./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_pso.opt_tso.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/mix034_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:32:52,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:52,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:52,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:52,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:52,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:52,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:52,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:52,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:52,187 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:52,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:52,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:52,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:52,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:52,188 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:52,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:52,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:52,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:52,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:52,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:52,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:52,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:52,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:52,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:52,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:52,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:52,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:52,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:52,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:52,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:52,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:52,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:52,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:52,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:52,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:52,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:52,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:52,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:52,198 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:52,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:52,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:52,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:52,413 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:52,413 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:52,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-28 01:32:53,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:53,593 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:53,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-28 01:32:53,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52078f51c/5b459c0256214827b86ec20b4c97f106/FLAG1b56f3e6c [2024-06-28 01:32:53,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52078f51c/5b459c0256214827b86ec20b4c97f106 [2024-06-28 01:32:53,634 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:53,634 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:53,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_pso.opt_tso.opt.yml/witness.yml [2024-06-28 01:32:53,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:53,746 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:53,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:53,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:53,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:53,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:53" (1/2) ... [2024-06-28 01:32:53,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5947d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:53" (1/2) ... [2024-06-28 01:32:53,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7439bd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/2) ... [2024-06-28 01:32:53,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5947d33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/2) ... [2024-06-28 01:32:53,758 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:53,808 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:53,809 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] ((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:32:53,810 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:32:53,810 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:53,810 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 01:32:53,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:54,014 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/mix034_pso.opt_tso.opt.i[999,1012] [2024-06-28 01:32:54,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:54,196 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:54,235 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/mix034_pso.opt_tso.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:54,310 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:54,342 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:54,343 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54 WrapperNode [2024-06-28 01:32:54,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:54,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:54,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:54,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:54,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,410 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-06-28 01:32:54,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:54,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:54,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:54,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:54,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,467 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:32:54,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:54,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:54,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:54,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:54,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:54,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:32:54,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:32:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:54,543 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:32:54,679 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:54,681 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:54,967 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:54,968 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:55,082 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:55,082 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:55,084 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:55 BoogieIcfgContainer [2024-06-28 01:32:55,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:55,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:55,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:55,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:55,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:53" (1/4) ... [2024-06-28 01:32:55,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495a714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/4) ... [2024-06-28 01:32:55,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495a714c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (3/4) ... [2024-06-28 01:32:55,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495a714c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:55" (4/4) ... [2024-06-28 01:32:55,097 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_pso.opt_tso.opt.i [2024-06-28 01:32:55,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:55,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:32:55,143 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:55,189 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:55,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:32:55,250 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:32:55,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:55,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:32:55,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:32:55,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:32:55,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:55,282 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;@188165e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:55,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:32:55,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:55,287 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:32:55,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:55,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:55,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:55,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash 307960714, now seen corresponding path program 1 times [2024-06-28 01:32:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698838728] [2024-06-28 01:32:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698838728] [2024-06-28 01:32:56,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698838728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475141087] [2024-06-28 01:32:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:56,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:56,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 01:32:56,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 01:32:56,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:56,447 INFO L124 PetriNetUnfolderBase]: 384/783 cut-off events. [2024-06-28 01:32:56,448 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 01:32:56,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 783 events. 384/783 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4424 event pairs, 284 based on Foata normal form. 31/728 useless extension candidates. Maximal degree in co-relation 1436. Up to 639 conditions per place. [2024-06-28 01:32:56,470 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:32:56,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 165 flow [2024-06-28 01:32:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 01:32:56,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-28 01:32:56,480 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-28 01:32:56,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 165 flow [2024-06-28 01:32:56,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:56,484 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:32:56,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:32:56,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:32:56,488 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:32:56,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:56,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:56,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:56,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:56,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash -402458967, now seen corresponding path program 1 times [2024-06-28 01:32:56,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:56,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871972099] [2024-06-28 01:32:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871972099] [2024-06-28 01:32:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871972099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309354597] [2024-06-28 01:32:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:32:56,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:32:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,068 INFO L124 PetriNetUnfolderBase]: 434/875 cut-off events. [2024-06-28 01:32:57,069 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-06-28 01:32:57,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 875 events. 434/875 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4931 event pairs, 204 based on Foata normal form. 4/806 useless extension candidates. Maximal degree in co-relation 1791. Up to 686 conditions per place. [2024-06-28 01:32:57,074 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 01:32:57,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 240 flow [2024-06-28 01:32:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-28 01:32:57,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-06-28 01:32:57,076 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 100 transitions. [2024-06-28 01:32:57,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 240 flow [2024-06-28 01:32:57,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:57,078 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-28 01:32:57,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:32:57,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 01:32:57,079 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-28 01:32:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:57,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:57,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:57,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 407827728, now seen corresponding path program 1 times [2024-06-28 01:32:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:57,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285068222] [2024-06-28 01:32:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285068222] [2024-06-28 01:32:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285068222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896388738] [2024-06-28 01:32:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:57,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 37 [2024-06-28 01:32:57,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 37 [2024-06-28 01:32:57,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,196 INFO L124 PetriNetUnfolderBase]: 130/345 cut-off events. [2024-06-28 01:32:57,197 INFO L125 PetriNetUnfolderBase]: For 109/116 co-relation queries the response was YES. [2024-06-28 01:32:57,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 345 events. 130/345 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1869 event pairs, 31 based on Foata normal form. 6/331 useless extension candidates. Maximal degree in co-relation 681. Up to 182 conditions per place. [2024-06-28 01:32:57,198 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 19 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-06-28 01:32:57,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 177 flow [2024-06-28 01:32:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-28 01:32:57,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-28 01:32:57,200 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 3 states and 83 transitions. [2024-06-28 01:32:57,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 177 flow [2024-06-28 01:32:57,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:57,202 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 114 flow [2024-06-28 01:32:57,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 01:32:57,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 01:32:57,203 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 114 flow [2024-06-28 01:32:57,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:57,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:57,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:57,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -453269520, now seen corresponding path program 1 times [2024-06-28 01:32:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455910968] [2024-06-28 01:32:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455910968] [2024-06-28 01:32:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455910968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031186443] [2024-06-28 01:32:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:57,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:32:57,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:32:57,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,206 INFO L124 PetriNetUnfolderBase]: 375/679 cut-off events. [2024-06-28 01:32:58,206 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-06-28 01:32:58,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 679 events. 375/679 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3336 event pairs, 25 based on Foata normal form. 4/675 useless extension candidates. Maximal degree in co-relation 1558. Up to 554 conditions per place. [2024-06-28 01:32:58,210 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 44 selfloop transitions, 8 changer transitions 5/68 dead transitions. [2024-06-28 01:32:58,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 296 flow [2024-06-28 01:32:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:32:58,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171171171171171 [2024-06-28 01:32:58,212 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 114 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:32:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 296 flow [2024-06-28 01:32:58,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:58,214 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 129 flow [2024-06-28 01:32:58,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-28 01:32:58,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-28 01:32:58,215 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 129 flow [2024-06-28 01:32:58,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:58,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:58,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1079448319, now seen corresponding path program 1 times [2024-06-28 01:32:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488483191] [2024-06-28 01:32:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488483191] [2024-06-28 01:32:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488483191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:58,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:58,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409750204] [2024-06-28 01:32:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:58,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:58,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:58,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:32:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:58,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:32:58,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,946 INFO L124 PetriNetUnfolderBase]: 318/671 cut-off events. [2024-06-28 01:32:58,946 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-28 01:32:58,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 671 events. 318/671 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3584 event pairs, 107 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 1547. Up to 524 conditions per place. [2024-06-28 01:32:58,950 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 36 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 01:32:58,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 262 flow [2024-06-28 01:32:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 01:32:58,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297297297297298 [2024-06-28 01:32:58,951 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 129 flow. Second operand 5 states and 98 transitions. [2024-06-28 01:32:58,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 262 flow [2024-06-28 01:32:58,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 242 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:58,954 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 165 flow [2024-06-28 01:32:58,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-06-28 01:32:58,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:32:58,955 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 165 flow [2024-06-28 01:32:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:58,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:58,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -896839634, now seen corresponding path program 1 times [2024-06-28 01:32:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533122162] [2024-06-28 01:32:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533122162] [2024-06-28 01:32:59,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533122162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:59,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616232007] [2024-06-28 01:32:59,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:59,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:32:59,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:32:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:59,704 INFO L124 PetriNetUnfolderBase]: 377/766 cut-off events. [2024-06-28 01:32:59,704 INFO L125 PetriNetUnfolderBase]: For 619/619 co-relation queries the response was YES. [2024-06-28 01:32:59,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 766 events. 377/766 cut-off events. For 619/619 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4081 event pairs, 127 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 1890. Up to 608 conditions per place. [2024-06-28 01:32:59,708 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 42 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-06-28 01:32:59,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 313 flow [2024-06-28 01:32:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-28 01:32:59,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-28 01:32:59,711 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 165 flow. Second operand 6 states and 112 transitions. [2024-06-28 01:32:59,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 313 flow [2024-06-28 01:32:59,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:59,715 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 191 flow [2024-06-28 01:32:59,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-06-28 01:32:59,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 01:32:59,718 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 191 flow [2024-06-28 01:32:59,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:59,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:59,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 382242424, now seen corresponding path program 1 times [2024-06-28 01:32:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:59,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981152846] [2024-06-28 01:32:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:59,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981152846] [2024-06-28 01:33:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981152846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583350309] [2024-06-28 01:33:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:00,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:00,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:00,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:00,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,508 INFO L124 PetriNetUnfolderBase]: 426/852 cut-off events. [2024-06-28 01:33:00,508 INFO L125 PetriNetUnfolderBase]: For 1073/1073 co-relation queries the response was YES. [2024-06-28 01:33:00,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 852 events. 426/852 cut-off events. For 1073/1073 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4576 event pairs, 137 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 2230. Up to 665 conditions per place. [2024-06-28 01:33:00,513 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 47 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-28 01:33:00,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 371 flow [2024-06-28 01:33:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 01:33:00,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-06-28 01:33:00,515 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 191 flow. Second operand 6 states and 115 transitions. [2024-06-28 01:33:00,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 371 flow [2024-06-28 01:33:00,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 352 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:00,520 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 233 flow [2024-06-28 01:33:00,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-28 01:33:00,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 01:33:00,522 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 233 flow [2024-06-28 01:33:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:00,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:00,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:33:00,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:00,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2032232930, now seen corresponding path program 2 times [2024-06-28 01:33:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:00,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312424956] [2024-06-28 01:33:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312424956] [2024-06-28 01:33:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312424956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873315227] [2024-06-28 01:33:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:01,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:01,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:01,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:01,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,247 INFO L124 PetriNetUnfolderBase]: 430/873 cut-off events. [2024-06-28 01:33:01,247 INFO L125 PetriNetUnfolderBase]: For 1532/1538 co-relation queries the response was YES. [2024-06-28 01:33:01,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2479 conditions, 873 events. 430/873 cut-off events. For 1532/1538 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4726 event pairs, 129 based on Foata normal form. 6/847 useless extension candidates. Maximal degree in co-relation 2455. Up to 640 conditions per place. [2024-06-28 01:33:01,251 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 46 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-28 01:33:01,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 413 flow [2024-06-28 01:33:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 01:33:01,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-28 01:33:01,253 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 233 flow. Second operand 6 states and 116 transitions. [2024-06-28 01:33:01,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 413 flow [2024-06-28 01:33:01,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 394 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:01,256 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 261 flow [2024-06-28 01:33:01,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-28 01:33:01,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-28 01:33:01,257 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 261 flow [2024-06-28 01:33:01,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:33:01,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:01,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2032224002, now seen corresponding path program 1 times [2024-06-28 01:33:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284365644] [2024-06-28 01:33:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:01,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284365644] [2024-06-28 01:33:01,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284365644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:01,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651974609] [2024-06-28 01:33:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:01,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:33:01,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:01,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:02,004 INFO L124 PetriNetUnfolderBase]: 412/851 cut-off events. [2024-06-28 01:33:02,004 INFO L125 PetriNetUnfolderBase]: For 1600/1600 co-relation queries the response was YES. [2024-06-28 01:33:02,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 851 events. 412/851 cut-off events. For 1600/1600 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4651 event pairs, 122 based on Foata normal form. 1/820 useless extension candidates. Maximal degree in co-relation 2483. Up to 652 conditions per place. [2024-06-28 01:33:02,008 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 54 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-06-28 01:33:02,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 457 flow [2024-06-28 01:33:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:33:02,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:33:02,010 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 261 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:33:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 457 flow [2024-06-28 01:33:02,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 426 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:02,012 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 271 flow [2024-06-28 01:33:02,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-28 01:33:02,013 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-28 01:33:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 271 flow [2024-06-28 01:33:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:33:02,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:33:02,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1247114258, now seen corresponding path program 1 times [2024-06-28 01:33:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628541563] [2024-06-28 01:33:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628541563] [2024-06-28 01:33:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628541563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:02,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993282372] [2024-06-28 01:33:02,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:02,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:02,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:02,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:33:02,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:02,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:02,959 INFO L124 PetriNetUnfolderBase]: 433/847 cut-off events. [2024-06-28 01:33:02,959 INFO L125 PetriNetUnfolderBase]: For 2078/2080 co-relation queries the response was YES. [2024-06-28 01:33:02,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 847 events. 433/847 cut-off events. For 2078/2080 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4567 event pairs, 133 based on Foata normal form. 3/828 useless extension candidates. Maximal degree in co-relation 2625. Up to 674 conditions per place. [2024-06-28 01:33:02,963 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 58 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2024-06-28 01:33:02,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 501 flow [2024-06-28 01:33:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 01:33:02,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-28 01:33:02,965 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 271 flow. Second operand 7 states and 134 transitions. [2024-06-28 01:33:02,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 501 flow [2024-06-28 01:33:02,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 476 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:02,968 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 323 flow [2024-06-28 01:33:02,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-28 01:33:02,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 01:33:02,968 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 323 flow [2024-06-28 01:33:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-28 01:33:02,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:33:02,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:02,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1247235375, now seen corresponding path program 1 times [2024-06-28 01:33:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:02,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236714738] [2024-06-28 01:33:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:03,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236714738] [2024-06-28 01:33:03,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236714738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368190271] [2024-06-28 01:33:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:03,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:03,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:03,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:03,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:03,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,868 INFO L124 PetriNetUnfolderBase]: 494/934 cut-off events. [2024-06-28 01:33:03,869 INFO L125 PetriNetUnfolderBase]: For 2663/2663 co-relation queries the response was YES. [2024-06-28 01:33:03,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 934 events. 494/934 cut-off events. For 2663/2663 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4964 event pairs, 147 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 3024. Up to 753 conditions per place. [2024-06-28 01:33:03,874 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 64 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-28 01:33:03,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 557 flow [2024-06-28 01:33:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:33:03,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:33:03,875 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 323 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:33:03,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 557 flow [2024-06-28 01:33:03,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 522 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:03,879 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 335 flow [2024-06-28 01:33:03,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-28 01:33:03,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-28 01:33:03,879 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 335 flow [2024-06-28 01:33:03,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:33:03,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:03,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1425289455, now seen corresponding path program 2 times [2024-06-28 01:33:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864472131] [2024-06-28 01:33:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864472131] [2024-06-28 01:33:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864472131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763863081] [2024-06-28 01:33:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:04,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:04,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:04,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:04,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,706 INFO L124 PetriNetUnfolderBase]: 532/1056 cut-off events. [2024-06-28 01:33:04,706 INFO L125 PetriNetUnfolderBase]: For 3583/3592 co-relation queries the response was YES. [2024-06-28 01:33:04,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 1056 events. 532/1056 cut-off events. For 3583/3592 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5804 event pairs, 150 based on Foata normal form. 8/1024 useless extension candidates. Maximal degree in co-relation 3445. Up to 717 conditions per place. [2024-06-28 01:33:04,712 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 62 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-28 01:33:04,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 629 flow [2024-06-28 01:33:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 01:33:04,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-28 01:33:04,713 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 335 flow. Second operand 7 states and 132 transitions. [2024-06-28 01:33:04,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 629 flow [2024-06-28 01:33:04,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 598 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:04,717 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 387 flow [2024-06-28 01:33:04,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-28 01:33:04,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 01:33:04,719 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 387 flow [2024-06-28 01:33:04,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:04,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:33:04,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:04,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1425556365, now seen corresponding path program 3 times [2024-06-28 01:33:04,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729191067] [2024-06-28 01:33:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729191067] [2024-06-28 01:33:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729191067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:05,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:05,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036583312] [2024-06-28 01:33:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:05,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:05,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:05,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:05,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:05,583 INFO L124 PetriNetUnfolderBase]: 528/1055 cut-off events. [2024-06-28 01:33:05,583 INFO L125 PetriNetUnfolderBase]: For 4068/4077 co-relation queries the response was YES. [2024-06-28 01:33:05,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 1055 events. 528/1055 cut-off events. For 4068/4077 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5851 event pairs, 141 based on Foata normal form. 8/1019 useless extension candidates. Maximal degree in co-relation 3552. Up to 714 conditions per place. [2024-06-28 01:33:05,589 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 60 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-28 01:33:05,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 621 flow [2024-06-28 01:33:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:33:05,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:33:05,590 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 387 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:33:05,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 621 flow [2024-06-28 01:33:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 579 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:05,596 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 390 flow [2024-06-28 01:33:05,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-28 01:33:05,596 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 01:33:05,596 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 390 flow [2024-06-28 01:33:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:05,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:05,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:33:05,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:05,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 669118497, now seen corresponding path program 1 times [2024-06-28 01:33:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826111620] [2024-06-28 01:33:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826111620] [2024-06-28 01:33:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826111620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948833084] [2024-06-28 01:33:06,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:06,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:06,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 390 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:06,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:06,683 INFO L124 PetriNetUnfolderBase]: 577/1105 cut-off events. [2024-06-28 01:33:06,684 INFO L125 PetriNetUnfolderBase]: For 4471/4471 co-relation queries the response was YES. [2024-06-28 01:33:06,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3958 conditions, 1105 events. 577/1105 cut-off events. For 4471/4471 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6132 event pairs, 173 based on Foata normal form. 1/1074 useless extension candidates. Maximal degree in co-relation 3926. Up to 880 conditions per place. [2024-06-28 01:33:06,689 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 74 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-06-28 01:33:06,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 768 flow [2024-06-28 01:33:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:33:06,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:33:06,691 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 390 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:33:06,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 768 flow [2024-06-28 01:33:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 717 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:06,695 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 531 flow [2024-06-28 01:33:06,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=531, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-06-28 01:33:06,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-28 01:33:06,696 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 531 flow [2024-06-28 01:33:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:33:06,697 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:06,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -833431357, now seen corresponding path program 2 times [2024-06-28 01:33:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927670332] [2024-06-28 01:33:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:07,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927670332] [2024-06-28 01:33:07,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927670332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:07,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:07,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535703356] [2024-06-28 01:33:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:07,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:07,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:07,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:07,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 531 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:07,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:07,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:07,877 INFO L124 PetriNetUnfolderBase]: 581/1114 cut-off events. [2024-06-28 01:33:07,877 INFO L125 PetriNetUnfolderBase]: For 5116/5116 co-relation queries the response was YES. [2024-06-28 01:33:07,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 1114 events. 581/1114 cut-off events. For 5116/5116 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6215 event pairs, 166 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 4137. Up to 845 conditions per place. [2024-06-28 01:33:07,886 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 76 selfloop transitions, 30 changer transitions 0/114 dead transitions. [2024-06-28 01:33:07,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 895 flow [2024-06-28 01:33:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:33:07,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:07,887 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 531 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:33:07,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 895 flow [2024-06-28 01:33:07,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 853 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:07,893 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 626 flow [2024-06-28 01:33:07,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=626, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2024-06-28 01:33:07,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 01:33:07,895 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 626 flow [2024-06-28 01:33:07,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:07,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:07,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:33:07,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:07,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2032190921, now seen corresponding path program 1 times [2024-06-28 01:33:07,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429298610] [2024-06-28 01:33:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:07,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:08,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429298610] [2024-06-28 01:33:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429298610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:08,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620134014] [2024-06-28 01:33:08,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:08,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:08,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:08,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:08,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:08,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,844 INFO L124 PetriNetUnfolderBase]: 603/1139 cut-off events. [2024-06-28 01:33:08,844 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2024-06-28 01:33:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 1139 events. 603/1139 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6302 event pairs, 164 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 4425. Up to 887 conditions per place. [2024-06-28 01:33:08,850 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2024-06-28 01:33:08,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 972 flow [2024-06-28 01:33:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:33:08,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:33:08,852 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 626 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:33:08,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 972 flow [2024-06-28 01:33:08,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 910 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:08,859 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 627 flow [2024-06-28 01:33:08,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=627, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-06-28 01:33:08,860 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 01:33:08,860 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 627 flow [2024-06-28 01:33:08,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:08,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:33:08,861 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:08,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 154376097, now seen corresponding path program 2 times [2024-06-28 01:33:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974915870] [2024-06-28 01:33:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974915870] [2024-06-28 01:33:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974915870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606731046] [2024-06-28 01:33:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:09,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:09,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 627 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:09,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:09,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:09,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,752 INFO L124 PetriNetUnfolderBase]: 641/1248 cut-off events. [2024-06-28 01:33:09,752 INFO L125 PetriNetUnfolderBase]: For 7371/7380 co-relation queries the response was YES. [2024-06-28 01:33:09,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4919 conditions, 1248 events. 641/1248 cut-off events. For 7371/7380 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7045 event pairs, 169 based on Foata normal form. 8/1212 useless extension candidates. Maximal degree in co-relation 4879. Up to 778 conditions per place. [2024-06-28 01:33:09,759 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 89 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2024-06-28 01:33:09,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 124 transitions, 1065 flow [2024-06-28 01:33:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:33:09,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:33:09,761 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 627 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:33:09,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 124 transitions, 1065 flow [2024-06-28 01:33:09,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 124 transitions, 1018 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:09,770 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 712 flow [2024-06-28 01:33:09,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=712, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-06-28 01:33:09,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 01:33:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 712 flow [2024-06-28 01:33:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:09,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:09,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:09,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:33:09,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:09,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1242575231, now seen corresponding path program 3 times [2024-06-28 01:33:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83607524] [2024-06-28 01:33:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83607524] [2024-06-28 01:33:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83607524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612979456] [2024-06-28 01:33:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:10,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:10,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 712 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:10,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:10,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:10,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:10,694 INFO L124 PetriNetUnfolderBase]: 663/1300 cut-off events. [2024-06-28 01:33:10,695 INFO L125 PetriNetUnfolderBase]: For 8563/8572 co-relation queries the response was YES. [2024-06-28 01:33:10,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 1300 events. 663/1300 cut-off events. For 8563/8572 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7435 event pairs, 148 based on Foata normal form. 8/1258 useless extension candidates. Maximal degree in co-relation 5271. Up to 796 conditions per place. [2024-06-28 01:33:10,703 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 88 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2024-06-28 01:33:10,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 1128 flow [2024-06-28 01:33:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:33:10,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 01:33:10,707 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 712 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:33:10,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 1128 flow [2024-06-28 01:33:10,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 1090 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:10,722 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 767 flow [2024-06-28 01:33:10,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-06-28 01:33:10,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-28 01:33:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 767 flow [2024-06-28 01:33:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:10,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:10,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:33:10,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:10,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1242871901, now seen corresponding path program 4 times [2024-06-28 01:33:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920381850] [2024-06-28 01:33:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:11,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:11,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920381850] [2024-06-28 01:33:11,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920381850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:11,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:11,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:11,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341518776] [2024-06-28 01:33:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:11,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:11,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 767 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:11,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:11,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:11,671 INFO L124 PetriNetUnfolderBase]: 659/1263 cut-off events. [2024-06-28 01:33:11,672 INFO L125 PetriNetUnfolderBase]: For 8611/8611 co-relation queries the response was YES. [2024-06-28 01:33:11,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 1263 events. 659/1263 cut-off events. For 8611/8611 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7039 event pairs, 142 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 5324. Up to 793 conditions per place. [2024-06-28 01:33:11,681 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 84 selfloop transitions, 35 changer transitions 0/127 dead transitions. [2024-06-28 01:33:11,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 1151 flow [2024-06-28 01:33:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:33:11,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-28 01:33:11,684 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 767 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:33:11,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 1151 flow [2024-06-28 01:33:11,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1066 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:11,700 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 790 flow [2024-06-28 01:33:11,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2024-06-28 01:33:11,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-28 01:33:11,701 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 790 flow [2024-06-28 01:33:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:33:11,701 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:11,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1242882813, now seen corresponding path program 1 times [2024-06-28 01:33:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215744923] [2024-06-28 01:33:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215744923] [2024-06-28 01:33:12,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215744923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763770327] [2024-06-28 01:33:12,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:12,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:12,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:12,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:12,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,983 INFO L124 PetriNetUnfolderBase]: 660/1266 cut-off events. [2024-06-28 01:33:12,984 INFO L125 PetriNetUnfolderBase]: For 8383/8383 co-relation queries the response was YES. [2024-06-28 01:33:12,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1266 events. 660/1266 cut-off events. For 8383/8383 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7276 event pairs, 191 based on Foata normal form. 1/1225 useless extension candidates. Maximal degree in co-relation 5314. Up to 1020 conditions per place. [2024-06-28 01:33:12,993 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-06-28 01:33:12,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 128 transitions, 1146 flow [2024-06-28 01:33:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:33:12,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:33:12,994 INFO L175 Difference]: Start difference. First operand has 104 places, 96 transitions, 790 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:33:12,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 128 transitions, 1146 flow [2024-06-28 01:33:13,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 128 transitions, 1095 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:13,006 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 790 flow [2024-06-28 01:33:13,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-06-28 01:33:13,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-28 01:33:13,007 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 790 flow [2024-06-28 01:33:13,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:13,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:13,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:33:13,008 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:13,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1307304695, now seen corresponding path program 1 times [2024-06-28 01:33:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687295395] [2024-06-28 01:33:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687295395] [2024-06-28 01:33:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687295395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:13,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954500671] [2024-06-28 01:33:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:13,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:13,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:13,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:13,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,120 INFO L124 PetriNetUnfolderBase]: 601/1185 cut-off events. [2024-06-28 01:33:14,120 INFO L125 PetriNetUnfolderBase]: For 9223/9229 co-relation queries the response was YES. [2024-06-28 01:33:14,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5080 conditions, 1185 events. 601/1185 cut-off events. For 9223/9229 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6849 event pairs, 114 based on Foata normal form. 4/1148 useless extension candidates. Maximal degree in co-relation 5032. Up to 857 conditions per place. [2024-06-28 01:33:14,127 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 88 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-28 01:33:14,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 127 transitions, 1116 flow [2024-06-28 01:33:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:33:14,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 01:33:14,128 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 790 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:33:14,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 127 transitions, 1116 flow [2024-06-28 01:33:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 1033 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:14,138 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 794 flow [2024-06-28 01:33:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=794, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-06-28 01:33:14,138 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-28 01:33:14,138 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 794 flow [2024-06-28 01:33:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:14,139 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:14,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1551869811, now seen corresponding path program 2 times [2024-06-28 01:33:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721281861] [2024-06-28 01:33:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:14,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721281861] [2024-06-28 01:33:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721281861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:14,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:14,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289060907] [2024-06-28 01:33:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:14,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:14,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:14,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 794 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:14,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:15,244 INFO L124 PetriNetUnfolderBase]: 613/1193 cut-off events. [2024-06-28 01:33:15,244 INFO L125 PetriNetUnfolderBase]: For 10054/10060 co-relation queries the response was YES. [2024-06-28 01:33:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 1193 events. 613/1193 cut-off events. For 10054/10060 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6885 event pairs, 157 based on Foata normal form. 4/1162 useless extension candidates. Maximal degree in co-relation 5143. Up to 887 conditions per place. [2024-06-28 01:33:15,251 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 88 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-06-28 01:33:15,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 129 transitions, 1126 flow [2024-06-28 01:33:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:33:15,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:33:15,252 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 794 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:33:15,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 129 transitions, 1126 flow [2024-06-28 01:33:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 129 transitions, 1069 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:15,263 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 810 flow [2024-06-28 01:33:15,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=810, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-06-28 01:33:15,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 01:33:15,263 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 810 flow [2024-06-28 01:33:15,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:15,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:15,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:15,264 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:15,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash 297132373, now seen corresponding path program 3 times [2024-06-28 01:33:15,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:15,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867265378] [2024-06-28 01:33:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:15,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867265378] [2024-06-28 01:33:15,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867265378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:15,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106362113] [2024-06-28 01:33:15,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:15,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:15,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:15,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:15,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 810 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:15,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,336 INFO L124 PetriNetUnfolderBase]: 629/1229 cut-off events. [2024-06-28 01:33:16,336 INFO L125 PetriNetUnfolderBase]: For 11143/11149 co-relation queries the response was YES. [2024-06-28 01:33:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 1229 events. 629/1229 cut-off events. For 11143/11149 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7199 event pairs, 153 based on Foata normal form. 4/1196 useless extension candidates. Maximal degree in co-relation 5331. Up to 945 conditions per place. [2024-06-28 01:33:16,342 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 100 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-28 01:33:16,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 1166 flow [2024-06-28 01:33:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:33:16,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-28 01:33:16,343 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 810 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:33:16,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 1166 flow [2024-06-28 01:33:16,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 132 transitions, 1105 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:16,355 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 821 flow [2024-06-28 01:33:16,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=821, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2024-06-28 01:33:16,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-28 01:33:16,356 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 821 flow [2024-06-28 01:33:16,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:33:16,357 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:16,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 291775945, now seen corresponding path program 1 times [2024-06-28 01:33:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052319033] [2024-06-28 01:33:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052319033] [2024-06-28 01:33:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052319033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:17,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898524580] [2024-06-28 01:33:17,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:17,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:17,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:17,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:17,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:17,464 INFO L124 PetriNetUnfolderBase]: 709/1367 cut-off events. [2024-06-28 01:33:17,465 INFO L125 PetriNetUnfolderBase]: For 11170/11170 co-relation queries the response was YES. [2024-06-28 01:33:17,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1367 events. 709/1367 cut-off events. For 11170/11170 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8033 event pairs, 189 based on Foata normal form. 1/1324 useless extension candidates. Maximal degree in co-relation 5781. Up to 1037 conditions per place. [2024-06-28 01:33:17,472 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 100 selfloop transitions, 33 changer transitions 0/141 dead transitions. [2024-06-28 01:33:17,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 141 transitions, 1229 flow [2024-06-28 01:33:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:33:17,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:33:17,474 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 821 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:33:17,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 141 transitions, 1229 flow [2024-06-28 01:33:17,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 141 transitions, 1183 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:17,489 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 879 flow [2024-06-28 01:33:17,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=879, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2024-06-28 01:33:17,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 01:33:17,489 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 879 flow [2024-06-28 01:33:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:17,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:17,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:17,490 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:17,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 297347854, now seen corresponding path program 1 times [2024-06-28 01:33:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501401712] [2024-06-28 01:33:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:18,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501401712] [2024-06-28 01:33:18,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501401712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:18,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:18,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443883413] [2024-06-28 01:33:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:18,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:18,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:18,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 879 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:18,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:18,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:18,432 INFO L124 PetriNetUnfolderBase]: 731/1388 cut-off events. [2024-06-28 01:33:18,432 INFO L125 PetriNetUnfolderBase]: For 12254/12254 co-relation queries the response was YES. [2024-06-28 01:33:18,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1388 events. 731/1388 cut-off events. For 12254/12254 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8091 event pairs, 192 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 6014. Up to 1068 conditions per place. [2024-06-28 01:33:18,441 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 114 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-28 01:33:18,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 143 transitions, 1309 flow [2024-06-28 01:33:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:33:18,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-28 01:33:18,442 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 879 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:33:18,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 143 transitions, 1309 flow [2024-06-28 01:33:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 143 transitions, 1223 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:18,459 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 872 flow [2024-06-28 01:33:18,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=872, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2024-06-28 01:33:18,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-28 01:33:18,460 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 872 flow [2024-06-28 01:33:18,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:18,461 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:18,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1619721079, now seen corresponding path program 4 times [2024-06-28 01:33:18,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357551154] [2024-06-28 01:33:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357551154] [2024-06-28 01:33:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357551154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056350917] [2024-06-28 01:33:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:19,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:33:19,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:33:19,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,549 INFO L124 PetriNetUnfolderBase]: 655/1296 cut-off events. [2024-06-28 01:33:19,549 INFO L125 PetriNetUnfolderBase]: For 12503/12512 co-relation queries the response was YES. [2024-06-28 01:33:19,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 1296 events. 655/1296 cut-off events. For 12503/12512 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7688 event pairs, 134 based on Foata normal form. 7/1253 useless extension candidates. Maximal degree in co-relation 5612. Up to 957 conditions per place. [2024-06-28 01:33:19,558 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 103 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2024-06-28 01:33:19,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 139 transitions, 1252 flow [2024-06-28 01:33:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:33:19,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 01:33:19,559 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 872 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:33:19,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 139 transitions, 1252 flow [2024-06-28 01:33:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 139 transitions, 1189 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:19,576 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 892 flow [2024-06-28 01:33:19,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=892, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2024-06-28 01:33:19,577 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 01:33:19,577 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 892 flow [2024-06-28 01:33:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:19,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:19,578 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:19,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash -219714930, now seen corresponding path program 2 times [2024-06-28 01:33:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:19,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511107840] [2024-06-28 01:33:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:19,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:20,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:20,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511107840] [2024-06-28 01:33:20,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511107840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821329057] [2024-06-28 01:33:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:20,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:20,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:20,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:20,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:20,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:20,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:20,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:20,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:20,688 INFO L124 PetriNetUnfolderBase]: 770/1477 cut-off events. [2024-06-28 01:33:20,689 INFO L125 PetriNetUnfolderBase]: For 14524/14524 co-relation queries the response was YES. [2024-06-28 01:33:20,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 1477 events. 770/1477 cut-off events. For 14524/14524 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8793 event pairs, 172 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 6470. Up to 861 conditions per place. [2024-06-28 01:33:20,698 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 110 selfloop transitions, 35 changer transitions 0/153 dead transitions. [2024-06-28 01:33:20,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 153 transitions, 1458 flow [2024-06-28 01:33:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:33:20,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-28 01:33:20,699 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 892 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:33:20,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 153 transitions, 1458 flow [2024-06-28 01:33:20,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 153 transitions, 1400 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:20,720 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 977 flow [2024-06-28 01:33:20,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2024-06-28 01:33:20,721 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-28 01:33:20,721 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 977 flow [2024-06-28 01:33:20,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:20,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:20,722 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:20,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash -134872596, now seen corresponding path program 3 times [2024-06-28 01:33:20,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:20,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360839052] [2024-06-28 01:33:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:20,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360839052] [2024-06-28 01:33:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360839052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911356447] [2024-06-28 01:33:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:21,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:21,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:21,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 116 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:21,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:21,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:21,760 INFO L124 PetriNetUnfolderBase]: 792/1469 cut-off events. [2024-06-28 01:33:21,760 INFO L125 PetriNetUnfolderBase]: For 15730/15730 co-relation queries the response was YES. [2024-06-28 01:33:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1469 events. 792/1469 cut-off events. For 15730/15730 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8490 event pairs, 152 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 6753. Up to 879 conditions per place. [2024-06-28 01:33:21,769 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 39 changer transitions 0/154 dead transitions. [2024-06-28 01:33:21,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 154 transitions, 1511 flow [2024-06-28 01:33:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:33:21,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:33:21,770 INFO L175 Difference]: Start difference. First operand has 125 places, 116 transitions, 977 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:33:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 154 transitions, 1511 flow [2024-06-28 01:33:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 154 transitions, 1447 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:21,795 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 1032 flow [2024-06-28 01:33:21,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1032, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2024-06-28 01:33:21,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 01:33:21,796 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 1032 flow [2024-06-28 01:33:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:21,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:21,797 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:21,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash -125675826, now seen corresponding path program 4 times [2024-06-28 01:33:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111964971] [2024-06-28 01:33:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:22,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:22,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111964971] [2024-06-28 01:33:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111964971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:22,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503669963] [2024-06-28 01:33:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:22,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:22,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,740 INFO L124 PetriNetUnfolderBase]: 814/1515 cut-off events. [2024-06-28 01:33:22,740 INFO L125 PetriNetUnfolderBase]: For 16775/16775 co-relation queries the response was YES. [2024-06-28 01:33:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 1515 events. 814/1515 cut-off events. For 16775/16775 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8853 event pairs, 146 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 7117. Up to 897 conditions per place. [2024-06-28 01:33:22,748 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-28 01:33:22,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 156 transitions, 1574 flow [2024-06-28 01:33:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:33:22,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-28 01:33:22,749 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 1032 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:33:22,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 156 transitions, 1574 flow [2024-06-28 01:33:22,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 156 transitions, 1463 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:22,779 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 1050 flow [2024-06-28 01:33:22,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2024-06-28 01:33:22,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-28 01:33:22,781 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 1050 flow [2024-06-28 01:33:22,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:22,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:22,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:22,782 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:22,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1319970738, now seen corresponding path program 5 times [2024-06-28 01:33:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187728166] [2024-06-28 01:33:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:23,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187728166] [2024-06-28 01:33:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187728166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:23,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:23,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823605139] [2024-06-28 01:33:23,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:23,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:23,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:23,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:23,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:23,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:23,930 INFO L124 PetriNetUnfolderBase]: 810/1552 cut-off events. [2024-06-28 01:33:23,930 INFO L125 PetriNetUnfolderBase]: For 15981/15981 co-relation queries the response was YES. [2024-06-28 01:33:23,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7109 conditions, 1552 events. 810/1552 cut-off events. For 15981/15981 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9330 event pairs, 197 based on Foata normal form. 2/1500 useless extension candidates. Maximal degree in co-relation 7049. Up to 1253 conditions per place. [2024-06-28 01:33:23,937 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 128 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-28 01:33:23,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 151 transitions, 1458 flow [2024-06-28 01:33:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:33:23,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:33:23,951 INFO L175 Difference]: Start difference. First operand has 131 places, 120 transitions, 1050 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:33:23,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 151 transitions, 1458 flow [2024-06-28 01:33:23,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 151 transitions, 1321 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:23,976 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 948 flow [2024-06-28 01:33:23,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2024-06-28 01:33:23,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 01:33:23,977 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 948 flow [2024-06-28 01:33:23,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:23,978 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:23,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1319958834, now seen corresponding path program 1 times [2024-06-28 01:33:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679457441] [2024-06-28 01:33:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679457441] [2024-06-28 01:33:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679457441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030339775] [2024-06-28 01:33:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:24,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:24,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 120 transitions, 948 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:24,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:24,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,231 INFO L124 PetriNetUnfolderBase]: 811/1554 cut-off events. [2024-06-28 01:33:25,231 INFO L125 PetriNetUnfolderBase]: For 14576/14576 co-relation queries the response was YES. [2024-06-28 01:33:25,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 1554 events. 811/1554 cut-off events. For 14576/14576 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9391 event pairs, 197 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 6682. Up to 1245 conditions per place. [2024-06-28 01:33:25,241 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 133 selfloop transitions, 16 changer transitions 0/157 dead transitions. [2024-06-28 01:33:25,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 157 transitions, 1394 flow [2024-06-28 01:33:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:33:25,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:33:25,242 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 948 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:33:25,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 157 transitions, 1394 flow [2024-06-28 01:33:25,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 157 transitions, 1359 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:25,266 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 963 flow [2024-06-28 01:33:25,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=963, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-28 01:33:25,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-28 01:33:25,267 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 963 flow [2024-06-28 01:33:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:25,268 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:25,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash 342879647, now seen corresponding path program 1 times [2024-06-28 01:33:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395632097] [2024-06-28 01:33:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395632097] [2024-06-28 01:33:25,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395632097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:25,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:25,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:33:25,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77714596] [2024-06-28 01:33:25,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:25,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:33:25,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:25,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:33:25,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:33:25,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-06-28 01:33:25,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 963 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:25,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-06-28 01:33:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,454 INFO L124 PetriNetUnfolderBase]: 363/846 cut-off events. [2024-06-28 01:33:25,454 INFO L125 PetriNetUnfolderBase]: For 11426/11442 co-relation queries the response was YES. [2024-06-28 01:33:25,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 846 events. 363/846 cut-off events. For 11426/11442 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4972 event pairs, 64 based on Foata normal form. 47/815 useless extension candidates. Maximal degree in co-relation 3719. Up to 250 conditions per place. [2024-06-28 01:33:25,457 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 50 selfloop transitions, 27 changer transitions 0/121 dead transitions. [2024-06-28 01:33:25,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 121 transitions, 1111 flow [2024-06-28 01:33:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:33:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:33:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-28 01:33:25,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-06-28 01:33:25,458 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 963 flow. Second operand 4 states and 104 transitions. [2024-06-28 01:33:25,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 121 transitions, 1111 flow [2024-06-28 01:33:25,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 1015 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 01:33:25,473 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 893 flow [2024-06-28 01:33:25,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=893, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-28 01:33:25,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 01:33:25,474 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 893 flow [2024-06-28 01:33:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:25,474 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:25,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1222190720, now seen corresponding path program 1 times [2024-06-28 01:33:25,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163489523] [2024-06-28 01:33:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163489523] [2024-06-28 01:33:26,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163489523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:26,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062117830] [2024-06-28 01:33:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:26,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:26,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 893 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:26,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:26,484 INFO L124 PetriNetUnfolderBase]: 546/1067 cut-off events. [2024-06-28 01:33:26,484 INFO L125 PetriNetUnfolderBase]: For 13164/13164 co-relation queries the response was YES. [2024-06-28 01:33:26,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4846 conditions, 1067 events. 546/1067 cut-off events. For 13164/13164 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5563 event pairs, 142 based on Foata normal form. 1/1010 useless extension candidates. Maximal degree in co-relation 4788. Up to 870 conditions per place. [2024-06-28 01:33:26,488 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 101 selfloop transitions, 24 changer transitions 0/134 dead transitions. [2024-06-28 01:33:26,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1259 flow [2024-06-28 01:33:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:33:26,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:33:26,489 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 893 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:33:26,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1259 flow [2024-06-28 01:33:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 1255 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:26,509 INFO L231 Difference]: Finished difference. Result has 135 places, 113 transitions, 1005 flow [2024-06-28 01:33:26,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1005, PETRI_PLACES=135, PETRI_TRANSITIONS=113} [2024-06-28 01:33:26,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-28 01:33:26,510 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 113 transitions, 1005 flow [2024-06-28 01:33:26,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:26,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:26,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:33:26,510 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:26,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:26,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1871740726, now seen corresponding path program 1 times [2024-06-28 01:33:26,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726077884] [2024-06-28 01:33:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:26,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:27,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:27,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726077884] [2024-06-28 01:33:27,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726077884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:27,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721970789] [2024-06-28 01:33:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:27,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:27,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 113 transitions, 1005 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:27,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:27,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,480 INFO L124 PetriNetUnfolderBase]: 563/1084 cut-off events. [2024-06-28 01:33:27,480 INFO L125 PetriNetUnfolderBase]: For 14428/14428 co-relation queries the response was YES. [2024-06-28 01:33:27,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 1084 events. 563/1084 cut-off events. For 14428/14428 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5649 event pairs, 61 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5038. Up to 826 conditions per place. [2024-06-28 01:33:27,485 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2024-06-28 01:33:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 1383 flow [2024-06-28 01:33:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:33:27,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:33:27,486 INFO L175 Difference]: Start difference. First operand has 135 places, 113 transitions, 1005 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:33:27,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 1383 flow [2024-06-28 01:33:27,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 1307 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:27,513 INFO L231 Difference]: Finished difference. Result has 136 places, 114 transitions, 987 flow [2024-06-28 01:33:27,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=987, PETRI_PLACES=136, PETRI_TRANSITIONS=114} [2024-06-28 01:33:27,513 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 01:33:27,513 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 114 transitions, 987 flow [2024-06-28 01:33:27,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:27,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:27,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:33:27,514 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:27,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1873643506, now seen corresponding path program 2 times [2024-06-28 01:33:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:27,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036541720] [2024-06-28 01:33:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:27,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036541720] [2024-06-28 01:33:28,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036541720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:28,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:28,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884193462] [2024-06-28 01:33:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:28,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:28,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:28,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 114 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:28,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:28,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:28,602 INFO L124 PetriNetUnfolderBase]: 600/1181 cut-off events. [2024-06-28 01:33:28,602 INFO L125 PetriNetUnfolderBase]: For 16254/16254 co-relation queries the response was YES. [2024-06-28 01:33:28,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5535 conditions, 1181 events. 600/1181 cut-off events. For 16254/16254 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6397 event pairs, 149 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 5472. Up to 881 conditions per place. [2024-06-28 01:33:28,608 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 111 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-28 01:33:28,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 144 transitions, 1439 flow [2024-06-28 01:33:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:33:28,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:33:28,611 INFO L175 Difference]: Start difference. First operand has 136 places, 114 transitions, 987 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:33:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 144 transitions, 1439 flow [2024-06-28 01:33:28,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 1393 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:28,640 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1023 flow [2024-06-28 01:33:28,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-28 01:33:28,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 01:33:28,640 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1023 flow [2024-06-28 01:33:28,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:28,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:28,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:33:28,641 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:28,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1873648156, now seen corresponding path program 3 times [2024-06-28 01:33:28,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:28,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424190603] [2024-06-28 01:33:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424190603] [2024-06-28 01:33:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424190603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:29,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:29,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368976621] [2024-06-28 01:33:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:29,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:29,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:29,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:29,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:29,652 INFO L124 PetriNetUnfolderBase]: 597/1178 cut-off events. [2024-06-28 01:33:29,652 INFO L125 PetriNetUnfolderBase]: For 16238/16238 co-relation queries the response was YES. [2024-06-28 01:33:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5469 conditions, 1178 events. 597/1178 cut-off events. For 16238/16238 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6399 event pairs, 161 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 5405. Up to 935 conditions per place. [2024-06-28 01:33:29,658 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 106 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-06-28 01:33:29,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 1357 flow [2024-06-28 01:33:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:33:29,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:33:29,659 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1023 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:33:29,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 1357 flow [2024-06-28 01:33:29,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 139 transitions, 1304 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:29,688 INFO L231 Difference]: Finished difference. Result has 142 places, 116 transitions, 1023 flow [2024-06-28 01:33:29,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=142, PETRI_TRANSITIONS=116} [2024-06-28 01:33:29,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 01:33:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 116 transitions, 1023 flow [2024-06-28 01:33:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:29,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:33:29,689 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:29,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash -89982328, now seen corresponding path program 4 times [2024-06-28 01:33:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108353019] [2024-06-28 01:33:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108353019] [2024-06-28 01:33:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108353019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:30,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:30,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860641431] [2024-06-28 01:33:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:30,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:30,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:30,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 116 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:30,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:30,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:30,705 INFO L124 PetriNetUnfolderBase]: 620/1229 cut-off events. [2024-06-28 01:33:30,705 INFO L125 PetriNetUnfolderBase]: For 16733/16733 co-relation queries the response was YES. [2024-06-28 01:33:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5635 conditions, 1229 events. 620/1229 cut-off events. For 16733/16733 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6790 event pairs, 170 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 5569. Up to 995 conditions per place. [2024-06-28 01:33:30,711 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 114 selfloop transitions, 19 changer transitions 0/142 dead transitions. [2024-06-28 01:33:30,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1406 flow [2024-06-28 01:33:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:33:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:33:30,713 INFO L175 Difference]: Start difference. First operand has 142 places, 116 transitions, 1023 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:33:30,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1406 flow [2024-06-28 01:33:30,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 1355 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:30,746 INFO L231 Difference]: Finished difference. Result has 144 places, 121 transitions, 1072 flow [2024-06-28 01:33:30,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=144, PETRI_TRANSITIONS=121} [2024-06-28 01:33:30,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 01:33:30,746 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 121 transitions, 1072 flow [2024-06-28 01:33:30,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:30,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:30,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:33:30,747 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:30,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -89986978, now seen corresponding path program 5 times [2024-06-28 01:33:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547371714] [2024-06-28 01:33:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547371714] [2024-06-28 01:33:31,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547371714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068167620] [2024-06-28 01:33:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:31,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 121 transitions, 1072 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:31,859 INFO L124 PetriNetUnfolderBase]: 657/1306 cut-off events. [2024-06-28 01:33:31,859 INFO L125 PetriNetUnfolderBase]: For 19851/19851 co-relation queries the response was YES. [2024-06-28 01:33:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 1306 events. 657/1306 cut-off events. For 19851/19851 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7357 event pairs, 168 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 6120. Up to 986 conditions per place. [2024-06-28 01:33:31,866 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 119 selfloop transitions, 21 changer transitions 0/149 dead transitions. [2024-06-28 01:33:31,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 1542 flow [2024-06-28 01:33:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:33:31,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:33:31,869 INFO L175 Difference]: Start difference. First operand has 144 places, 121 transitions, 1072 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:33:31,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 1542 flow [2024-06-28 01:33:31,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 149 transitions, 1500 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:31,910 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 1114 flow [2024-06-28 01:33:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1114, PETRI_PLACES=149, PETRI_TRANSITIONS=123} [2024-06-28 01:33:31,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-28 01:33:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 1114 flow [2024-06-28 01:33:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:33:31,910 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1274427390, now seen corresponding path program 6 times [2024-06-28 01:33:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616600787] [2024-06-28 01:33:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:32,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616600787] [2024-06-28 01:33:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616600787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:32,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671557642] [2024-06-28 01:33:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:32,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:32,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:32,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 123 transitions, 1114 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:32,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:32,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:33,011 INFO L124 PetriNetUnfolderBase]: 654/1309 cut-off events. [2024-06-28 01:33:33,011 INFO L125 PetriNetUnfolderBase]: For 19193/19193 co-relation queries the response was YES. [2024-06-28 01:33:33,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6051 conditions, 1309 events. 654/1309 cut-off events. For 19193/19193 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7397 event pairs, 180 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 5982. Up to 1057 conditions per place. [2024-06-28 01:33:33,018 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 116 selfloop transitions, 19 changer transitions 0/144 dead transitions. [2024-06-28 01:33:33,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 144 transitions, 1452 flow [2024-06-28 01:33:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:33:33,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:33:33,019 INFO L175 Difference]: Start difference. First operand has 149 places, 123 transitions, 1114 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:33:33,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 144 transitions, 1452 flow [2024-06-28 01:33:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 1399 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:33,063 INFO L231 Difference]: Finished difference. Result has 153 places, 123 transitions, 1103 flow [2024-06-28 01:33:33,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1103, PETRI_PLACES=153, PETRI_TRANSITIONS=123} [2024-06-28 01:33:33,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-28 01:33:33,063 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 123 transitions, 1103 flow [2024-06-28 01:33:33,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:33,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:33,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:33:33,064 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:33,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1961413620, now seen corresponding path program 2 times [2024-06-28 01:33:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335180739] [2024-06-28 01:33:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335180739] [2024-06-28 01:33:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335180739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:33,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:33,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135888919] [2024-06-28 01:33:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:33,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:33,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:33,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 123 transitions, 1103 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:34,132 INFO L124 PetriNetUnfolderBase]: 652/1306 cut-off events. [2024-06-28 01:33:34,132 INFO L125 PetriNetUnfolderBase]: For 17625/17625 co-relation queries the response was YES. [2024-06-28 01:33:34,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5864 conditions, 1306 events. 652/1306 cut-off events. For 17625/17625 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7359 event pairs, 179 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 5793. Up to 1039 conditions per place. [2024-06-28 01:33:34,138 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 106 selfloop transitions, 31 changer transitions 0/146 dead transitions. [2024-06-28 01:33:34,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 146 transitions, 1487 flow [2024-06-28 01:33:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:33:34,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:33:34,139 INFO L175 Difference]: Start difference. First operand has 153 places, 123 transitions, 1103 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:33:34,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 146 transitions, 1487 flow [2024-06-28 01:33:34,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 146 transitions, 1433 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:34,176 INFO L231 Difference]: Finished difference. Result has 154 places, 125 transitions, 1167 flow [2024-06-28 01:33:34,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1167, PETRI_PLACES=154, PETRI_TRANSITIONS=125} [2024-06-28 01:33:34,176 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 01:33:34,176 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 125 transitions, 1167 flow [2024-06-28 01:33:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:34,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:33:34,177 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:34,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 627849820, now seen corresponding path program 1 times [2024-06-28 01:33:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:34,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134908249] [2024-06-28 01:33:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:34,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134908249] [2024-06-28 01:33:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134908249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:34,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:34,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:34,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436126005] [2024-06-28 01:33:34,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:34,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:34,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:34,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 125 transitions, 1167 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:34,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:34,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:35,311 INFO L124 PetriNetUnfolderBase]: 665/1325 cut-off events. [2024-06-28 01:33:35,311 INFO L125 PetriNetUnfolderBase]: For 19397/19397 co-relation queries the response was YES. [2024-06-28 01:33:35,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 1325 events. 665/1325 cut-off events. For 19397/19397 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7474 event pairs, 178 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 5991. Up to 1055 conditions per place. [2024-06-28 01:33:35,318 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 116 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-28 01:33:35,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 149 transitions, 1575 flow [2024-06-28 01:33:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:33:35,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:33:35,319 INFO L175 Difference]: Start difference. First operand has 154 places, 125 transitions, 1167 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:33:35,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 149 transitions, 1575 flow [2024-06-28 01:33:35,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1479 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:35,356 INFO L231 Difference]: Finished difference. Result has 156 places, 128 transitions, 1183 flow [2024-06-28 01:33:35,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=156, PETRI_TRANSITIONS=128} [2024-06-28 01:33:35,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-28 01:33:35,357 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 128 transitions, 1183 flow [2024-06-28 01:33:35,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:33:35,357 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 745834166, now seen corresponding path program 7 times [2024-06-28 01:33:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35704057] [2024-06-28 01:33:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:36,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:36,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35704057] [2024-06-28 01:33:36,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35704057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:36,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:36,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480070413] [2024-06-28 01:33:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:36,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:36,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:36,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 128 transitions, 1183 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:36,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:36,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:36,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:36,454 INFO L124 PetriNetUnfolderBase]: 688/1380 cut-off events. [2024-06-28 01:33:36,455 INFO L125 PetriNetUnfolderBase]: For 19886/19886 co-relation queries the response was YES. [2024-06-28 01:33:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 1380 events. 688/1380 cut-off events. For 19886/19886 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7945 event pairs, 187 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 6237. Up to 1068 conditions per place. [2024-06-28 01:33:36,462 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 114 selfloop transitions, 30 changer transitions 0/153 dead transitions. [2024-06-28 01:33:36,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1595 flow [2024-06-28 01:33:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:33:36,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:33:36,463 INFO L175 Difference]: Start difference. First operand has 156 places, 128 transitions, 1183 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:33:36,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1595 flow [2024-06-28 01:33:36,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 153 transitions, 1515 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:36,511 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1239 flow [2024-06-28 01:33:36,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-28 01:33:36,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 01:33:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1239 flow [2024-06-28 01:33:36,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:36,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:36,513 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:36,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash 745656536, now seen corresponding path program 8 times [2024-06-28 01:33:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80280980] [2024-06-28 01:33:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80280980] [2024-06-28 01:33:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80280980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:37,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762114850] [2024-06-28 01:33:37,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:37,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:37,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:37,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,593 INFO L124 PetriNetUnfolderBase]: 709/1425 cut-off events. [2024-06-28 01:33:37,593 INFO L125 PetriNetUnfolderBase]: For 21637/21637 co-relation queries the response was YES. [2024-06-28 01:33:37,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1425 events. 709/1425 cut-off events. For 21637/21637 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8279 event pairs, 180 based on Foata normal form. 2/1346 useless extension candidates. Maximal degree in co-relation 6572. Up to 1027 conditions per place. [2024-06-28 01:33:37,601 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 119 selfloop transitions, 32 changer transitions 0/160 dead transitions. [2024-06-28 01:33:37,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 1741 flow [2024-06-28 01:33:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:33:37,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:33:37,602 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1239 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:33:37,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 1741 flow [2024-06-28 01:33:37,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 1674 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:37,654 INFO L231 Difference]: Finished difference. Result has 163 places, 136 transitions, 1286 flow [2024-06-28 01:33:37,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=163, PETRI_TRANSITIONS=136} [2024-06-28 01:33:37,654 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-28 01:33:37,654 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 136 transitions, 1286 flow [2024-06-28 01:33:37,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:37,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:37,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:37,655 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:37,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash 752090276, now seen corresponding path program 9 times [2024-06-28 01:33:37,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:37,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287125620] [2024-06-28 01:33:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287125620] [2024-06-28 01:33:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287125620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199422422] [2024-06-28 01:33:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:38,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:38,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 136 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:38,757 INFO L124 PetriNetUnfolderBase]: 726/1476 cut-off events. [2024-06-28 01:33:38,757 INFO L125 PetriNetUnfolderBase]: For 22786/22786 co-relation queries the response was YES. [2024-06-28 01:33:38,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 1476 events. 726/1476 cut-off events. For 22786/22786 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8721 event pairs, 199 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 6725. Up to 1138 conditions per place. [2024-06-28 01:33:38,765 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 118 selfloop transitions, 30 changer transitions 0/157 dead transitions. [2024-06-28 01:33:38,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 1677 flow [2024-06-28 01:33:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:33:38,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-28 01:33:38,766 INFO L175 Difference]: Start difference. First operand has 163 places, 136 transitions, 1286 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:33:38,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 1677 flow [2024-06-28 01:33:38,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 1607 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:38,822 INFO L231 Difference]: Finished difference. Result has 168 places, 138 transitions, 1323 flow [2024-06-28 01:33:38,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1323, PETRI_PLACES=168, PETRI_TRANSITIONS=138} [2024-06-28 01:33:38,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 01:33:38,822 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 138 transitions, 1323 flow [2024-06-28 01:33:38,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:38,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:38,825 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:38,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash 113671494, now seen corresponding path program 10 times [2024-06-28 01:33:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173863438] [2024-06-28 01:33:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:39,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173863438] [2024-06-28 01:33:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173863438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172095282] [2024-06-28 01:33:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:39,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:39,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:39,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 138 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:39,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:39,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:39,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:39,874 INFO L124 PetriNetUnfolderBase]: 723/1468 cut-off events. [2024-06-28 01:33:39,874 INFO L125 PetriNetUnfolderBase]: For 20646/20646 co-relation queries the response was YES. [2024-06-28 01:33:39,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6603 conditions, 1468 events. 723/1468 cut-off events. For 20646/20646 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8643 event pairs, 195 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 6525. Up to 1133 conditions per place. [2024-06-28 01:33:39,882 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 116 selfloop transitions, 32 changer transitions 0/157 dead transitions. [2024-06-28 01:33:39,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1681 flow [2024-06-28 01:33:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:33:39,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:33:39,884 INFO L175 Difference]: Start difference. First operand has 168 places, 138 transitions, 1323 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:33:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1681 flow [2024-06-28 01:33:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1597 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:39,943 INFO L231 Difference]: Finished difference. Result has 171 places, 138 transitions, 1307 flow [2024-06-28 01:33:39,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=171, PETRI_TRANSITIONS=138} [2024-06-28 01:33:39,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 01:33:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 138 transitions, 1307 flow [2024-06-28 01:33:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:39,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:39,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:39,944 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:39,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash 752336540, now seen corresponding path program 2 times [2024-06-28 01:33:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719732107] [2024-06-28 01:33:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:39,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:40,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719732107] [2024-06-28 01:33:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719732107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:40,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085953333] [2024-06-28 01:33:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:40,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:40,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 138 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:40,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:40,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:41,233 INFO L124 PetriNetUnfolderBase]: 736/1490 cut-off events. [2024-06-28 01:33:41,233 INFO L125 PetriNetUnfolderBase]: For 20970/20970 co-relation queries the response was YES. [2024-06-28 01:33:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 1490 events. 736/1490 cut-off events. For 20970/20970 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8790 event pairs, 198 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 6538. Up to 1036 conditions per place. [2024-06-28 01:33:41,241 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 110 selfloop transitions, 43 changer transitions 0/162 dead transitions. [2024-06-28 01:33:41,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 162 transitions, 1763 flow [2024-06-28 01:33:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:33:41,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:33:41,242 INFO L175 Difference]: Start difference. First operand has 171 places, 138 transitions, 1307 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:33:41,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 162 transitions, 1763 flow [2024-06-28 01:33:41,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1669 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:41,296 INFO L231 Difference]: Finished difference. Result has 171 places, 141 transitions, 1367 flow [2024-06-28 01:33:41,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1367, PETRI_PLACES=171, PETRI_TRANSITIONS=141} [2024-06-28 01:33:41,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 01:33:41,296 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 141 transitions, 1367 flow [2024-06-28 01:33:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:41,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:33:41,297 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:41,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 113917758, now seen corresponding path program 3 times [2024-06-28 01:33:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:41,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414485488] [2024-06-28 01:33:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:42,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414485488] [2024-06-28 01:33:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414485488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666845427] [2024-06-28 01:33:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:42,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:42,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:42,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:42,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 141 transitions, 1367 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:42,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:42,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,599 INFO L124 PetriNetUnfolderBase]: 749/1509 cut-off events. [2024-06-28 01:33:42,599 INFO L125 PetriNetUnfolderBase]: For 22571/22571 co-relation queries the response was YES. [2024-06-28 01:33:42,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 1509 events. 749/1509 cut-off events. For 22571/22571 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8869 event pairs, 195 based on Foata normal form. 2/1416 useless extension candidates. Maximal degree in co-relation 6782. Up to 1055 conditions per place. [2024-06-28 01:33:42,607 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 112 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-28 01:33:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 165 transitions, 1843 flow [2024-06-28 01:33:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:33:42,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:33:42,608 INFO L175 Difference]: Start difference. First operand has 171 places, 141 transitions, 1367 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:33:42,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 165 transitions, 1843 flow [2024-06-28 01:33:42,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 1719 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:42,668 INFO L231 Difference]: Finished difference. Result has 173 places, 144 transitions, 1405 flow [2024-06-28 01:33:42,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1405, PETRI_PLACES=173, PETRI_TRANSITIONS=144} [2024-06-28 01:33:42,668 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-28 01:33:42,668 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 144 transitions, 1405 flow [2024-06-28 01:33:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:42,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:42,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:33:42,669 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:42,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 399017628, now seen corresponding path program 4 times [2024-06-28 01:33:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203621189] [2024-06-28 01:33:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:43,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:43,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203621189] [2024-06-28 01:33:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203621189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832848344] [2024-06-28 01:33:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:43,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:43,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 144 transitions, 1405 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:43,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:43,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:43,915 INFO L124 PetriNetUnfolderBase]: 762/1528 cut-off events. [2024-06-28 01:33:43,915 INFO L125 PetriNetUnfolderBase]: For 23937/23937 co-relation queries the response was YES. [2024-06-28 01:33:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7057 conditions, 1528 events. 762/1528 cut-off events. For 23937/23937 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9000 event pairs, 195 based on Foata normal form. 2/1432 useless extension candidates. Maximal degree in co-relation 6978. Up to 1074 conditions per place. [2024-06-28 01:33:43,924 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 108 selfloop transitions, 50 changer transitions 0/167 dead transitions. [2024-06-28 01:33:43,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 167 transitions, 1885 flow [2024-06-28 01:33:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:33:43,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:33:43,925 INFO L175 Difference]: Start difference. First operand has 173 places, 144 transitions, 1405 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:33:43,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 167 transitions, 1885 flow [2024-06-28 01:33:43,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 167 transitions, 1753 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:43,985 INFO L231 Difference]: Finished difference. Result has 175 places, 147 transitions, 1453 flow [2024-06-28 01:33:43,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1453, PETRI_PLACES=175, PETRI_TRANSITIONS=147} [2024-06-28 01:33:43,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 01:33:43,986 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 147 transitions, 1453 flow [2024-06-28 01:33:43,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:43,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:33:43,986 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:43,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 409136958, now seen corresponding path program 5 times [2024-06-28 01:33:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522400018] [2024-06-28 01:33:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:44,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522400018] [2024-06-28 01:33:44,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522400018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:44,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147800333] [2024-06-28 01:33:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:44,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:44,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 147 transitions, 1453 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:44,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:45,319 INFO L124 PetriNetUnfolderBase]: 775/1545 cut-off events. [2024-06-28 01:33:45,319 INFO L125 PetriNetUnfolderBase]: For 25321/25321 co-relation queries the response was YES. [2024-06-28 01:33:45,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1545 events. 775/1545 cut-off events. For 25321/25321 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9048 event pairs, 201 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 7187. Up to 1277 conditions per place. [2024-06-28 01:33:45,328 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 141 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-28 01:33:45,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 167 transitions, 1907 flow [2024-06-28 01:33:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:33:45,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:33:45,329 INFO L175 Difference]: Start difference. First operand has 175 places, 147 transitions, 1453 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:33:45,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 167 transitions, 1907 flow [2024-06-28 01:33:45,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 167 transitions, 1757 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:45,395 INFO L231 Difference]: Finished difference. Result has 177 places, 150 transitions, 1423 flow [2024-06-28 01:33:45,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1423, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2024-06-28 01:33:45,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-28 01:33:45,396 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 1423 flow [2024-06-28 01:33:45,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:45,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:45,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:45,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:33:45,396 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:45,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash 982323680, now seen corresponding path program 6 times [2024-06-28 01:33:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:45,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806078666] [2024-06-28 01:33:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:46,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806078666] [2024-06-28 01:33:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806078666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:46,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:46,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378687342] [2024-06-28 01:33:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:46,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:46,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:46,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:46,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:46,719 INFO L124 PetriNetUnfolderBase]: 773/1539 cut-off events. [2024-06-28 01:33:46,719 INFO L125 PetriNetUnfolderBase]: For 23338/23338 co-relation queries the response was YES. [2024-06-28 01:33:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1539 events. 773/1539 cut-off events. For 23338/23338 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9006 event pairs, 198 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 6970. Up to 1264 conditions per place. [2024-06-28 01:33:46,729 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 141 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2024-06-28 01:33:46,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 171 transitions, 1855 flow [2024-06-28 01:33:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:33:46,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:33:46,730 INFO L175 Difference]: Start difference. First operand has 177 places, 150 transitions, 1423 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:33:46,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 171 transitions, 1855 flow [2024-06-28 01:33:46,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 1765 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:46,796 INFO L231 Difference]: Finished difference. Result has 180 places, 152 transitions, 1424 flow [2024-06-28 01:33:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1424, PETRI_PLACES=180, PETRI_TRANSITIONS=152} [2024-06-28 01:33:46,797 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 01:33:46,797 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 152 transitions, 1424 flow [2024-06-28 01:33:46,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:46,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:33:46,798 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:46,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1253305270, now seen corresponding path program 1 times [2024-06-28 01:33:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050887307] [2024-06-28 01:33:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:47,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:47,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050887307] [2024-06-28 01:33:47,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050887307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641177537] [2024-06-28 01:33:47,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:47,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:47,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:47,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:47,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:47,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 152 transitions, 1424 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:47,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:47,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:47,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:47,957 INFO L124 PetriNetUnfolderBase]: 790/1557 cut-off events. [2024-06-28 01:33:47,957 INFO L125 PetriNetUnfolderBase]: For 24554/24554 co-relation queries the response was YES. [2024-06-28 01:33:47,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7123 conditions, 1557 events. 790/1557 cut-off events. For 24554/24554 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9086 event pairs, 108 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 7041. Up to 1184 conditions per place. [2024-06-28 01:33:47,966 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 159 selfloop transitions, 20 changer transitions 0/188 dead transitions. [2024-06-28 01:33:47,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 188 transitions, 1906 flow [2024-06-28 01:33:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:33:47,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:33:47,968 INFO L175 Difference]: Start difference. First operand has 180 places, 152 transitions, 1424 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:33:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 188 transitions, 1906 flow [2024-06-28 01:33:48,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 188 transitions, 1847 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:48,041 INFO L231 Difference]: Finished difference. Result has 181 places, 153 transitions, 1419 flow [2024-06-28 01:33:48,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1419, PETRI_PLACES=181, PETRI_TRANSITIONS=153} [2024-06-28 01:33:48,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 01:33:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 153 transitions, 1419 flow [2024-06-28 01:33:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:33:48,043 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:48,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2091856784, now seen corresponding path program 2 times [2024-06-28 01:33:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591509607] [2024-06-28 01:33:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591509607] [2024-06-28 01:33:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591509607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133091059] [2024-06-28 01:33:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:48,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:48,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 153 transitions, 1419 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:48,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:49,225 INFO L124 PetriNetUnfolderBase]: 827/1645 cut-off events. [2024-06-28 01:33:49,225 INFO L125 PetriNetUnfolderBase]: For 27852/27852 co-relation queries the response was YES. [2024-06-28 01:33:49,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 1645 events. 827/1645 cut-off events. For 27852/27852 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9817 event pairs, 196 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 7475. Up to 1190 conditions per place. [2024-06-28 01:33:49,235 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 153 selfloop transitions, 27 changer transitions 0/189 dead transitions. [2024-06-28 01:33:49,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 189 transitions, 2005 flow [2024-06-28 01:33:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:33:49,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:33:49,236 INFO L175 Difference]: Start difference. First operand has 181 places, 153 transitions, 1419 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:33:49,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 189 transitions, 2005 flow [2024-06-28 01:33:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 189 transitions, 1961 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:49,340 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1455 flow [2024-06-28 01:33:49,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1455, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-06-28 01:33:49,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-28 01:33:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1455 flow [2024-06-28 01:33:49,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:49,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:49,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:33:49,341 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:49,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1727878984, now seen corresponding path program 3 times [2024-06-28 01:33:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545490345] [2024-06-28 01:33:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545490345] [2024-06-28 01:33:50,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545490345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:50,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626241988] [2024-06-28 01:33:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:50,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:50,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:50,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1455 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:50,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:50,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,499 INFO L124 PetriNetUnfolderBase]: 844/1693 cut-off events. [2024-06-28 01:33:50,499 INFO L125 PetriNetUnfolderBase]: For 29341/29341 co-relation queries the response was YES. [2024-06-28 01:33:50,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1693 events. 844/1693 cut-off events. For 29341/29341 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10238 event pairs, 212 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 7686. Up to 1291 conditions per place. [2024-06-28 01:33:50,509 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 149 selfloop transitions, 28 changer transitions 0/186 dead transitions. [2024-06-28 01:33:50,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 2015 flow [2024-06-28 01:33:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:33:50,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:33:50,510 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1455 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:33:50,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 2015 flow [2024-06-28 01:33:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 1970 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:50,598 INFO L231 Difference]: Finished difference. Result has 187 places, 156 transitions, 1482 flow [2024-06-28 01:33:50,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1482, PETRI_PLACES=187, PETRI_TRANSITIONS=156} [2024-06-28 01:33:50,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 01:33:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 156 transitions, 1482 flow [2024-06-28 01:33:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:50,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:50,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:33:50,599 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:50,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2097570704, now seen corresponding path program 4 times [2024-06-28 01:33:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498339622] [2024-06-28 01:33:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:50,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:51,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498339622] [2024-06-28 01:33:51,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498339622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591192630] [2024-06-28 01:33:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:51,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:51,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 156 transitions, 1482 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:51,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:51,860 INFO L124 PetriNetUnfolderBase]: 841/1690 cut-off events. [2024-06-28 01:33:51,860 INFO L125 PetriNetUnfolderBase]: For 27658/27658 co-relation queries the response was YES. [2024-06-28 01:33:51,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7691 conditions, 1690 events. 841/1690 cut-off events. For 27658/27658 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10230 event pairs, 224 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 7605. Up to 1345 conditions per place. [2024-06-28 01:33:51,871 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 144 selfloop transitions, 28 changer transitions 0/181 dead transitions. [2024-06-28 01:33:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 181 transitions, 1906 flow [2024-06-28 01:33:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:33:51,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:33:51,872 INFO L175 Difference]: Start difference. First operand has 187 places, 156 transitions, 1482 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:33:51,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 181 transitions, 1906 flow [2024-06-28 01:33:51,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 181 transitions, 1837 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:51,948 INFO L231 Difference]: Finished difference. Result has 189 places, 156 transitions, 1474 flow [2024-06-28 01:33:51,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1474, PETRI_PLACES=189, PETRI_TRANSITIONS=156} [2024-06-28 01:33:51,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 01:33:51,949 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 156 transitions, 1474 flow [2024-06-28 01:33:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:51,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:33:51,950 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:51,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1311524628, now seen corresponding path program 5 times [2024-06-28 01:33:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277681846] [2024-06-28 01:33:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:52,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:52,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277681846] [2024-06-28 01:33:52,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277681846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:52,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:52,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:52,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332303686] [2024-06-28 01:33:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:52,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:52,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 156 transitions, 1474 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:52,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:52,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:52,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:53,252 INFO L124 PetriNetUnfolderBase]: 864/1738 cut-off events. [2024-06-28 01:33:53,252 INFO L125 PetriNetUnfolderBase]: For 28346/28346 co-relation queries the response was YES. [2024-06-28 01:33:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7817 conditions, 1738 events. 864/1738 cut-off events. For 28346/28346 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10627 event pairs, 233 based on Foata normal form. 2/1631 useless extension candidates. Maximal degree in co-relation 7730. Up to 1397 conditions per place. [2024-06-28 01:33:53,262 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 152 selfloop transitions, 23 changer transitions 0/184 dead transitions. [2024-06-28 01:33:53,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 184 transitions, 1954 flow [2024-06-28 01:33:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:33:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:33:53,263 INFO L175 Difference]: Start difference. First operand has 189 places, 156 transitions, 1474 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:33:53,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 184 transitions, 1954 flow [2024-06-28 01:33:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 184 transitions, 1895 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:53,354 INFO L231 Difference]: Finished difference. Result has 191 places, 161 transitions, 1531 flow [2024-06-28 01:33:53,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1531, PETRI_PLACES=191, PETRI_TRANSITIONS=161} [2024-06-28 01:33:53,354 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 01:33:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 161 transitions, 1531 flow [2024-06-28 01:33:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:53,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:53,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:33:53,355 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:53,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2081902518, now seen corresponding path program 6 times [2024-06-28 01:33:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073589825] [2024-06-28 01:33:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073589825] [2024-06-28 01:33:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073589825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:54,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091388288] [2024-06-28 01:33:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:54,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:54,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:54,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:54,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 161 transitions, 1531 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:54,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:54,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:54,681 INFO L124 PetriNetUnfolderBase]: 881/1770 cut-off events. [2024-06-28 01:33:54,681 INFO L125 PetriNetUnfolderBase]: For 29865/29865 co-relation queries the response was YES. [2024-06-28 01:33:54,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 1770 events. 881/1770 cut-off events. For 29865/29865 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10895 event pairs, 227 based on Foata normal form. 2/1663 useless extension candidates. Maximal degree in co-relation 7951. Up to 1376 conditions per place. [2024-06-28 01:33:54,692 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 156 selfloop transitions, 24 changer transitions 0/189 dead transitions. [2024-06-28 01:33:54,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 189 transitions, 1993 flow [2024-06-28 01:33:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:33:54,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:33:54,693 INFO L175 Difference]: Start difference. First operand has 191 places, 161 transