-06-27 18:29:22,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 225 transitions, 2001 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:22,750 INFO L231 Difference]: Finished difference. Result has 129 places, 171 transitions, 1520 flow [2024-06-27 18:29:22,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1520, PETRI_PLACES=129, PETRI_TRANSITIONS=171} [2024-06-27 18:29:22,750 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 18:29:22,751 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 1520 flow [2024-06-27 18:29:22,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:22,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:22,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:22,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:29:22,751 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 18:29:22,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1877835947, now seen corresponding path program 3 times [2024-06-27 18:29:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:22,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527188569] [2024-06-27 18:29:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:22,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:23,744 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 18:29:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527188569] [2024-06-27 18:29:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527188569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413983047] [2024-06-27 18:29:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:23,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:23,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:23,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 171 transitions, 1520 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:23,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:23,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:23,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:24,866 INFO L124 PetriNetUnfolderBase]: 4435/7018 cut-off events. [2024-06-27 18:29:24,866 INFO L125 PetriNetUnfolderBase]: For 106847/106847 co-relation queries the response was YES. [2024-06-27 18:29:24,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35440 conditions, 7018 events. 4435/7018 cut-off events. For 106847/106847 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 43633 event pairs, 1341 based on Foata normal form. 2/6888 useless extension candidates. Maximal degree in co-relation 35389. Up to 6200 conditions per place. [2024-06-27 18:29:24,924 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 191 selfloop transitions, 27 changer transitions 0/229 dead transitions. [2024-06-27 18:29:24,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 229 transitions, 2211 flow [2024-06-27 18:29:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:29:24,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:29:24,925 INFO L175 Difference]: Start difference. First operand has 129 places, 171 transitions, 1520 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:29:24,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 229 transitions, 2211 flow [2024-06-27 18:29:25,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 229 transitions, 2057 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:25,107 INFO L231 Difference]: Finished difference. Result has 136 places, 179 transitions, 1551 flow [2024-06-27 18:29:25,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1551, PETRI_PLACES=136, PETRI_TRANSITIONS=179} [2024-06-27 18:29:25,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 18:29:25,108 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 179 transitions, 1551 flow [2024-06-27 18:29:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:25,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:25,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:25,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:29:25,108 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 18:29:25,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash 889210553, now seen corresponding path program 4 times [2024-06-27 18:29:25,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:25,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391819589] [2024-06-27 18:29:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:25,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:26,171 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 18:29:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391819589] [2024-06-27 18:29:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391819589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:26,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324063209] [2024-06-27 18:29:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:26,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:26,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:26,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 179 transitions, 1551 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:26,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:26,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:27,462 INFO L124 PetriNetUnfolderBase]: 4435/7014 cut-off events. [2024-06-27 18:29:27,463 INFO L125 PetriNetUnfolderBase]: For 104044/104044 co-relation queries the response was YES. [2024-06-27 18:29:27,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34695 conditions, 7014 events. 4435/7014 cut-off events. For 104044/104044 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 43558 event pairs, 1342 based on Foata normal form. 2/6886 useless extension candidates. Maximal degree in co-relation 34641. Up to 6200 conditions per place. [2024-06-27 18:29:27,506 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 194 selfloop transitions, 27 changer transitions 0/232 dead transitions. [2024-06-27 18:29:27,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 232 transitions, 2207 flow [2024-06-27 18:29:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:29:27,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:29:27,507 INFO L175 Difference]: Start difference. First operand has 136 places, 179 transitions, 1551 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:29:27,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 232 transitions, 2207 flow [2024-06-27 18:29:27,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 232 transitions, 2053 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:27,608 INFO L231 Difference]: Finished difference. Result has 141 places, 182 transitions, 1531 flow [2024-06-27 18:29:27,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=141, PETRI_TRANSITIONS=182} [2024-06-27 18:29:27,609 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 18:29:27,609 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 182 transitions, 1531 flow [2024-06-27 18:29:27,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:27,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:27,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:27,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:29:27,609 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 18:29:27,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1921193383, now seen corresponding path program 1 times [2024-06-27 18:29:27,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:27,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167322579] [2024-06-27 18:29:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167322579] [2024-06-27 18:29:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167322579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:28,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852994768] [2024-06-27 18:29:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:28,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:28,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:28,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 182 transitions, 1531 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:28,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:28,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:29,212 INFO L124 PetriNetUnfolderBase]: 4497/7119 cut-off events. [2024-06-27 18:29:29,213 INFO L125 PetriNetUnfolderBase]: For 107706/107706 co-relation queries the response was YES. [2024-06-27 18:29:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35080 conditions, 7119 events. 4497/7119 cut-off events. For 107706/107706 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44231 event pairs, 1355 based on Foata normal form. 2/6983 useless extension candidates. Maximal degree in co-relation 35025. Up to 6278 conditions per place. [2024-06-27 18:29:29,255 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 179 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-06-27 18:29:29,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 218 transitions, 2151 flow [2024-06-27 18:29:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:29:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-27 18:29:29,256 INFO L175 Difference]: Start difference. First operand has 141 places, 182 transitions, 1531 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:29:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 218 transitions, 2151 flow [2024-06-27 18:29:29,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 218 transitions, 2083 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:29,329 INFO L231 Difference]: Finished difference. Result has 141 places, 188 transitions, 1591 flow [2024-06-27 18:29:29,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1591, PETRI_PLACES=141, PETRI_TRANSITIONS=188} [2024-06-27 18:29:29,330 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 18:29:29,330 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 188 transitions, 1591 flow [2024-06-27 18:29:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:29,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:29,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:29,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:29:29,330 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 18:29:29,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash 200483641, now seen corresponding path program 4 times [2024-06-27 18:29:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:29,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928016872] [2024-06-27 18:29:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:29,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:30,182 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 18:29:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928016872] [2024-06-27 18:29:30,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928016872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:30,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:30,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707524649] [2024-06-27 18:29:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:30,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:30,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:30,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 188 transitions, 1591 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:30,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:30,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:30,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:31,339 INFO L124 PetriNetUnfolderBase]: 4221/6761 cut-off events. [2024-06-27 18:29:31,340 INFO L125 PetriNetUnfolderBase]: For 117994/118009 co-relation queries the response was YES. [2024-06-27 18:29:31,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35119 conditions, 6761 events. 4221/6761 cut-off events. For 117994/118009 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42661 event pairs, 1150 based on Foata normal form. 20/6652 useless extension candidates. Maximal degree in co-relation 35063. Up to 5760 conditions per place. [2024-06-27 18:29:31,396 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 178 selfloop transitions, 38 changer transitions 0/235 dead transitions. [2024-06-27 18:29:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 235 transitions, 2223 flow [2024-06-27 18:29:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:29:31,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:29:31,397 INFO L175 Difference]: Start difference. First operand has 141 places, 188 transitions, 1591 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:29:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 235 transitions, 2223 flow [2024-06-27 18:29:31,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 235 transitions, 2191 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:31,511 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 1734 flow [2024-06-27 18:29:31,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-06-27 18:29:31,512 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 18:29:31,512 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 1734 flow [2024-06-27 18:29:31,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:29:31,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:31,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:29:31,512 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 18:29:31,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1430420197, now seen corresponding path program 5 times [2024-06-27 18:29:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935122516] [2024-06-27 18:29:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:32,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935122516] [2024-06-27 18:29:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935122516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:32,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954553765] [2024-06-27 18:29:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:32,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:32,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:32,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:32,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:32,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:33,695 INFO L124 PetriNetUnfolderBase]: 4520/7141 cut-off events. [2024-06-27 18:29:33,695 INFO L125 PetriNetUnfolderBase]: For 124910/124925 co-relation queries the response was YES. [2024-06-27 18:29:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36966 conditions, 7141 events. 4520/7141 cut-off events. For 124910/124925 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 44232 event pairs, 1267 based on Foata normal form. 14/7012 useless extension candidates. Maximal degree in co-relation 36907. Up to 6164 conditions per place. [2024-06-27 18:29:33,750 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 196 selfloop transitions, 46 changer transitions 0/253 dead transitions. [2024-06-27 18:29:33,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 253 transitions, 2490 flow [2024-06-27 18:29:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:29:33,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:29:33,752 INFO L175 Difference]: Start difference. First operand has 148 places, 193 transitions, 1734 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:29:33,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 253 transitions, 2490 flow [2024-06-27 18:29:33,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 253 transitions, 2355 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:33,876 INFO L231 Difference]: Finished difference. Result has 153 places, 204 transitions, 1845 flow [2024-06-27 18:29:33,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1845, PETRI_PLACES=153, PETRI_TRANSITIONS=204} [2024-06-27 18:29:33,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 18:29:33,877 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 204 transitions, 1845 flow [2024-06-27 18:29:33,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:33,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:33,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:33,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:29:33,877 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 18:29:33,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash 457199353, now seen corresponding path program 6 times [2024-06-27 18:29:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:33,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565785981] [2024-06-27 18:29:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:34,827 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 18:29:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565785981] [2024-06-27 18:29:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565785981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555489893] [2024-06-27 18:29:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:34,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:34,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 204 transitions, 1845 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:34,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:34,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:34,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:36,024 INFO L124 PetriNetUnfolderBase]: 4528/6910 cut-off events. [2024-06-27 18:29:36,024 INFO L125 PetriNetUnfolderBase]: For 132530/132530 co-relation queries the response was YES. [2024-06-27 18:29:36,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37748 conditions, 6910 events. 4528/6910 cut-off events. For 132530/132530 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40526 event pairs, 1114 based on Foata normal form. 2/6857 useless extension candidates. Maximal degree in co-relation 37687. Up to 6024 conditions per place. [2024-06-27 18:29:36,084 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 153 selfloop transitions, 105 changer transitions 0/269 dead transitions. [2024-06-27 18:29:36,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 269 transitions, 2869 flow [2024-06-27 18:29:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 18:29:36,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-27 18:29:36,085 INFO L175 Difference]: Start difference. First operand has 153 places, 204 transitions, 1845 flow. Second operand 9 states and 227 transitions. [2024-06-27 18:29:36,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 269 transitions, 2869 flow [2024-06-27 18:29:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 269 transitions, 2766 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:36,255 INFO L231 Difference]: Finished difference. Result has 160 places, 219 transitions, 2360 flow [2024-06-27 18:29:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2360, PETRI_PLACES=160, PETRI_TRANSITIONS=219} [2024-06-27 18:29:36,255 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-27 18:29:36,255 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 219 transitions, 2360 flow [2024-06-27 18:29:36,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:36,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:36,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:36,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:29:36,256 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 18:29:36,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 457199632, now seen corresponding path program 2 times [2024-06-27 18:29:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163937358] [2024-06-27 18:29:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:37,134 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 18:29:37,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:37,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163937358] [2024-06-27 18:29:37,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163937358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:37,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:37,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061915298] [2024-06-27 18:29:37,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:37,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:37,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:37,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:37,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:37,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 219 transitions, 2360 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:37,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:37,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:37,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:38,307 INFO L124 PetriNetUnfolderBase]: 4575/7030 cut-off events. [2024-06-27 18:29:38,307 INFO L125 PetriNetUnfolderBase]: For 149776/149791 co-relation queries the response was YES. [2024-06-27 18:29:38,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39887 conditions, 7030 events. 4575/7030 cut-off events. For 149776/149791 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 41671 event pairs, 1189 based on Foata normal form. 16/6979 useless extension candidates. Maximal degree in co-relation 39824. Up to 6290 conditions per place. [2024-06-27 18:29:38,368 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 204 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-27 18:29:38,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 272 transitions, 3086 flow [2024-06-27 18:29:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:29:38,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:29:38,370 INFO L175 Difference]: Start difference. First operand has 160 places, 219 transitions, 2360 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:29:38,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 272 transitions, 3086 flow [2024-06-27 18:29:38,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 272 transitions, 2826 flow, removed 120 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:38,658 INFO L231 Difference]: Finished difference. Result has 167 places, 221 transitions, 2273 flow [2024-06-27 18:29:38,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2273, PETRI_PLACES=167, PETRI_TRANSITIONS=221} [2024-06-27 18:29:38,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-27 18:29:38,659 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 221 transitions, 2273 flow [2024-06-27 18:29:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:38,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:38,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:38,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:29:38,660 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 18:29:38,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash 466722832, now seen corresponding path program 3 times [2024-06-27 18:29:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118507500] [2024-06-27 18:29:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:38,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:39,493 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 18:29:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118507500] [2024-06-27 18:29:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118507500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187505378] [2024-06-27 18:29:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:39,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:39,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:39,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:39,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 221 transitions, 2273 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:39,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:39,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:40,712 INFO L124 PetriNetUnfolderBase]: 4612/7085 cut-off events. [2024-06-27 18:29:40,712 INFO L125 PetriNetUnfolderBase]: For 153932/153947 co-relation queries the response was YES. [2024-06-27 18:29:40,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39749 conditions, 7085 events. 4612/7085 cut-off events. For 153932/153947 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 42126 event pairs, 1094 based on Foata normal form. 16/7034 useless extension candidates. Maximal degree in co-relation 39684. Up to 6111 conditions per place. [2024-06-27 18:29:40,860 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 194 selfloop transitions, 74 changer transitions 0/279 dead transitions. [2024-06-27 18:29:40,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 279 transitions, 3181 flow [2024-06-27 18:29:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:29:40,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 18:29:40,861 INFO L175 Difference]: Start difference. First operand has 167 places, 221 transitions, 2273 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:29:40,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 279 transitions, 3181 flow [2024-06-27 18:29:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 279 transitions, 3026 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:41,033 INFO L231 Difference]: Finished difference. Result has 169 places, 225 transitions, 2381 flow [2024-06-27 18:29:41,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=169, PETRI_TRANSITIONS=225} [2024-06-27 18:29:41,033 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 18:29:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 225 transitions, 2381 flow [2024-06-27 18:29:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:41,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:29:41,034 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1421215708, now seen corresponding path program 4 times [2024-06-27 18:29:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283680716] [2024-06-27 18:29:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:41,895 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 18:29:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283680716] [2024-06-27 18:29:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283680716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:41,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:41,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:41,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987028005] [2024-06-27 18:29:41,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:41,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:41,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:41,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:42,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:42,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 225 transitions, 2381 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:42,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:42,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:43,242 INFO L124 PetriNetUnfolderBase]: 4649/7151 cut-off events. [2024-06-27 18:29:43,242 INFO L125 PetriNetUnfolderBase]: For 163875/163890 co-relation queries the response was YES. [2024-06-27 18:29:43,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40751 conditions, 7151 events. 4649/7151 cut-off events. For 163875/163890 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 42598 event pairs, 1189 based on Foata normal form. 16/7100 useless extension candidates. Maximal degree in co-relation 40685. Up to 6326 conditions per place. [2024-06-27 18:29:43,308 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 200 selfloop transitions, 67 changer transitions 0/278 dead transitions. [2024-06-27 18:29:43,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 278 transitions, 3127 flow [2024-06-27 18:29:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:43,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:29:43,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:29:43,309 INFO L175 Difference]: Start difference. First operand has 169 places, 225 transitions, 2381 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:29:43,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 278 transitions, 3127 flow [2024-06-27 18:29:43,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 278 transitions, 2968 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:43,559 INFO L231 Difference]: Finished difference. Result has 173 places, 227 transitions, 2423 flow [2024-06-27 18:29:43,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2423, PETRI_PLACES=173, PETRI_TRANSITIONS=227} [2024-06-27 18:29:43,559 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 18:29:43,559 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 227 transitions, 2423 flow [2024-06-27 18:29:43,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:43,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:43,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:43,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:29:43,560 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:43,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:43,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1421215987, now seen corresponding path program 7 times [2024-06-27 18:29:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:43,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906412136] [2024-06-27 18:29:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:43,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906412136] [2024-06-27 18:29:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906412136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737616448] [2024-06-27 18:29:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:44,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:44,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:44,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 227 transitions, 2423 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:44,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:44,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:44,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:45,793 INFO L124 PetriNetUnfolderBase]: 4662/7100 cut-off events. [2024-06-27 18:29:45,794 INFO L125 PetriNetUnfolderBase]: For 167258/167258 co-relation queries the response was YES. [2024-06-27 18:29:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41005 conditions, 7100 events. 4662/7100 cut-off events. For 167258/167258 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41671 event pairs, 1123 based on Foata normal form. 2/7047 useless extension candidates. Maximal degree in co-relation 40937. Up to 6027 conditions per place. [2024-06-27 18:29:45,851 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 141 selfloop transitions, 133 changer transitions 0/285 dead transitions. [2024-06-27 18:29:45,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 285 transitions, 3403 flow [2024-06-27 18:29:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:29:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 18:29:45,852 INFO L175 Difference]: Start difference. First operand has 173 places, 227 transitions, 2423 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:29:45,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 285 transitions, 3403 flow [2024-06-27 18:29:46,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 285 transitions, 3238 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:46,033 INFO L231 Difference]: Finished difference. Result has 175 places, 233 transitions, 2698 flow [2024-06-27 18:29:46,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2698, PETRI_PLACES=175, PETRI_TRANSITIONS=233} [2024-06-27 18:29:46,034 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-27 18:29:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 233 transitions, 2698 flow [2024-06-27 18:29:46,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:46,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:46,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:46,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:29:46,034 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:46,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1687122517, now seen corresponding path program 8 times [2024-06-27 18:29:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276108707] [2024-06-27 18:29:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:47,089 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 18:29:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:47,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276108707] [2024-06-27 18:29:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276108707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:47,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677403974] [2024-06-27 18:29:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:47,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:47,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:47,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 233 transitions, 2698 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:47,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:47,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:47,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:48,479 INFO L124 PetriNetUnfolderBase]: 4733/7495 cut-off events. [2024-06-27 18:29:48,479 INFO L125 PetriNetUnfolderBase]: For 182105/182120 co-relation queries the response was YES. [2024-06-27 18:29:48,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42991 conditions, 7495 events. 4733/7495 cut-off events. For 182105/182120 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 46802 event pairs, 1298 based on Foata normal form. 14/7361 useless extension candidates. Maximal degree in co-relation 42922. Up to 6463 conditions per place. [2024-06-27 18:29:48,541 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 229 selfloop transitions, 48 changer transitions 0/288 dead transitions. [2024-06-27 18:29:48,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 288 transitions, 3519 flow [2024-06-27 18:29:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:29:48,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 18:29:48,542 INFO L175 Difference]: Start difference. First operand has 175 places, 233 transitions, 2698 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:29:48,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 288 transitions, 3519 flow [2024-06-27 18:29:48,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 288 transitions, 3324 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:48,780 INFO L231 Difference]: Finished difference. Result has 179 places, 239 transitions, 2728 flow [2024-06-27 18:29:48,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2728, PETRI_PLACES=179, PETRI_TRANSITIONS=239} [2024-06-27 18:29:48,781 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 18:29:48,781 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 239 transitions, 2728 flow [2024-06-27 18:29:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:48,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:48,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:29:48,781 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 18:29:48,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1686912988, now seen corresponding path program 5 times [2024-06-27 18:29:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:48,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935652815] [2024-06-27 18:29:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:49,640 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 18:29:49,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:49,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935652815] [2024-06-27 18:29:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935652815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:49,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:49,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:49,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427056899] [2024-06-27 18:29:49,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:49,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:49,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:49,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:49,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 239 transitions, 2728 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:49,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:49,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:49,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:50,954 INFO L124 PetriNetUnfolderBase]: 4710/7246 cut-off events. [2024-06-27 18:29:50,954 INFO L125 PetriNetUnfolderBase]: For 185205/185220 co-relation queries the response was YES. [2024-06-27 18:29:50,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42689 conditions, 7246 events. 4710/7246 cut-off events. For 185205/185220 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43311 event pairs, 1198 based on Foata normal form. 16/7193 useless extension candidates. Maximal degree in co-relation 42618. Up to 6484 conditions per place. [2024-06-27 18:29:51,021 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 224 selfloop transitions, 55 changer transitions 0/290 dead transitions. [2024-06-27 18:29:51,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 290 transitions, 3442 flow [2024-06-27 18:29:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:29:51,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:29:51,022 INFO L175 Difference]: Start difference. First operand has 179 places, 239 transitions, 2728 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:29:51,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 290 transitions, 3442 flow [2024-06-27 18:29:51,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 290 transitions, 3252 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:51,290 INFO L231 Difference]: Finished difference. Result has 182 places, 239 transitions, 2655 flow [2024-06-27 18:29:51,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2655, PETRI_PLACES=182, PETRI_TRANSITIONS=239} [2024-06-27 18:29:51,290 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-27 18:29:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 239 transitions, 2655 flow [2024-06-27 18:29:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:51,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:51,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:29:51,291 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 18:29:51,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 200698843, now seen corresponding path program 9 times [2024-06-27 18:29:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:51,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317055112] [2024-06-27 18:29:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:52,281 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 18:29:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317055112] [2024-06-27 18:29:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317055112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250066595] [2024-06-27 18:29:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:52,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:52,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 239 transitions, 2655 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:52,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:52,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:52,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:53,683 INFO L124 PetriNetUnfolderBase]: 4723/7216 cut-off events. [2024-06-27 18:29:53,683 INFO L125 PetriNetUnfolderBase]: For 189560/189560 co-relation queries the response was YES. [2024-06-27 18:29:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 7216 events. 4723/7216 cut-off events. For 189560/189560 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 42661 event pairs, 1136 based on Foata normal form. 2/7160 useless extension candidates. Maximal degree in co-relation 42662. Up to 6279 conditions per place. [2024-06-27 18:29:53,751 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 180 selfloop transitions, 103 changer transitions 0/294 dead transitions. [2024-06-27 18:29:53,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 294 transitions, 3595 flow [2024-06-27 18:29:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:29:53,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-27 18:29:53,753 INFO L175 Difference]: Start difference. First operand has 182 places, 239 transitions, 2655 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:29:53,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 294 transitions, 3595 flow [2024-06-27 18:29:54,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 294 transitions, 3459 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:54,114 INFO L231 Difference]: Finished difference. Result has 183 places, 242 transitions, 2823 flow [2024-06-27 18:29:54,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2823, PETRI_PLACES=183, PETRI_TRANSITIONS=242} [2024-06-27 18:29:54,115 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-06-27 18:29:54,115 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 242 transitions, 2823 flow [2024-06-27 18:29:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:54,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:54,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:29:54,116 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 18:29:54,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash 200691403, now seen corresponding path program 10 times [2024-06-27 18:29:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638661868] [2024-06-27 18:29:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:55,136 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 18:29:55,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638661868] [2024-06-27 18:29:55,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638661868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:55,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:55,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:55,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649358482] [2024-06-27 18:29:55,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:55,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:55,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:55,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:55,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:55,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 242 transitions, 2823 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:55,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:55,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:56,403 INFO L124 PetriNetUnfolderBase]: 4748/7520 cut-off events. [2024-06-27 18:29:56,403 INFO L125 PetriNetUnfolderBase]: For 198212/198227 co-relation queries the response was YES. [2024-06-27 18:29:56,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43527 conditions, 7520 events. 4748/7520 cut-off events. For 198212/198227 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47044 event pairs, 1297 based on Foata normal form. 14/7385 useless extension candidates. Maximal degree in co-relation 43454. Up to 6483 conditions per place. [2024-06-27 18:29:56,469 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 236 selfloop transitions, 47 changer transitions 0/294 dead transitions. [2024-06-27 18:29:56,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 294 transitions, 3637 flow [2024-06-27 18:29:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:29:56,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:29:56,471 INFO L175 Difference]: Start difference. First operand has 183 places, 242 transitions, 2823 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:29:56,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 294 transitions, 3637 flow [2024-06-27 18:29:56,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 294 transitions, 3079 flow, removed 126 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:56,840 INFO L231 Difference]: Finished difference. Result has 184 places, 245 transitions, 2469 flow [2024-06-27 18:29:56,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2469, PETRI_PLACES=184, PETRI_TRANSITIONS=245} [2024-06-27 18:29:56,841 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 18:29:56,841 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 245 transitions, 2469 flow [2024-06-27 18:29:56,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:29:56,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:56,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:56,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:29:56,841 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:56,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1933573543, now seen corresponding path program 2 times [2024-06-27 18:29:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:56,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906328150] [2024-06-27 18:29:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:57,347 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 18:29:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906328150] [2024-06-27 18:29:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906328150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:57,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:57,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799872442] [2024-06-27 18:29:57,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:57,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:57,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:57,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 245 transitions, 2469 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:57,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:57,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:57,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:58,509 INFO L124 PetriNetUnfolderBase]: 4765/7586 cut-off events. [2024-06-27 18:29:58,509 INFO L125 PetriNetUnfolderBase]: For 200488/200488 co-relation queries the response was YES. [2024-06-27 18:29:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42743 conditions, 7586 events. 4765/7586 cut-off events. For 200488/200488 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 47993 event pairs, 1402 based on Foata normal form. 2/7434 useless extension candidates. Maximal degree in co-relation 42671. Up to 6664 conditions per place. [2024-06-27 18:29:58,584 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 228 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-06-27 18:29:58,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 267 transitions, 3065 flow [2024-06-27 18:29:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:29:58,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:29:58,585 INFO L175 Difference]: Start difference. First operand has 184 places, 245 transitions, 2469 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:29:58,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 267 transitions, 3065 flow [2024-06-27 18:29:58,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 267 transitions, 2971 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:58,783 INFO L231 Difference]: Finished difference. Result has 186 places, 245 transitions, 2437 flow [2024-06-27 18:29:58,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2437, PETRI_PLACES=186, PETRI_TRANSITIONS=245} [2024-06-27 18:29:58,783 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-27 18:29:58,783 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 245 transitions, 2437 flow [2024-06-27 18:29:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:58,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:58,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:29:58,784 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 18:29:58,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1926943046, now seen corresponding path program 1 times [2024-06-27 18:29:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:58,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303102522] [2024-06-27 18:29:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:59,317 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 18:29:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303102522] [2024-06-27 18:29:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303102522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669046950] [2024-06-27 18:29:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:59,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:29:59,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 245 transitions, 2437 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 18:29:59,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:59,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:29:59,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:00,367 INFO L124 PetriNetUnfolderBase]: 4279/7122 cut-off events. [2024-06-27 18:30:00,367 INFO L125 PetriNetUnfolderBase]: For 178717/178717 co-relation queries the response was YES. [2024-06-27 18:30:00,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38753 conditions, 7122 events. 4279/7122 cut-off events. For 178717/178717 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46862 event pairs, 1160 based on Foata normal form. 1/6930 useless extension candidates. Maximal degree in co-relation 38680. Up to 6054 conditions per place. [2024-06-27 18:30:00,431 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 248 selfloop transitions, 18 changer transitions 0/278 dead transitions. [2024-06-27 18:30:00,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 278 transitions, 3191 flow [2024-06-27 18:30:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:30:00,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:30:00,433 INFO L175 Difference]: Start difference. First operand has 186 places, 245 transitions, 2437 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:30:00,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 278 transitions, 3191 flow [2024-06-27 18:30:00,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 278 transitions, 3108 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:00,558 INFO L231 Difference]: Finished difference. Result has 188 places, 255 transitions, 2500 flow [2024-06-27 18:30:00,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2500, PETRI_PLACES=188, PETRI_TRANSITIONS=255} [2024-06-27 18:30:00,558 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:30:00,558 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 255 transitions, 2500 flow [2024-06-27 18:30:00,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 18:30:00,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:00,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:00,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:30:00,559 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 18:30:00,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1273718360, now seen corresponding path program 2 times [2024-06-27 18:30:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956673471] [2024-06-27 18:30:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:01,077 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 18:30:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956673471] [2024-06-27 18:30:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956673471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:30:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255332865] [2024-06-27 18:30:01,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:30:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:30:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:30:01,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:30:01,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 255 transitions, 2500 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 18:30:01,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:01,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:30:01,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:02,103 INFO L124 PetriNetUnfolderBase]: 4261/6988 cut-off events. [2024-06-27 18:30:02,103 INFO L125 PetriNetUnfolderBase]: For 187600/187600 co-relation queries the response was YES. [2024-06-27 18:30:02,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39562 conditions, 6988 events. 4261/6988 cut-off events. For 187600/187600 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45276 event pairs, 1212 based on Foata normal form. 1/6835 useless extension candidates. Maximal degree in co-relation 39487. Up to 6053 conditions per place. [2024-06-27 18:30:02,171 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 247 selfloop transitions, 13 changer transitions 0/272 dead transitions. [2024-06-27 18:30:02,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 272 transitions, 3068 flow [2024-06-27 18:30:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:30:02,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:30:02,172 INFO L175 Difference]: Start difference. First operand has 188 places, 255 transitions, 2500 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:30:02,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 272 transitions, 3068 flow [2024-06-27 18:30:02,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 272 transitions, 2972 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:02,361 INFO L231 Difference]: Finished difference. Result has 192 places, 255 transitions, 2436 flow [2024-06-27 18:30:02,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2436, PETRI_PLACES=192, PETRI_TRANSITIONS=255} [2024-06-27 18:30:02,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 138 predicate places. [2024-06-27 18:30:02,361 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 255 transitions, 2436 flow [2024-06-27 18:30:02,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 18:30:02,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:02,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:30:02,362 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 18:30:02,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1308564933, now seen corresponding path program 1 times [2024-06-27 18:30:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377014071] [2024-06-27 18:30:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:02,965 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 18:30:02,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377014071] [2024-06-27 18:30:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377014071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:02,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:02,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666461414] [2024-06-27 18:30:02,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:02,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:03,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 255 transitions, 2436 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:03,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:03,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:04,205 INFO L124 PetriNetUnfolderBase]: 4577/7368 cut-off events. [2024-06-27 18:30:04,206 INFO L125 PetriNetUnfolderBase]: For 191708/191708 co-relation queries the response was YES. [2024-06-27 18:30:04,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40698 conditions, 7368 events. 4577/7368 cut-off events. For 191708/191708 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 46766 event pairs, 1338 based on Foata normal form. 2/7232 useless extension candidates. Maximal degree in co-relation 40621. Up to 6518 conditions per place. [2024-06-27 18:30:04,282 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 253 selfloop transitions, 20 changer transitions 0/283 dead transitions. [2024-06-27 18:30:04,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 283 transitions, 3088 flow [2024-06-27 18:30:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:30:04,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 18:30:04,283 INFO L175 Difference]: Start difference. First operand has 192 places, 255 transitions, 2436 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:30:04,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 283 transitions, 3088 flow [2024-06-27 18:30:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 283 transitions, 3055 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:30:04,440 INFO L231 Difference]: Finished difference. Result has 195 places, 258 transitions, 2487 flow [2024-06-27 18:30:04,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2487, PETRI_PLACES=195, PETRI_TRANSITIONS=258} [2024-06-27 18:30:04,440 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 18:30:04,440 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 258 transitions, 2487 flow [2024-06-27 18:30:04,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:04,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:04,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:04,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:30:04,441 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 18:30:04,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1784304510, now seen corresponding path program 1 times [2024-06-27 18:30:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:04,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179688359] [2024-06-27 18:30:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:05,608 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 18:30:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179688359] [2024-06-27 18:30:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179688359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:05,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:05,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092091606] [2024-06-27 18:30:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:05,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:05,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 258 transitions, 2487 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:05,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:05,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:05,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:07,376 INFO L124 PetriNetUnfolderBase]: 4921/7869 cut-off events. [2024-06-27 18:30:07,376 INFO L125 PetriNetUnfolderBase]: For 246849/246853 co-relation queries the response was YES. [2024-06-27 18:30:07,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46056 conditions, 7869 events. 4921/7869 cut-off events. For 246849/246853 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50346 event pairs, 1400 based on Foata normal form. 20/7725 useless extension candidates. Maximal degree in co-relation 45979. Up to 6745 conditions per place. [2024-06-27 18:30:07,448 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 280 selfloop transitions, 32 changer transitions 0/323 dead transitions. [2024-06-27 18:30:07,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 323 transitions, 3375 flow [2024-06-27 18:30:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:07,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2024-06-27 18:30:07,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018939393939394 [2024-06-27 18:30:07,450 INFO L175 Difference]: Start difference. First operand has 195 places, 258 transitions, 2487 flow. Second operand 11 states and 265 transitions. [2024-06-27 18:30:07,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 323 transitions, 3375 flow [2024-06-27 18:30:07,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 323 transitions, 3313 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:07,649 INFO L231 Difference]: Finished difference. Result has 201 places, 259 transitions, 2542 flow [2024-06-27 18:30:07,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2542, PETRI_PLACES=201, PETRI_TRANSITIONS=259} [2024-06-27 18:30:07,649 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-27 18:30:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 259 transitions, 2542 flow [2024-06-27 18:30:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:07,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:07,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:30:07,650 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 18:30:07,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1795724624, now seen corresponding path program 2 times [2024-06-27 18:30:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693576687] [2024-06-27 18:30:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:08,709 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 18:30:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:08,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693576687] [2024-06-27 18:30:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693576687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:08,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773265183] [2024-06-27 18:30:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:08,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:08,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 259 transitions, 2542 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:10,367 INFO L124 PetriNetUnfolderBase]: 5038/8042 cut-off events. [2024-06-27 18:30:10,368 INFO L125 PetriNetUnfolderBase]: For 267686/267690 co-relation queries the response was YES. [2024-06-27 18:30:10,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47956 conditions, 8042 events. 5038/8042 cut-off events. For 267686/267690 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 51650 event pairs, 1444 based on Foata normal form. 20/7902 useless extension candidates. Maximal degree in co-relation 47878. Up to 6906 conditions per place. [2024-06-27 18:30:10,439 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 283 selfloop transitions, 28 changer transitions 0/322 dead transitions. [2024-06-27 18:30:10,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 322 transitions, 3434 flow [2024-06-27 18:30:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:30:10,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:30:10,440 INFO L175 Difference]: Start difference. First operand has 201 places, 259 transitions, 2542 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:30:10,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 322 transitions, 3434 flow [2024-06-27 18:30:10,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 322 transitions, 3347 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:10,722 INFO L231 Difference]: Finished difference. Result has 202 places, 260 transitions, 2566 flow [2024-06-27 18:30:10,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2566, PETRI_PLACES=202, PETRI_TRANSITIONS=260} [2024-06-27 18:30:10,723 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:30:10,723 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 260 transitions, 2566 flow [2024-06-27 18:30:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:10,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:10,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:30:10,724 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 18:30:10,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1916859684, now seen corresponding path program 3 times [2024-06-27 18:30:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039341171] [2024-06-27 18:30:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:11,760 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 18:30:11,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:11,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039341171] [2024-06-27 18:30:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039341171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:11,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759376955] [2024-06-27 18:30:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:11,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:11,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 260 transitions, 2566 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:11,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:11,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:13,423 INFO L124 PetriNetUnfolderBase]: 5173/8287 cut-off events. [2024-06-27 18:30:13,424 INFO L125 PetriNetUnfolderBase]: For 283054/283058 co-relation queries the response was YES. [2024-06-27 18:30:13,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49636 conditions, 8287 events. 5173/8287 cut-off events. For 283054/283058 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 53742 event pairs, 1434 based on Foata normal form. 20/8142 useless extension candidates. Maximal degree in co-relation 49557. Up to 6956 conditions per place. [2024-06-27 18:30:13,498 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 240 selfloop transitions, 74 changer transitions 0/325 dead transitions. [2024-06-27 18:30:13,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 325 transitions, 3470 flow [2024-06-27 18:30:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 18:30:13,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 18:30:13,500 INFO L175 Difference]: Start difference. First operand has 202 places, 260 transitions, 2566 flow. Second operand 10 states and 252 transitions. [2024-06-27 18:30:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 325 transitions, 3470 flow [2024-06-27 18:30:13,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 325 transitions, 3389 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:13,796 INFO L231 Difference]: Finished difference. Result has 204 places, 261 transitions, 2690 flow [2024-06-27 18:30:13,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2690, PETRI_PLACES=204, PETRI_TRANSITIONS=261} [2024-06-27 18:30:13,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 18:30:13,797 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 261 transitions, 2690 flow [2024-06-27 18:30:13,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:13,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:13,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:13,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:30:13,797 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 18:30:13,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1802219744, now seen corresponding path program 4 times [2024-06-27 18:30:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839662747] [2024-06-27 18:30:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839662747] [2024-06-27 18:30:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839662747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:14,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754893088] [2024-06-27 18:30:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:14,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:14,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:14,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 261 transitions, 2690 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:14,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:14,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:14,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:16,419 INFO L124 PetriNetUnfolderBase]: 5440/8692 cut-off events. [2024-06-27 18:30:16,419 INFO L125 PetriNetUnfolderBase]: For 317394/317398 co-relation queries the response was YES. [2024-06-27 18:30:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53801 conditions, 8692 events. 5440/8692 cut-off events. For 317394/317398 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 56639 event pairs, 1432 based on Foata normal form. 16/8545 useless extension candidates. Maximal degree in co-relation 53721. Up to 6654 conditions per place. [2024-06-27 18:30:16,496 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 242 selfloop transitions, 79 changer transitions 0/332 dead transitions. [2024-06-27 18:30:16,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 332 transitions, 3840 flow [2024-06-27 18:30:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:30:16,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 18:30:16,498 INFO L175 Difference]: Start difference. First operand has 204 places, 261 transitions, 2690 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:30:16,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 332 transitions, 3840 flow [2024-06-27 18:30:16,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 332 transitions, 3665 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:16,897 INFO L231 Difference]: Finished difference. Result has 206 places, 263 transitions, 2781 flow [2024-06-27 18:30:16,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=206, PETRI_TRANSITIONS=263} [2024-06-27 18:30:16,897 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-27 18:30:16,897 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 263 transitions, 2781 flow [2024-06-27 18:30:16,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:16,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:16,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:30:16,898 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 18:30:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1801980734, now seen corresponding path program 5 times [2024-06-27 18:30:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670974961] [2024-06-27 18:30:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:17,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670974961] [2024-06-27 18:30:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670974961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:17,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285133000] [2024-06-27 18:30:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:18,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 263 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:19,677 INFO L124 PetriNetUnfolderBase]: 5419/8733 cut-off events. [2024-06-27 18:30:19,677 INFO L125 PetriNetUnfolderBase]: For 317379/317383 co-relation queries the response was YES. [2024-06-27 18:30:19,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53147 conditions, 8733 events. 5419/8733 cut-off events. For 317379/317383 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 57779 event pairs, 1554 based on Foata normal form. 20/8573 useless extension candidates. Maximal degree in co-relation 53066. Up to 7501 conditions per place. [2024-06-27 18:30:19,757 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 287 selfloop transitions, 28 changer transitions 0/326 dead transitions. [2024-06-27 18:30:19,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 326 transitions, 3687 flow [2024-06-27 18:30:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:30:19,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:30:19,759 INFO L175 Difference]: Start difference. First operand has 206 places, 263 transitions, 2781 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:30:19,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 326 transitions, 3687 flow [2024-06-27 18:30:20,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 326 transitions, 3517 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:20,305 INFO L231 Difference]: Finished difference. Result has 210 places, 264 transitions, 2728 flow [2024-06-27 18:30:20,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2728, PETRI_PLACES=210, PETRI_TRANSITIONS=264} [2024-06-27 18:30:20,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 18:30:20,306 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 264 transitions, 2728 flow [2024-06-27 18:30:20,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:20,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:20,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:20,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:30:20,306 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 18:30:20,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1006349620, now seen corresponding path program 1 times [2024-06-27 18:30:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384501961] [2024-06-27 18:30:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:20,899 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 18:30:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384501961] [2024-06-27 18:30:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384501961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826280758] [2024-06-27 18:30:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:20,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:20,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 264 transitions, 2728 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:20,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:20,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:20,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:22,660 INFO L124 PetriNetUnfolderBase]: 5772/9217 cut-off events. [2024-06-27 18:30:22,660 INFO L125 PetriNetUnfolderBase]: For 298900/298900 co-relation queries the response was YES. [2024-06-27 18:30:22,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54387 conditions, 9217 events. 5772/9217 cut-off events. For 298900/298900 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 60541 event pairs, 1724 based on Foata normal form. 2/9025 useless extension candidates. Maximal degree in co-relation 54304. Up to 8150 conditions per place. [2024-06-27 18:30:22,759 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 260 selfloop transitions, 37 changer transitions 0/306 dead transitions. [2024-06-27 18:30:22,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 306 transitions, 3636 flow [2024-06-27 18:30:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:30:22,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 18:30:22,760 INFO L175 Difference]: Start difference. First operand has 210 places, 264 transitions, 2728 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:30:22,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 306 transitions, 3636 flow [2024-06-27 18:30:23,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 306 transitions, 3573 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:23,371 INFO L231 Difference]: Finished difference. Result has 209 places, 270 transitions, 2827 flow [2024-06-27 18:30:23,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2827, PETRI_PLACES=209, PETRI_TRANSITIONS=270} [2024-06-27 18:30:23,372 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-27 18:30:23,372 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 270 transitions, 2827 flow [2024-06-27 18:30:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:23,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:23,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:23,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:30:23,373 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:23,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1926467454, now seen corresponding path program 6 times [2024-06-27 18:30:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:23,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408321307] [2024-06-27 18:30:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:24,448 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 18:30:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408321307] [2024-06-27 18:30:24,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408321307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:24,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:24,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582282802] [2024-06-27 18:30:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:24,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:24,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:24,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 270 transitions, 2827 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:24,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:24,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:24,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:26,182 INFO L124 PetriNetUnfolderBase]: 5609/9035 cut-off events. [2024-06-27 18:30:26,182 INFO L125 PetriNetUnfolderBase]: For 334873/334908 co-relation queries the response was YES. [2024-06-27 18:30:26,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55561 conditions, 9035 events. 5609/9035 cut-off events. For 334873/334908 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 60017 event pairs, 1464 based on Foata normal form. 32/8862 useless extension candidates. Maximal degree in co-relation 55477. Up to 7622 conditions per place. [2024-06-27 18:30:26,272 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 271 selfloop transitions, 48 changer transitions 0/332 dead transitions. [2024-06-27 18:30:26,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 332 transitions, 3749 flow [2024-06-27 18:30:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:30:26,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-27 18:30:26,273 INFO L175 Difference]: Start difference. First operand has 209 places, 270 transitions, 2827 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:30:26,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 332 transitions, 3749 flow [2024-06-27 18:30:26,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 332 transitions, 3695 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:30:26,684 INFO L231 Difference]: Finished difference. Result has 216 places, 271 transitions, 2930 flow [2024-06-27 18:30:26,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2930, PETRI_PLACES=216, PETRI_TRANSITIONS=271} [2024-06-27 18:30:26,684 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-27 18:30:26,684 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 271 transitions, 2930 flow [2024-06-27 18:30:26,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:26,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:26,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:30:26,685 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:26,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1926698094, now seen corresponding path program 7 times [2024-06-27 18:30:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639902142] [2024-06-27 18:30:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639902142] [2024-06-27 18:30:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639902142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168556978] [2024-06-27 18:30:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:27,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:27,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 271 transitions, 2930 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:27,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:27,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,472 INFO L124 PetriNetUnfolderBase]: 5713/8818 cut-off events. [2024-06-27 18:30:29,473 INFO L125 PetriNetUnfolderBase]: For 361741/361753 co-relation queries the response was YES. [2024-06-27 18:30:29,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57516 conditions, 8818 events. 5713/8818 cut-off events. For 361741/361753 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 55110 event pairs, 1274 based on Foata normal form. 20/8764 useless extension candidates. Maximal degree in co-relation 57430. Up to 7614 conditions per place. [2024-06-27 18:30:29,570 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 214 selfloop transitions, 107 changer transitions 0/334 dead transitions. [2024-06-27 18:30:29,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 334 transitions, 3860 flow [2024-06-27 18:30:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:30:29,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 18:30:29,572 INFO L175 Difference]: Start difference. First operand has 216 places, 271 transitions, 2930 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:30:29,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 334 transitions, 3860 flow [2024-06-27 18:30:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 334 transitions, 3733 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:30,040 INFO L231 Difference]: Finished difference. Result has 218 places, 272 transitions, 3080 flow [2024-06-27 18:30:30,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3080, PETRI_PLACES=218, PETRI_TRANSITIONS=272} [2024-06-27 18:30:30,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 18:30:30,040 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 272 transitions, 3080 flow [2024-06-27 18:30:30,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:30,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:30,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:30:30,041 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:30,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash -761189218, now seen corresponding path program 8 times [2024-06-27 18:30:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718411536] [2024-06-27 18:30:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:30,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:31,154 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 18:30:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:31,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718411536] [2024-06-27 18:30:31,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718411536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:31,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:31,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:31,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387516217] [2024-06-27 18:30:31,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:31,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:31,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 272 transitions, 3080 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:31,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:31,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:32,947 INFO L124 PetriNetUnfolderBase]: 5873/9503 cut-off events. [2024-06-27 18:30:32,947 INFO L125 PetriNetUnfolderBase]: For 381562/381589 co-relation queries the response was YES. [2024-06-27 18:30:33,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60002 conditions, 9503 events. 5873/9503 cut-off events. For 381562/381589 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 64105 event pairs, 1540 based on Foata normal form. 32/9314 useless extension candidates. Maximal degree in co-relation 59915. Up to 8026 conditions per place. [2024-06-27 18:30:33,056 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 272 selfloop transitions, 49 changer transitions 0/334 dead transitions. [2024-06-27 18:30:33,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 334 transitions, 4010 flow [2024-06-27 18:30:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:30:33,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:30:33,057 INFO L175 Difference]: Start difference. First operand has 218 places, 272 transitions, 3080 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:30:33,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 334 transitions, 4010 flow [2024-06-27 18:30:33,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 334 transitions, 3763 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:33,562 INFO L231 Difference]: Finished difference. Result has 220 places, 273 transitions, 2996 flow [2024-06-27 18:30:33,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2996, PETRI_PLACES=220, PETRI_TRANSITIONS=273} [2024-06-27 18:30:33,562 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-27 18:30:33,562 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 273 transitions, 2996 flow [2024-06-27 18:30:33,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:33,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:33,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:33,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:30:33,563 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:33,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -754694098, now seen corresponding path program 9 times [2024-06-27 18:30:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:33,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254889672] [2024-06-27 18:30:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:34,623 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 18:30:34,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:34,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254889672] [2024-06-27 18:30:34,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254889672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:34,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:34,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:34,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081452180] [2024-06-27 18:30:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:34,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:34,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:34,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:34,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 273 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:34,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:34,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:34,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:36,384 INFO L124 PetriNetUnfolderBase]: 5964/9247 cut-off events. [2024-06-27 18:30:36,384 INFO L125 PetriNetUnfolderBase]: For 392375/392387 co-relation queries the response was YES. [2024-06-27 18:30:36,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60751 conditions, 9247 events. 5964/9247 cut-off events. For 392375/392387 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 58695 event pairs, 1305 based on Foata normal form. 16/9189 useless extension candidates. Maximal degree in co-relation 60663. Up to 7468 conditions per place. [2024-06-27 18:30:36,487 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 215 selfloop transitions, 112 changer transitions 0/340 dead transitions. [2024-06-27 18:30:36,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 340 transitions, 4024 flow [2024-06-27 18:30:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:30:36,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 18:30:36,488 INFO L175 Difference]: Start difference. First operand has 220 places, 273 transitions, 2996 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:30:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 340 transitions, 4024 flow [2024-06-27 18:30:37,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 340 transitions, 3891 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:37,130 INFO L231 Difference]: Finished difference. Result has 222 places, 275 transitions, 3211 flow [2024-06-27 18:30:37,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3211, PETRI_PLACES=222, PETRI_TRANSITIONS=275} [2024-06-27 18:30:37,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 18:30:37,131 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 275 transitions, 3211 flow [2024-06-27 18:30:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:37,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:37,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:30:37,131 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1107724710, now seen corresponding path program 10 times [2024-06-27 18:30:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322415774] [2024-06-27 18:30:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:38,089 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 18:30:38,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:38,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322415774] [2024-06-27 18:30:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322415774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:38,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:38,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333745002] [2024-06-27 18:30:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:38,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:38,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:38,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 275 transitions, 3211 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:38,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:38,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:38,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:39,852 INFO L124 PetriNetUnfolderBase]: 6170/9579 cut-off events. [2024-06-27 18:30:39,853 INFO L125 PetriNetUnfolderBase]: For 431812/431824 co-relation queries the response was YES. [2024-06-27 18:30:39,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64421 conditions, 9579 events. 6170/9579 cut-off events. For 431812/431824 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 61236 event pairs, 1220 based on Foata normal form. 16/9524 useless extension candidates. Maximal degree in co-relation 64332. Up to 6152 conditions per place. [2024-06-27 18:30:39,958 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 168 selfloop transitions, 164 changer transitions 0/345 dead transitions. [2024-06-27 18:30:39,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 345 transitions, 4439 flow [2024-06-27 18:30:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:30:39,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-27 18:30:39,959 INFO L175 Difference]: Start difference. First operand has 222 places, 275 transitions, 3211 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:30:39,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 345 transitions, 4439 flow [2024-06-27 18:30:40,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 345 transitions, 4239 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:40,745 INFO L231 Difference]: Finished difference. Result has 226 places, 277 transitions, 3467 flow [2024-06-27 18:30:40,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3467, PETRI_PLACES=226, PETRI_TRANSITIONS=277} [2024-06-27 18:30:40,745 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 18:30:40,745 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 277 transitions, 3467 flow [2024-06-27 18:30:40,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:40,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:40,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:30:40,746 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:40,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1108013010, now seen corresponding path program 11 times [2024-06-27 18:30:40,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:40,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772243724] [2024-06-27 18:30:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772243724] [2024-06-27 18:30:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772243724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:41,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189170829] [2024-06-27 18:30:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:41,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:41,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 277 transitions, 3467 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:41,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:41,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:41,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:43,683 INFO L124 PetriNetUnfolderBase]: 6421/9972 cut-off events. [2024-06-27 18:30:43,683 INFO L125 PetriNetUnfolderBase]: For 484125/484137 co-relation queries the response was YES. [2024-06-27 18:30:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69966 conditions, 9972 events. 6421/9972 cut-off events. For 484125/484137 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 64489 event pairs, 1419 based on Foata normal form. 16/9917 useless extension candidates. Maximal degree in co-relation 69875. Up to 8326 conditions per place. [2024-06-27 18:30:43,795 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 185 selfloop transitions, 148 changer transitions 0/346 dead transitions. [2024-06-27 18:30:43,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 346 transitions, 4703 flow [2024-06-27 18:30:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:30:43,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-27 18:30:43,797 INFO L175 Difference]: Start difference. First operand has 226 places, 277 transitions, 3467 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:30:43,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 346 transitions, 4703 flow [2024-06-27 18:30:44,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 346 transitions, 4460 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:44,825 INFO L231 Difference]: Finished difference. Result has 230 places, 279 transitions, 3652 flow [2024-06-27 18:30:44,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3652, PETRI_PLACES=230, PETRI_TRANSITIONS=279} [2024-06-27 18:30:44,825 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-27 18:30:44,825 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 279 transitions, 3652 flow [2024-06-27 18:30:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:44,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:44,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:30:44,826 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:44,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1393351890, now seen corresponding path program 12 times [2024-06-27 18:30:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177947113] [2024-06-27 18:30:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:44,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:45,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177947113] [2024-06-27 18:30:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177947113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:45,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874865898] [2024-06-27 18:30:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:46,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:46,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 279 transitions, 3652 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:46,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:46,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:46,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:47,947 INFO L124 PetriNetUnfolderBase]: 6581/10778 cut-off events. [2024-06-27 18:30:47,947 INFO L125 PetriNetUnfolderBase]: For 506287/506314 co-relation queries the response was YES. [2024-06-27 18:30:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72784 conditions, 10778 events. 6581/10778 cut-off events. For 506287/506314 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 75430 event pairs, 1737 based on Foata normal form. 32/10544 useless extension candidates. Maximal degree in co-relation 72691. Up to 9138 conditions per place. [2024-06-27 18:30:48,066 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 278 selfloop transitions, 50 changer transitions 0/341 dead transitions. [2024-06-27 18:30:48,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 341 transitions, 4600 flow [2024-06-27 18:30:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:30:48,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:30:48,067 INFO L175 Difference]: Start difference. First operand has 230 places, 279 transitions, 3652 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:30:48,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 341 transitions, 4600 flow [2024-06-27 18:30:48,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 341 transitions, 4374 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:48,944 INFO L231 Difference]: Finished difference. Result has 234 places, 280 transitions, 3595 flow [2024-06-27 18:30:48,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3595, PETRI_PLACES=234, PETRI_TRANSITIONS=280} [2024-06-27 18:30:48,944 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-27 18:30:48,944 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 280 transitions, 3595 flow [2024-06-27 18:30:48,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:48,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:48,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:30:48,945 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:48,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1393121250, now seen corresponding path program 13 times [2024-06-27 18:30:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:48,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866186831] [2024-06-27 18:30:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:49,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866186831] [2024-06-27 18:30:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866186831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:49,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:49,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651148828] [2024-06-27 18:30:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:49,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:49,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:50,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:50,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 280 transitions, 3595 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:50,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:50,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:50,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:52,054 INFO L124 PetriNetUnfolderBase]: 6644/10339 cut-off events. [2024-06-27 18:30:52,054 INFO L125 PetriNetUnfolderBase]: For 513854/513866 co-relation queries the response was YES. [2024-06-27 18:30:52,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73146 conditions, 10339 events. 6644/10339 cut-off events. For 513854/513866 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 67502 event pairs, 1480 based on Foata normal form. 20/10288 useless extension candidates. Maximal degree in co-relation 73051. Up to 9092 conditions per place. [2024-06-27 18:30:52,171 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 109 changer transitions 0/343 dead transitions. [2024-06-27 18:30:52,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 343 transitions, 4551 flow [2024-06-27 18:30:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:30:52,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-27 18:30:52,172 INFO L175 Difference]: Start difference. First operand has 234 places, 280 transitions, 3595 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:30:52,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 343 transitions, 4551 flow [2024-06-27 18:30:53,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 343 transitions, 4414 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:53,028 INFO L231 Difference]: Finished difference. Result has 236 places, 281 transitions, 3747 flow [2024-06-27 18:30:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3747, PETRI_PLACES=236, PETRI_TRANSITIONS=281} [2024-06-27 18:30:53,029 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-27 18:30:53,029 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 281 transitions, 3747 flow [2024-06-27 18:30:53,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:53,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:53,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:53,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:30:53,029 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 18:30:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1288287682, now seen corresponding path program 14 times [2024-06-27 18:30:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185694535] [2024-06-27 18:30:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185694535] [2024-06-27 18:30:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185694535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:54,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:54,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:54,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852300570] [2024-06-27 18:30:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:54,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:54,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:54,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 281 transitions, 3747 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:54,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:54,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:54,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:56,221 INFO L124 PetriNetUnfolderBase]: 6644/10339 cut-off events. [2024-06-27 18:30:56,222 INFO L125 PetriNetUnfolderBase]: For 496867/496879 co-relation queries the response was YES. [2024-06-27 18:30:56,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72333 conditions, 10339 events. 6644/10339 cut-off events. For 496867/496879 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 67432 event pairs, 1443 based on Foata normal form. 16/10284 useless extension candidates. Maximal degree in co-relation 72237. Up to 8725 conditions per place. [2024-06-27 18:30:56,338 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 113 changer transitions 0/347 dead transitions. [2024-06-27 18:30:56,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 347 transitions, 4737 flow [2024-06-27 18:30:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:30:56,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:30:56,339 INFO L175 Difference]: Start difference. First operand has 236 places, 281 transitions, 3747 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:30:56,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 347 transitions, 4737 flow [2024-06-27 18:30:57,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 347 transitions, 4480 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:57,247 INFO L231 Difference]: Finished difference. Result has 238 places, 282 transitions, 3786 flow [2024-06-27 18:30:57,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3786, PETRI_PLACES=238, PETRI_TRANSITIONS=282} [2024-06-27 18:30:57,248 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:30:57,248 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 282 transitions, 3786 flow [2024-06-27 18:30:57,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:57,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:57,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:30:57,248 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 18:30:57,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1957656572, now seen corresponding path program 15 times [2024-06-27 18:30:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444140375] [2024-06-27 18:30:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:58,304 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 18:30:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444140375] [2024-06-27 18:30:58,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444140375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:58,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:58,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018909926] [2024-06-27 18:30:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:58,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:30:58,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 282 transitions, 3786 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:30:58,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:58,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:30:58,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:00,551 INFO L124 PetriNetUnfolderBase]: 6616/10295 cut-off events. [2024-06-27 18:31:00,551 INFO L125 PetriNetUnfolderBase]: For 480232/480244 co-relation queries the response was YES. [2024-06-27 18:31:00,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70559 conditions, 10295 events. 6616/10295 cut-off events. For 480232/480244 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 67180 event pairs, 1454 based on Foata normal form. 20/10244 useless extension candidates. Maximal degree in co-relation 70462. Up to 8830 conditions per place. [2024-06-27 18:31:00,663 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 185 selfloop transitions, 146 changer transitions 0/344 dead transitions. [2024-06-27 18:31:00,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 344 transitions, 4682 flow [2024-06-27 18:31:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:31:00,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-27 18:31:00,665 INFO L175 Difference]: Start difference. First operand has 238 places, 282 transitions, 3786 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:31:00,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 344 transitions, 4682 flow [2024-06-27 18:31:01,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 344 transitions, 4067 flow, removed 57 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:01,833 INFO L231 Difference]: Finished difference. Result has 237 places, 282 transitions, 3470 flow [2024-06-27 18:31:01,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3470, PETRI_PLACES=237, PETRI_TRANSITIONS=282} [2024-06-27 18:31:01,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-27 18:31:01,833 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 282 transitions, 3470 flow [2024-06-27 18:31:01,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:01,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:01,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:31:01,834 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:01,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1911266588, now seen corresponding path program 2 times [2024-06-27 18:31:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083743023] [2024-06-27 18:31:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:02,425 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 18:31:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083743023] [2024-06-27 18:31:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083743023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145815488] [2024-06-27 18:31:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:02,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:02,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:02,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 282 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:02,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:02,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:02,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:04,465 INFO L124 PetriNetUnfolderBase]: 6969/11415 cut-off events. [2024-06-27 18:31:04,465 INFO L125 PetriNetUnfolderBase]: For 444309/444309 co-relation queries the response was YES. [2024-06-27 18:31:04,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70003 conditions, 11415 events. 6969/11415 cut-off events. For 444309/444309 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 80361 event pairs, 2089 based on Foata normal form. 2/11154 useless extension candidates. Maximal degree in co-relation 69908. Up to 10001 conditions per place. [2024-06-27 18:31:04,579 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 265 selfloop transitions, 40 changer transitions 0/314 dead transitions. [2024-06-27 18:31:04,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 314 transitions, 4356 flow [2024-06-27 18:31:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:31:04,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:31:04,580 INFO L175 Difference]: Start difference. First operand has 237 places, 282 transitions, 3470 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:31:04,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 314 transitions, 4356 flow [2024-06-27 18:31:05,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 314 transitions, 4059 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:05,524 INFO L231 Difference]: Finished difference. Result has 235 places, 285 transitions, 3303 flow [2024-06-27 18:31:05,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3303, PETRI_PLACES=235, PETRI_TRANSITIONS=285} [2024-06-27 18:31:05,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 18:31:05,525 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 285 transitions, 3303 flow [2024-06-27 18:31:05,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:05,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:05,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:31:05,525 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:05,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1910821118, now seen corresponding path program 3 times [2024-06-27 18:31:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:05,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391266522] [2024-06-27 18:31:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391266522] [2024-06-27 18:31:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391266522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358896162] [2024-06-27 18:31:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:06,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:06,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:06,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 285 transitions, 3303 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:06,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:06,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:06,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:08,069 INFO L124 PetriNetUnfolderBase]: 6963/11415 cut-off events. [2024-06-27 18:31:08,069 INFO L125 PetriNetUnfolderBase]: For 450756/450756 co-relation queries the response was YES. [2024-06-27 18:31:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69409 conditions, 11415 events. 6963/11415 cut-off events. For 450756/450756 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 80501 event pairs, 2075 based on Foata normal form. 2/11152 useless extension candidates. Maximal degree in co-relation 69313. Up to 9996 conditions per place. [2024-06-27 18:31:08,213 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 263 selfloop transitions, 41 changer transitions 0/313 dead transitions. [2024-06-27 18:31:08,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 313 transitions, 4031 flow [2024-06-27 18:31:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:31:08,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 18:31:08,214 INFO L175 Difference]: Start difference. First operand has 235 places, 285 transitions, 3303 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:31:08,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 313 transitions, 4031 flow [2024-06-27 18:31:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 313 transitions, 3878 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:09,035 INFO L231 Difference]: Finished difference. Result has 237 places, 285 transitions, 3238 flow [2024-06-27 18:31:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3150, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3238, PETRI_PLACES=237, PETRI_TRANSITIONS=285} [2024-06-27 18:31:09,036 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-27 18:31:09,036 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 285 transitions, 3238 flow [2024-06-27 18:31:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:09,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:09,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:31:09,036 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 18:31:09,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 256820349, now seen corresponding path program 1 times [2024-06-27 18:31:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830186777] [2024-06-27 18:31:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:09,676 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 18:31:09,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:09,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830186777] [2024-06-27 18:31:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830186777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142536199] [2024-06-27 18:31:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:09,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:31:09,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 285 transitions, 3238 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:09,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:09,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:31:09,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:11,368 INFO L124 PetriNetUnfolderBase]: 6180/10443 cut-off events. [2024-06-27 18:31:11,368 INFO L125 PetriNetUnfolderBase]: For 401589/401601 co-relation queries the response was YES. [2024-06-27 18:31:11,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63088 conditions, 10443 events. 6180/10443 cut-off events. For 401589/401601 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 75780 event pairs, 1656 based on Foata normal form. 5/10161 useless extension candidates. Maximal degree in co-relation 62991. Up to 8986 conditions per place. [2024-06-27 18:31:11,498 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 288 selfloop transitions, 15 changer transitions 0/318 dead transitions. [2024-06-27 18:31:11,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 318 transitions, 3990 flow [2024-06-27 18:31:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:31:11,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:31:11,500 INFO L175 Difference]: Start difference. First operand has 237 places, 285 transitions, 3238 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:31:11,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 318 transitions, 3990 flow [2024-06-27 18:31:12,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 318 transitions, 3899 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:12,301 INFO L231 Difference]: Finished difference. Result has 238 places, 288 transitions, 3237 flow [2024-06-27 18:31:12,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3237, PETRI_PLACES=238, PETRI_TRANSITIONS=288} [2024-06-27 18:31:12,301 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:31:12,301 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 288 transitions, 3237 flow [2024-06-27 18:31:12,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:12,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:12,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:12,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:31:12,302 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 18:31:12,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash -394305953, now seen corresponding path program 2 times [2024-06-27 18:31:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807080835] [2024-06-27 18:31:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:12,920 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 18:31:12,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807080835] [2024-06-27 18:31:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807080835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:12,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231237312] [2024-06-27 18:31:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:12,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:13,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:31:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 288 transitions, 3237 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:31:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:14,551 INFO L124 PetriNetUnfolderBase]: 6202/10473 cut-off events. [2024-06-27 18:31:14,551 INFO L125 PetriNetUnfolderBase]: For 414433/414445 co-relation queries the response was YES. [2024-06-27 18:31:14,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63981 conditions, 10473 events. 6202/10473 cut-off events. For 414433/414445 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 75929 event pairs, 1662 based on Foata normal form. 5/10192 useless extension candidates. Maximal degree in co-relation 63883. Up to 8966 conditions per place. [2024-06-27 18:31:14,695 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 279 selfloop transitions, 28 changer transitions 0/322 dead transitions. [2024-06-27 18:31:14,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 322 transitions, 4167 flow [2024-06-27 18:31:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:31:14,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:31:14,697 INFO L175 Difference]: Start difference. First operand has 238 places, 288 transitions, 3237 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:31:14,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 322 transitions, 4167 flow [2024-06-27 18:31:15,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 322 transitions, 4069 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:15,258 INFO L231 Difference]: Finished difference. Result has 239 places, 294 transitions, 3315 flow [2024-06-27 18:31:15,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3315, PETRI_PLACES=239, PETRI_TRANSITIONS=294} [2024-06-27 18:31:15,260 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-27 18:31:15,260 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 294 transitions, 3315 flow [2024-06-27 18:31:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:15,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:15,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:31:15,261 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:15,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 256940505, now seen corresponding path program 1 times [2024-06-27 18:31:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080723279] [2024-06-27 18:31:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:15,880 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 18:31:15,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080723279] [2024-06-27 18:31:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080723279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465945330] [2024-06-27 18:31:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:15,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:15,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 294 transitions, 3315 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:15,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:15,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:15,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:17,612 INFO L124 PetriNetUnfolderBase]: 6504/10871 cut-off events. [2024-06-27 18:31:17,612 INFO L125 PetriNetUnfolderBase]: For 429836/429836 co-relation queries the response was YES. [2024-06-27 18:31:17,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66370 conditions, 10871 events. 6504/10871 cut-off events. For 429836/429836 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 77996 event pairs, 1792 based on Foata normal form. 1/10593 useless extension candidates. Maximal degree in co-relation 66271. Up to 9475 conditions per place. [2024-06-27 18:31:17,731 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 296 selfloop transitions, 26 changer transitions 0/332 dead transitions. [2024-06-27 18:31:17,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 332 transitions, 4267 flow [2024-06-27 18:31:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:31:17,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:31:17,732 INFO L175 Difference]: Start difference. First operand has 239 places, 294 transitions, 3315 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:31:17,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 332 transitions, 4267 flow [2024-06-27 18:31:18,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 332 transitions, 4199 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:18,479 INFO L231 Difference]: Finished difference. Result has 244 places, 304 transitions, 3428 flow [2024-06-27 18:31:18,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3428, PETRI_PLACES=244, PETRI_TRANSITIONS=304} [2024-06-27 18:31:18,479 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-27 18:31:18,479 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 304 transitions, 3428 flow [2024-06-27 18:31:18,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:18,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:18,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:18,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:31:18,480 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:18,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -830295565, now seen corresponding path program 2 times [2024-06-27 18:31:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347247409] [2024-06-27 18:31:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:19,047 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 18:31:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:19,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347247409] [2024-06-27 18:31:19,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347247409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:19,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:19,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619420322] [2024-06-27 18:31:19,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:19,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:19,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:19,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:19,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 304 transitions, 3428 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:19,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:19,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:19,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:20,820 INFO L124 PetriNetUnfolderBase]: 6521/10908 cut-off events. [2024-06-27 18:31:20,820 INFO L125 PetriNetUnfolderBase]: For 446702/446702 co-relation queries the response was YES. [2024-06-27 18:31:20,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67784 conditions, 10908 events. 6521/10908 cut-off events. For 446702/446702 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 78306 event pairs, 1931 based on Foata normal form. 1/10657 useless extension candidates. Maximal degree in co-relation 67682. Up to 9551 conditions per place. [2024-06-27 18:31:20,952 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 300 selfloop transitions, 17 changer transitions 0/327 dead transitions. [2024-06-27 18:31:20,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 327 transitions, 4158 flow [2024-06-27 18:31:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:31:20,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-27 18:31:20,953 INFO L175 Difference]: Start difference. First operand has 244 places, 304 transitions, 3428 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:31:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 327 transitions, 4158 flow [2024-06-27 18:31:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 327 transitions, 4114 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 18:31:21,935 INFO L231 Difference]: Finished difference. Result has 249 places, 307 transitions, 3470 flow [2024-06-27 18:31:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3470, PETRI_PLACES=249, PETRI_TRANSITIONS=307} [2024-06-27 18:31:21,936 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 18:31:21,936 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 307 transitions, 3470 flow [2024-06-27 18:31:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:21,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:21,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:31:21,937 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:21,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash -188575073, now seen corresponding path program 3 times [2024-06-27 18:31:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298371582] [2024-06-27 18:31:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:22,539 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 18:31:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298371582] [2024-06-27 18:31:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298371582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:22,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:22,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741478602] [2024-06-27 18:31:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:22,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:22,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:31:22,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 307 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:22,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:22,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:31:22,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:24,303 INFO L124 PetriNetUnfolderBase]: 6250/10581 cut-off events. [2024-06-27 18:31:24,303 INFO L125 PetriNetUnfolderBase]: For 454620/454644 co-relation queries the response was YES. [2024-06-27 18:31:24,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66377 conditions, 10581 events. 6250/10581 cut-off events. For 454620/454644 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 77011 event pairs, 1798 based on Foata normal form. 1/10310 useless extension candidates. Maximal degree in co-relation 66272. Up to 9075 conditions per place. [2024-06-27 18:31:24,432 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 294 selfloop transitions, 16 changer transitions 0/329 dead transitions. [2024-06-27 18:31:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 329 transitions, 4162 flow [2024-06-27 18:31:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:31:24,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 18:31:24,433 INFO L175 Difference]: Start difference. First operand has 249 places, 307 transitions, 3470 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:31:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 329 transitions, 4162 flow [2024-06-27 18:31:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 329 transitions, 4064 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:25,366 INFO L231 Difference]: Finished difference. Result has 251 places, 307 transitions, 3410 flow [2024-06-27 18:31:25,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3410, PETRI_PLACES=251, PETRI_TRANSITIONS=307} [2024-06-27 18:31:25,367 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-27 18:31:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 307 transitions, 3410 flow [2024-06-27 18:31:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:31:25,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:25,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:25,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:31:25,367 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:25,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1911081115, now seen corresponding path program 3 times [2024-06-27 18:31:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297841248] [2024-06-27 18:31:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:25,971 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 18:31:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297841248] [2024-06-27 18:31:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297841248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:25,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987905005] [2024-06-27 18:31:25,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:26,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:26,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 307 transitions, 3410 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:26,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:26,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:26,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:27,720 INFO L124 PetriNetUnfolderBase]: 6515/10896 cut-off events. [2024-06-27 18:31:27,721 INFO L125 PetriNetUnfolderBase]: For 463073/463073 co-relation queries the response was YES. [2024-06-27 18:31:27,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67806 conditions, 10896 events. 6515/10896 cut-off events. For 463073/463073 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 78223 event pairs, 1927 based on Foata normal form. 1/10646 useless extension candidates. Maximal degree in co-relation 67701. Up to 9523 conditions per place. [2024-06-27 18:31:27,863 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 297 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2024-06-27 18:31:27,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 329 transitions, 4120 flow [2024-06-27 18:31:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:31:27,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:31:27,865 INFO L175 Difference]: Start difference. First operand has 251 places, 307 transitions, 3410 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:31:27,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 329 transitions, 4120 flow [2024-06-27 18:31:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 329 transitions, 4052 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:28,760 INFO L231 Difference]: Finished difference. Result has 252 places, 307 transitions, 3392 flow [2024-06-27 18:31:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3392, PETRI_PLACES=252, PETRI_TRANSITIONS=307} [2024-06-27 18:31:28,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-27 18:31:28,761 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 307 transitions, 3392 flow [2024-06-27 18:31:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:28,761 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 18:31:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:31:28,761 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:28,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1363458100, now seen corresponding path program 1 times [2024-06-27 18:31:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206502393] [2024-06-27 18:31:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:30,019 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 18:31:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206502393] [2024-06-27 18:31:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206502393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:30,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:30,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991347478] [2024-06-27 18:31:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:30,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:30,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 307 transitions, 3392 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:30,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:30,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:30,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:32,245 INFO L124 PetriNetUnfolderBase]: 6927/11577 cut-off events. [2024-06-27 18:31:32,245 INFO L125 PetriNetUnfolderBase]: For 574876/574900 co-relation queries the response was YES. [2024-06-27 18:31:32,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73996 conditions, 11577 events. 6927/11577 cut-off events. For 574876/574900 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 82921 event pairs, 1467 based on Foata normal form. 12/11276 useless extension candidates. Maximal degree in co-relation 73890. Up to 9748 conditions per place. [2024-06-27 18:31:32,406 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 328 selfloop transitions, 36 changer transitions 0/382 dead transitions. [2024-06-27 18:31:32,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 382 transitions, 4550 flow [2024-06-27 18:31:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:31:32,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:31:32,407 INFO L175 Difference]: Start difference. First operand has 252 places, 307 transitions, 3392 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:31:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 382 transitions, 4550 flow [2024-06-27 18:31:33,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 382 transitions, 4478 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:33,555 INFO L231 Difference]: Finished difference. Result has 259 places, 315 transitions, 3651 flow [2024-06-27 18:31:33,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3651, PETRI_PLACES=259, PETRI_TRANSITIONS=315} [2024-06-27 18:31:33,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-27 18:31:33,556 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 315 transitions, 3651 flow [2024-06-27 18:31:33,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:33,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:33,556 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 18:31:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:31:33,557 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:33,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2040387874, now seen corresponding path program 2 times [2024-06-27 18:31:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526840315] [2024-06-27 18:31:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:34,676 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 18:31:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526840315] [2024-06-27 18:31:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526840315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973200857] [2024-06-27 18:31:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:34,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:34,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 315 transitions, 3651 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:34,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:34,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:34,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:37,008 INFO L124 PetriNetUnfolderBase]: 7029/11617 cut-off events. [2024-06-27 18:31:37,008 INFO L125 PetriNetUnfolderBase]: For 608103/608127 co-relation queries the response was YES. [2024-06-27 18:31:37,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76623 conditions, 11617 events. 7029/11617 cut-off events. For 608103/608127 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 83018 event pairs, 1938 based on Foata normal form. 12/11355 useless extension candidates. Maximal degree in co-relation 76513. Up to 9981 conditions per place. [2024-06-27 18:31:37,175 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 333 selfloop transitions, 33 changer transitions 0/384 dead transitions. [2024-06-27 18:31:37,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 384 transitions, 4751 flow [2024-06-27 18:31:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 18:31:37,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:31:37,176 INFO L175 Difference]: Start difference. First operand has 259 places, 315 transitions, 3651 flow. Second operand 11 states and 264 transitions. [2024-06-27 18:31:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 384 transitions, 4751 flow [2024-06-27 18:31:38,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 384 transitions, 4539 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:38,459 INFO L231 Difference]: Finished difference. Result has 267 places, 320 transitions, 3682 flow [2024-06-27 18:31:38,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3682, PETRI_PLACES=267, PETRI_TRANSITIONS=320} [2024-06-27 18:31:38,460 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-27 18:31:38,460 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 320 transitions, 3682 flow [2024-06-27 18:31:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:38,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:38,460 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 18:31:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:31:38,460 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:38,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash -157371276, now seen corresponding path program 3 times [2024-06-27 18:31:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958124951] [2024-06-27 18:31:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958124951] [2024-06-27 18:31:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958124951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:39,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:39,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299016517] [2024-06-27 18:31:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:39,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:39,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 320 transitions, 3682 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:39,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:39,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:39,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:41,964 INFO L124 PetriNetUnfolderBase]: 7122/11772 cut-off events. [2024-06-27 18:31:41,964 INFO L125 PetriNetUnfolderBase]: For 632654/632678 co-relation queries the response was YES. [2024-06-27 18:31:42,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77788 conditions, 11772 events. 7122/11772 cut-off events. For 632654/632678 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 84272 event pairs, 1958 based on Foata normal form. 12/11509 useless extension candidates. Maximal degree in co-relation 77675. Up to 10069 conditions per place. [2024-06-27 18:31:42,145 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 344 selfloop transitions, 26 changer transitions 0/388 dead transitions. [2024-06-27 18:31:42,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 388 transitions, 4724 flow [2024-06-27 18:31:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:31:42,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:31:42,146 INFO L175 Difference]: Start difference. First operand has 267 places, 320 transitions, 3682 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:31:42,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 388 transitions, 4724 flow [2024-06-27 18:31:43,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 388 transitions, 4557 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:43,881 INFO L231 Difference]: Finished difference. Result has 271 places, 323 transitions, 3663 flow [2024-06-27 18:31:43,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3663, PETRI_PLACES=271, PETRI_TRANSITIONS=323} [2024-06-27 18:31:43,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 217 predicate places. [2024-06-27 18:31:43,882 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 323 transitions, 3663 flow [2024-06-27 18:31:43,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:43,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:43,882 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 18:31:43,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:31:43,882 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:43,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash -913557608, now seen corresponding path program 4 times [2024-06-27 18:31:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325547974] [2024-06-27 18:31:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:45,182 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 18:31:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325547974] [2024-06-27 18:31:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325547974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015177135] [2024-06-27 18:31:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:45,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:45,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 323 transitions, 3663 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:45,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:45,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:45,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:47,635 INFO L124 PetriNetUnfolderBase]: 7252/12014 cut-off events. [2024-06-27 18:31:47,635 INFO L125 PetriNetUnfolderBase]: For 650791/650815 co-relation queries the response was YES. [2024-06-27 18:31:47,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79356 conditions, 12014 events. 7252/12014 cut-off events. For 650791/650815 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 86422 event pairs, 2016 based on Foata normal form. 12/11742 useless extension candidates. Maximal degree in co-relation 79240. Up to 10265 conditions per place. [2024-06-27 18:31:47,791 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 336 selfloop transitions, 35 changer transitions 0/389 dead transitions. [2024-06-27 18:31:47,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 389 transitions, 4705 flow [2024-06-27 18:31:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:31:47,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:31:47,792 INFO L175 Difference]: Start difference. First operand has 271 places, 323 transitions, 3663 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:31:47,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 389 transitions, 4705 flow [2024-06-27 18:31:49,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 389 transitions, 4593 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:49,463 INFO L231 Difference]: Finished difference. Result has 275 places, 326 transitions, 3708 flow [2024-06-27 18:31:49,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3708, PETRI_PLACES=275, PETRI_TRANSITIONS=326} [2024-06-27 18:31:49,464 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 18:31:49,464 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 326 transitions, 3708 flow [2024-06-27 18:31:49,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:49,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:49,464 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 18:31:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:31:49,464 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:49,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash -913701758, now seen corresponding path program 5 times [2024-06-27 18:31:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223492529] [2024-06-27 18:31:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:50,754 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 18:31:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:50,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223492529] [2024-06-27 18:31:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223492529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:50,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818218167] [2024-06-27 18:31:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:50,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:50,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 326 transitions, 3708 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:50,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:50,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:50,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:53,329 INFO L124 PetriNetUnfolderBase]: 7382/12224 cut-off events. [2024-06-27 18:31:53,329 INFO L125 PetriNetUnfolderBase]: For 670531/670555 co-relation queries the response was YES. [2024-06-27 18:31:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80597 conditions, 12224 events. 7382/12224 cut-off events. For 670531/670555 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 88057 event pairs, 2022 based on Foata normal form. 12/11950 useless extension candidates. Maximal degree in co-relation 80479. Up to 10356 conditions per place. [2024-06-27 18:31:53,483 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 337 selfloop transitions, 39 changer transitions 0/394 dead transitions. [2024-06-27 18:31:53,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 394 transitions, 4780 flow [2024-06-27 18:31:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:31:53,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:31:53,484 INFO L175 Difference]: Start difference. First operand has 275 places, 326 transitions, 3708 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:31:53,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 394 transitions, 4780 flow [2024-06-27 18:31:54,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 394 transitions, 4661 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:54,873 INFO L231 Difference]: Finished difference. Result has 279 places, 330 transitions, 3775 flow [2024-06-27 18:31:54,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3775, PETRI_PLACES=279, PETRI_TRANSITIONS=330} [2024-06-27 18:31:54,873 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 225 predicate places. [2024-06-27 18:31:54,873 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 330 transitions, 3775 flow [2024-06-27 18:31:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:54,873 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 18:31:54,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:31:54,873 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:54,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -714255818, now seen corresponding path program 6 times [2024-06-27 18:31:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735136645] [2024-06-27 18:31:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:55,973 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 18:31:55,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:55,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735136645] [2024-06-27 18:31:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735136645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:55,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696235150] [2024-06-27 18:31:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:55,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:31:56,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 330 transitions, 3775 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:31:56,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:56,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:31:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:58,600 INFO L124 PetriNetUnfolderBase]: 7475/12417 cut-off events. [2024-06-27 18:31:58,600 INFO L125 PetriNetUnfolderBase]: For 691301/691325 co-relation queries the response was YES. [2024-06-27 18:31:58,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82104 conditions, 12417 events. 7475/12417 cut-off events. For 691301/691325 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 90048 event pairs, 2106 based on Foata normal form. 12/12131 useless extension candidates. Maximal degree in co-relation 81984. Up to 10665 conditions per place. [2024-06-27 18:31:58,766 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 349 selfloop transitions, 27 changer transitions 0/394 dead transitions. [2024-06-27 18:31:58,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 394 transitions, 4822 flow [2024-06-27 18:31:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:31:58,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2024-06-27 18:31:58,767 INFO L175 Difference]: Start difference. First operand has 279 places, 330 transitions, 3775 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:31:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 394 transitions, 4822 flow [2024-06-27 18:32:00,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 394 transitions, 4676 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:00,552 INFO L231 Difference]: Finished difference. Result has 283 places, 332 transitions, 3773 flow [2024-06-27 18:32:00,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3631, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3773, PETRI_PLACES=283, PETRI_TRANSITIONS=332} [2024-06-27 18:32:00,552 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-06-27 18:32:00,552 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 332 transitions, 3773 flow [2024-06-27 18:32:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:00,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:00,552 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 18:32:00,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:32:00,553 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:00,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1125423753, now seen corresponding path program 1 times [2024-06-27 18:32:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098513020] [2024-06-27 18:32:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:01,170 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 18:32:01,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:01,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098513020] [2024-06-27 18:32:01,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098513020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:01,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714911764] [2024-06-27 18:32:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:01,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:01,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:01,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:01,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 332 transitions, 3773 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:01,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:01,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:01,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:03,384 INFO L124 PetriNetUnfolderBase]: 7549/12568 cut-off events. [2024-06-27 18:32:03,384 INFO L125 PetriNetUnfolderBase]: For 679659/679683 co-relation queries the response was YES. [2024-06-27 18:32:03,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82101 conditions, 12568 events. 7549/12568 cut-off events. For 679659/679683 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 91528 event pairs, 2153 based on Foata normal form. 2/12260 useless extension candidates. Maximal degree in co-relation 81979. Up to 10903 conditions per place. [2024-06-27 18:32:03,545 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 331 selfloop transitions, 29 changer transitions 0/378 dead transitions. [2024-06-27 18:32:03,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 378 transitions, 4897 flow [2024-06-27 18:32:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:32:03,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:32:03,546 INFO L175 Difference]: Start difference. First operand has 283 places, 332 transitions, 3773 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:32:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 378 transitions, 4897 flow [2024-06-27 18:32:04,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 378 transitions, 4786 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:04,384 INFO L231 Difference]: Finished difference. Result has 284 places, 344 transitions, 3900 flow [2024-06-27 18:32:04,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3900, PETRI_PLACES=284, PETRI_TRANSITIONS=344} [2024-06-27 18:32:04,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 18:32:04,385 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 344 transitions, 3900 flow [2024-06-27 18:32:04,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:04,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:04,385 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 18:32:04,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:32:04,385 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:04,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash -569042651, now seen corresponding path program 2 times [2024-06-27 18:32:04,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:04,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325427108] [2024-06-27 18:32:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:04,946 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 18:32:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325427108] [2024-06-27 18:32:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325427108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:04,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:04,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93231649] [2024-06-27 18:32:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:04,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:04,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 344 transitions, 3900 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:04,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:04,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:04,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:07,216 INFO L124 PetriNetUnfolderBase]: 7583/12634 cut-off events. [2024-06-27 18:32:07,216 INFO L125 PetriNetUnfolderBase]: For 687531/687555 co-relation queries the response was YES. [2024-06-27 18:32:07,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83410 conditions, 12634 events. 7583/12634 cut-off events. For 687531/687555 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92270 event pairs, 2167 based on Foata normal form. 2/12322 useless extension candidates. Maximal degree in co-relation 83286. Up to 11016 conditions per place. [2024-06-27 18:32:07,384 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 334 selfloop transitions, 24 changer transitions 0/376 dead transitions. [2024-06-27 18:32:07,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 376 transitions, 4788 flow [2024-06-27 18:32:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:32:07,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:32:07,385 INFO L175 Difference]: Start difference. First operand has 284 places, 344 transitions, 3900 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:32:07,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 376 transitions, 4788 flow [2024-06-27 18:32:08,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 376 transitions, 4670 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-27 18:32:08,773 INFO L231 Difference]: Finished difference. Result has 289 places, 349 transitions, 3926 flow [2024-06-27 18:32:08,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3926, PETRI_PLACES=289, PETRI_TRANSITIONS=349} [2024-06-27 18:32:08,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-27 18:32:08,774 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 349 transitions, 3926 flow [2024-06-27 18:32:08,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:08,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:08,774 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 18:32:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:32:08,775 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:08,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -569033754, now seen corresponding path program 1 times [2024-06-27 18:32:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109162529] [2024-06-27 18:32:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:09,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109162529] [2024-06-27 18:32:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109162529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:09,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:09,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:32:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588586404] [2024-06-27 18:32:09,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:09,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:32:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:32:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:32:09,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:09,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 349 transitions, 3926 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:32:09,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:09,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:09,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:12,074 INFO L124 PetriNetUnfolderBase]: 7878/13009 cut-off events. [2024-06-27 18:32:12,074 INFO L125 PetriNetUnfolderBase]: For 702975/702975 co-relation queries the response was YES. [2024-06-27 18:32:12,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85186 conditions, 13009 events. 7878/13009 cut-off events. For 702975/702975 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 93999 event pairs, 2252 based on Foata normal form. 2/12697 useless extension candidates. Maximal degree in co-relation 85060. Up to 11293 conditions per place. [2024-06-27 18:32:12,242 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 340 selfloop transitions, 51 changer transitions 0/400 dead transitions. [2024-06-27 18:32:12,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 400 transitions, 5154 flow [2024-06-27 18:32:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:32:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:32:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:32:12,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:32:12,244 INFO L175 Difference]: Start difference. First operand has 289 places, 349 transitions, 3926 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:32:12,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 400 transitions, 5154 flow [2024-06-27 18:32:13,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 400 transitions, 5084 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:13,737 INFO L231 Difference]: Finished difference. Result has 294 places, 358 transitions, 4084 flow [2024-06-27 18:32:13,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4084, PETRI_PLACES=294, PETRI_TRANSITIONS=358} [2024-06-27 18:32:13,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-27 18:32:13,738 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 358 transitions, 4084 flow [2024-06-27 18:32:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:32:13,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:13,738 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 18:32:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:32:13,738 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash -244449668, now seen corresponding path program 7 times [2024-06-27 18:32:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395202985] [2024-06-27 18:32:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:14,884 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 18:32:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395202985] [2024-06-27 18:32:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395202985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:14,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:14,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794832953] [2024-06-27 18:32:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:14,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:15,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:15,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 358 transitions, 4084 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:15,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:15,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:15,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:17,543 INFO L124 PetriNetUnfolderBase]: 7760/12910 cut-off events. [2024-06-27 18:32:17,543 INFO L125 PetriNetUnfolderBase]: For 762974/763009 co-relation queries the response was YES. [2024-06-27 18:32:17,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87104 conditions, 12910 events. 7760/12910 cut-off events. For 762974/763009 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93925 event pairs, 1918 based on Foata normal form. 24/12558 useless extension candidates. Maximal degree in co-relation 86976. Up to 10923 conditions per place. [2024-06-27 18:32:17,751 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 355 selfloop transitions, 49 changer transitions 0/422 dead transitions. [2024-06-27 18:32:17,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 422 transitions, 5208 flow [2024-06-27 18:32:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:32:17,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:32:17,752 INFO L175 Difference]: Start difference. First operand has 294 places, 358 transitions, 4084 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:32:17,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 422 transitions, 5208 flow [2024-06-27 18:32:19,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 422 transitions, 5155 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:19,302 INFO L231 Difference]: Finished difference. Result has 302 places, 361 transitions, 4222 flow [2024-06-27 18:32:19,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4222, PETRI_PLACES=302, PETRI_TRANSITIONS=361} [2024-06-27 18:32:19,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-27 18:32:19,302 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 361 transitions, 4222 flow [2024-06-27 18:32:19,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:19,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:19,303 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 18:32:19,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:32:19,303 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:19,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2020035392, now seen corresponding path program 8 times [2024-06-27 18:32:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:19,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713383236] [2024-06-27 18:32:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:20,466 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 18:32:20,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:20,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713383236] [2024-06-27 18:32:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713383236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:20,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759089820] [2024-06-27 18:32:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:20,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:20,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:20,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 361 transitions, 4222 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:20,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:20,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:20,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:23,152 INFO L124 PetriNetUnfolderBase]: 7890/13144 cut-off events. [2024-06-27 18:32:23,153 INFO L125 PetriNetUnfolderBase]: For 803699/803734 co-relation queries the response was YES. [2024-06-27 18:32:23,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89660 conditions, 13144 events. 7890/13144 cut-off events. For 803699/803734 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 95984 event pairs, 1956 based on Foata normal form. 24/12782 useless extension candidates. Maximal degree in co-relation 89528. Up to 11125 conditions per place. [2024-06-27 18:32:23,380 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 360 selfloop transitions, 47 changer transitions 0/425 dead transitions. [2024-06-27 18:32:23,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 425 transitions, 5358 flow [2024-06-27 18:32:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:32:23,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:32:23,381 INFO L175 Difference]: Start difference. First operand has 302 places, 361 transitions, 4222 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:32:23,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 425 transitions, 5358 flow [2024-06-27 18:32:25,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 425 transitions, 5205 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:25,544 INFO L231 Difference]: Finished difference. Result has 306 places, 364 transitions, 4262 flow [2024-06-27 18:32:25,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4069, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4262, PETRI_PLACES=306, PETRI_TRANSITIONS=364} [2024-06-27 18:32:25,545 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2024-06-27 18:32:25,545 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 364 transitions, 4262 flow [2024-06-27 18:32:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:25,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:25,545 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 18:32:25,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:32:25,545 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:25,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2122243316, now seen corresponding path program 9 times [2024-06-27 18:32:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:25,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737207988] [2024-06-27 18:32:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:25,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:26,978 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 18:32:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737207988] [2024-06-27 18:32:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737207988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758415389] [2024-06-27 18:32:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:27,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:27,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 364 transitions, 4262 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:27,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:27,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:27,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:30,458 INFO L124 PetriNetUnfolderBase]: 8001/13224 cut-off events. [2024-06-27 18:32:30,458 INFO L125 PetriNetUnfolderBase]: For 823961/823981 co-relation queries the response was YES. [2024-06-27 18:32:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90710 conditions, 13224 events. 8001/13224 cut-off events. For 823961/823981 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 95931 event pairs, 1942 based on Foata normal form. 12/12871 useless extension candidates. Maximal degree in co-relation 90576. Up to 11249 conditions per place. [2024-06-27 18:32:30,645 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 355 selfloop transitions, 56 changer transitions 0/429 dead transitions. [2024-06-27 18:32:30,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 429 transitions, 5422 flow [2024-06-27 18:32:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:32:30,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:32:30,646 INFO L175 Difference]: Start difference. First operand has 306 places, 364 transitions, 4262 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:32:30,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 429 transitions, 5422 flow [2024-06-27 18:32:32,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 429 transitions, 5267 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:32,384 INFO L231 Difference]: Finished difference. Result has 310 places, 367 transitions, 4324 flow [2024-06-27 18:32:32,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4324, PETRI_PLACES=310, PETRI_TRANSITIONS=367} [2024-06-27 18:32:32,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-27 18:32:32,384 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 367 transitions, 4324 flow [2024-06-27 18:32:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:32,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:32,384 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 18:32:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:32:32,385 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:32,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2127749846, now seen corresponding path program 10 times [2024-06-27 18:32:32,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:32,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834242573] [2024-06-27 18:32:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:32,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:33,795 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 18:32:33,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:33,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834242573] [2024-06-27 18:32:33,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834242573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:33,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:33,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495340455] [2024-06-27 18:32:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:33,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:33,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:33,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 367 transitions, 4324 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:33,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:33,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:33,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:37,122 INFO L124 PetriNetUnfolderBase]: 8020/13364 cut-off events. [2024-06-27 18:32:37,122 INFO L125 PetriNetUnfolderBase]: For 806415/806450 co-relation queries the response was YES. [2024-06-27 18:32:37,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89736 conditions, 13364 events. 8020/13364 cut-off events. For 806415/806450 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 97810 event pairs, 1954 based on Foata normal form. 24/12996 useless extension candidates. Maximal degree in co-relation 89600. Up to 11182 conditions per place. [2024-06-27 18:32:37,312 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 358 selfloop transitions, 55 changer transitions 0/431 dead transitions. [2024-06-27 18:32:37,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 431 transitions, 5378 flow [2024-06-27 18:32:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:32:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:32:37,313 INFO L175 Difference]: Start difference. First operand has 310 places, 367 transitions, 4324 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:32:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 431 transitions, 5378 flow [2024-06-27 18:32:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 431 transitions, 5199 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:38,965 INFO L231 Difference]: Finished difference. Result has 313 places, 369 transitions, 4263 flow [2024-06-27 18:32:38,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4263, PETRI_PLACES=313, PETRI_TRANSITIONS=369} [2024-06-27 18:32:38,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-27 18:32:38,966 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 369 transitions, 4263 flow [2024-06-27 18:32:38,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:32:38,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:38,966 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 18:32:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:32:38,966 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:38,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -637171995, now seen corresponding path program 3 times [2024-06-27 18:32:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113432641] [2024-06-27 18:32:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:39,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:39,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113432641] [2024-06-27 18:32:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113432641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754778310] [2024-06-27 18:32:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:39,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:39,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:39,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 369 transitions, 4263 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:39,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:39,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:39,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:42,597 INFO L124 PetriNetUnfolderBase]: 8064/13324 cut-off events. [2024-06-27 18:32:42,597 INFO L125 PetriNetUnfolderBase]: For 786469/786504 co-relation queries the response was YES. [2024-06-27 18:32:42,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89753 conditions, 13324 events. 8064/13324 cut-off events. For 786469/786504 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 97006 event pairs, 2047 based on Foata normal form. 14/12970 useless extension candidates. Maximal degree in co-relation 89615. Up to 11528 conditions per place. [2024-06-27 18:32:42,774 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 343 selfloop transitions, 49 changer transitions 0/410 dead transitions. [2024-06-27 18:32:42,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 410 transitions, 5619 flow [2024-06-27 18:32:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:32:42,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:32:42,775 INFO L175 Difference]: Start difference. First operand has 313 places, 369 transitions, 4263 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:32:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 410 transitions, 5619 flow [2024-06-27 18:32:45,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 410 transitions, 5421 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:45,163 INFO L231 Difference]: Finished difference. Result has 313 places, 375 transitions, 4288 flow [2024-06-27 18:32:45,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4288, PETRI_PLACES=313, PETRI_TRANSITIONS=375} [2024-06-27 18:32:45,164 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-27 18:32:45,164 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 375 transitions, 4288 flow [2024-06-27 18:32:45,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:45,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:45,164 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 18:32:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:32:45,164 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:45,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash 661410213, now seen corresponding path program 4 times [2024-06-27 18:32:45,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:45,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53618055] [2024-06-27 18:32:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:45,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:45,859 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 18:32:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53618055] [2024-06-27 18:32:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53618055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:45,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235441415] [2024-06-27 18:32:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:45,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:45,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 375 transitions, 4288 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:45,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:45,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:48,711 INFO L124 PetriNetUnfolderBase]: 8079/13357 cut-off events. [2024-06-27 18:32:48,711 INFO L125 PetriNetUnfolderBase]: For 783707/783742 co-relation queries the response was YES. [2024-06-27 18:32:48,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89606 conditions, 13357 events. 8079/13357 cut-off events. For 783707/783742 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 97503 event pairs, 2049 based on Foata normal form. 14/13003 useless extension candidates. Maximal degree in co-relation 89467. Up to 11539 conditions per place. [2024-06-27 18:32:48,901 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 338 selfloop transitions, 53 changer transitions 0/409 dead transitions. [2024-06-27 18:32:48,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 409 transitions, 5432 flow [2024-06-27 18:32:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:32:48,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 18:32:48,902 INFO L175 Difference]: Start difference. First operand has 313 places, 375 transitions, 4288 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:32:48,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 409 transitions, 5432 flow [2024-06-27 18:32:51,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 409 transitions, 5278 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:51,307 INFO L231 Difference]: Finished difference. Result has 317 places, 378 transitions, 4308 flow [2024-06-27 18:32:51,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4308, PETRI_PLACES=317, PETRI_TRANSITIONS=378} [2024-06-27 18:32:51,307 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-27 18:32:51,307 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 378 transitions, 4308 flow [2024-06-27 18:32:51,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:51,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:51,307 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 18:32:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:32:51,307 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:51,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 22382983, now seen corresponding path program 5 times [2024-06-27 18:32:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602760902] [2024-06-27 18:32:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:52,167 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 18:32:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602760902] [2024-06-27 18:32:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602760902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:52,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:52,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754576465] [2024-06-27 18:32:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:52,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:52,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 378 transitions, 4308 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:52,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:52,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:55,191 INFO L124 PetriNetUnfolderBase]: 8082/13537 cut-off events. [2024-06-27 18:32:55,191 INFO L125 PetriNetUnfolderBase]: For 794746/794789 co-relation queries the response was YES. [2024-06-27 18:32:55,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89668 conditions, 13537 events. 8082/13537 cut-off events. For 794746/794789 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 100373 event pairs, 2318 based on Foata normal form. 14/13193 useless extension candidates. Maximal degree in co-relation 89527. Up to 11716 conditions per place. [2024-06-27 18:32:55,386 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 353 selfloop transitions, 32 changer transitions 0/403 dead transitions. [2024-06-27 18:32:55,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 403 transitions, 5340 flow [2024-06-27 18:32:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:32:55,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:32:55,387 INFO L175 Difference]: Start difference. First operand has 317 places, 378 transitions, 4308 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:32:55,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 403 transitions, 5340 flow [2024-06-27 18:32:57,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 403 transitions, 5234 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:57,794 INFO L231 Difference]: Finished difference. Result has 320 places, 378 transitions, 4272 flow [2024-06-27 18:32:57,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4272, PETRI_PLACES=320, PETRI_TRANSITIONS=378} [2024-06-27 18:32:57,794 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-27 18:32:57,795 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 378 transitions, 4272 flow [2024-06-27 18:32:57,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:57,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:57,795 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 18:32:57,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:32:57,795 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:57,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash 880271001, now seen corresponding path program 6 times [2024-06-27 18:32:57,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:57,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389637382] [2024-06-27 18:32:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:57,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:58,357 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 18:32:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:58,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389637382] [2024-06-27 18:32:58,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389637382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:58,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:58,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507579189] [2024-06-27 18:32:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:58,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:58,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:32:58,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 378 transitions, 4272 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:58,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:58,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:32:58,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:01,481 INFO L124 PetriNetUnfolderBase]: 8095/13554 cut-off events. [2024-06-27 18:33:01,481 INFO L125 PetriNetUnfolderBase]: For 807919/807962 co-relation queries the response was YES. [2024-06-27 18:33:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89661 conditions, 13554 events. 8095/13554 cut-off events. For 807919/807962 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 100549 event pairs, 2325 based on Foata normal form. 14/13208 useless extension candidates. Maximal degree in co-relation 89519. Up to 11781 conditions per place. [2024-06-27 18:33:01,876 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 357 selfloop transitions, 24 changer transitions 0/399 dead transitions. [2024-06-27 18:33:01,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 399 transitions, 5106 flow [2024-06-27 18:33:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:33:01,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:33:01,877 INFO L175 Difference]: Start difference. First operand has 320 places, 378 transitions, 4272 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:33:01,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 399 transitions, 5106 flow [2024-06-27 18:33:04,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 399 transitions, 5007 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:04,256 INFO L231 Difference]: Finished difference. Result has 323 places, 378 transitions, 4227 flow [2024-06-27 18:33:04,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4227, PETRI_PLACES=323, PETRI_TRANSITIONS=378} [2024-06-27 18:33:04,256 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 269 predicate places. [2024-06-27 18:33:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 378 transitions, 4227 flow [2024-06-27 18:33:04,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:04,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:04,256 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 18:33:04,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:33:04,256 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1542792312, now seen corresponding path program 2 times [2024-06-27 18:33:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974897580] [2024-06-27 18:33:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:05,050 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 18:33:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974897580] [2024-06-27 18:33:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974897580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725946760] [2024-06-27 18:33:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:05,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:05,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:05,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:05,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 378 transitions, 4227 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:05,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:05,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:05,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:08,448 INFO L124 PetriNetUnfolderBase]: 8423/13993 cut-off events. [2024-06-27 18:33:08,448 INFO L125 PetriNetUnfolderBase]: For 827547/827547 co-relation queries the response was YES. [2024-06-27 18:33:08,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91903 conditions, 13993 events. 8423/13993 cut-off events. For 827547/827547 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 103010 event pairs, 2398 based on Foata normal form. 2/13640 useless extension candidates. Maximal degree in co-relation 91760. Up to 12074 conditions per place. [2024-06-27 18:33:08,668 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 352 selfloop transitions, 59 changer transitions 0/420 dead transitions. [2024-06-27 18:33:08,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 420 transitions, 5645 flow [2024-06-27 18:33:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:33:08,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:33:08,670 INFO L175 Difference]: Start difference. First operand has 323 places, 378 transitions, 4227 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:33:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 420 transitions, 5645 flow [2024-06-27 18:33:10,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 420 transitions, 5551 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:10,844 INFO L231 Difference]: Finished difference. Result has 323 places, 384 transitions, 4353 flow [2024-06-27 18:33:10,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4353, PETRI_PLACES=323, PETRI_TRANSITIONS=384} [2024-06-27 18:33:10,845 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 269 predicate places. [2024-06-27 18:33:10,845 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 384 transitions, 4353 flow [2024-06-27 18:33:10,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:10,845 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 18:33:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:33:10,845 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:10,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 880279898, now seen corresponding path program 3 times [2024-06-27 18:33:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123930888] [2024-06-27 18:33:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:11,683 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 18:33:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123930888] [2024-06-27 18:33:11,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123930888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:11,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:11,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:11,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920342400] [2024-06-27 18:33:11,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:11,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:11,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:11,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:11,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 384 transitions, 4353 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:11,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:11,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:11,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:14,905 INFO L124 PetriNetUnfolderBase]: 8417/13987 cut-off events. [2024-06-27 18:33:14,905 INFO L125 PetriNetUnfolderBase]: For 837601/837601 co-relation queries the response was YES. [2024-06-27 18:33:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92102 conditions, 13987 events. 8417/13987 cut-off events. For 837601/837601 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 102993 event pairs, 2408 based on Foata normal form. 2/13636 useless extension candidates. Maximal degree in co-relation 91958. Up to 12069 conditions per place. [2024-06-27 18:33:15,095 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 353 selfloop transitions, 57 changer transitions 0/419 dead transitions. [2024-06-27 18:33:15,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 419 transitions, 5513 flow [2024-06-27 18:33:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:33:15,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:33:15,096 INFO L175 Difference]: Start difference. First operand has 323 places, 384 transitions, 4353 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:33:15,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 419 transitions, 5513 flow [2024-06-27 18:33:17,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 419 transitions, 5357 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:17,071 INFO L231 Difference]: Finished difference. Result has 327 places, 384 transitions, 4317 flow [2024-06-27 18:33:17,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4317, PETRI_PLACES=327, PETRI_TRANSITIONS=384} [2024-06-27 18:33:17,072 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-06-27 18:33:17,072 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 384 transitions, 4317 flow [2024-06-27 18:33:17,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:17,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:17,072 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 18:33:17,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:33:17,073 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:17,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:17,073 INFO L85 PathProgramCache]: Analyzing trace with hash -245933478, now seen corresponding path program 4 times [2024-06-27 18:33:17,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:17,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834300007] [2024-06-27 18:33:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:17,854 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 18:33:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834300007] [2024-06-27 18:33:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834300007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116318663] [2024-06-27 18:33:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:17,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:17,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 384 transitions, 4317 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:17,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:17,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:17,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:21,152 INFO L124 PetriNetUnfolderBase]: 8411/13979 cut-off events. [2024-06-27 18:33:21,152 INFO L125 PetriNetUnfolderBase]: For 845434/845434 co-relation queries the response was YES. [2024-06-27 18:33:21,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91844 conditions, 13979 events. 8411/13979 cut-off events. For 845434/845434 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 102939 event pairs, 2391 based on Foata normal form. 2/13627 useless extension candidates. Maximal degree in co-relation 91699. Up to 12064 conditions per place. [2024-06-27 18:33:21,366 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 348 selfloop transitions, 61 changer transitions 0/418 dead transitions. [2024-06-27 18:33:21,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 418 transitions, 5311 flow [2024-06-27 18:33:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:33:21,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-27 18:33:21,367 INFO L175 Difference]: Start difference. First operand has 327 places, 384 transitions, 4317 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:33:21,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 418 transitions, 5311 flow [2024-06-27 18:33:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 418 transitions, 5129 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:33:23,436 INFO L231 Difference]: Finished difference. Result has 328 places, 384 transitions, 4263 flow [2024-06-27 18:33:23,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4263, PETRI_PLACES=328, PETRI_TRANSITIONS=384} [2024-06-27 18:33:23,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 274 predicate places. [2024-06-27 18:33:23,436 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 384 transitions, 4263 flow [2024-06-27 18:33:23,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:33:23,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:23,436 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 18:33:23,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:33:23,437 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:23,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -628592187, now seen corresponding path program 1 times [2024-06-27 18:33:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638808078] [2024-06-27 18:33:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:24,249 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 18:33:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638808078] [2024-06-27 18:33:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638808078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524933856] [2024-06-27 18:33:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:24,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:33:24,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 384 transitions, 4263 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:33:24,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:24,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:33:24,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:27,291 INFO L124 PetriNetUnfolderBase]: 7834/12831 cut-off events. [2024-06-27 18:33:27,291 INFO L125 PetriNetUnfolderBase]: For 747884/747901 co-relation queries the response was YES. [2024-06-27 18:33:27,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84787 conditions, 12831 events. 7834/12831 cut-off events. For 747884/747901 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 92264 event pairs, 1820 based on Foata normal form. 1/12546 useless extension candidates. Maximal degree in co-relation 84642. Up to 11344 conditions per place. [2024-06-27 18:33:27,476 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 379 selfloop transitions, 35 changer transitions 0/438 dead transitions. [2024-06-27 18:33:27,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 438 transitions, 5607 flow [2024-06-27 18:33:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:33:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:33:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:33:27,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-27 18:33:27,477 INFO L175 Difference]: Start difference. First operand has 328 places, 384 transitions, 4263 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:33:27,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 438 transitions, 5607 flow [2024-06-27 18:33:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 438 transitions, 5493 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:29,929 INFO L231 Difference]: Finished difference. Result has 332 places, 393 transitions, 4421 flow [2024-06-27 18:33:29,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4421, PETRI_PLACES=332, PETRI_TRANSITIONS=393} [2024-06-27 18:33:29,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 278 predicate places. [2024-06-27 18:33:29,929 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 393 transitions, 4421 flow [2024-06-27 18:33:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:33:29,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:29,930 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 18:33:29,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:33:29,930 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:29,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash 657700226, now seen corresponding path program 1 times [2024-06-27 18:33:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950259227] [2024-06-27 18:33:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:30,808 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 18:33:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950259227] [2024-06-27 18:33:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950259227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:30,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146494894] [2024-06-27 18:33:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:30,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:33:30,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 393 transitions, 4421 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:33:30,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:30,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:33:30,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand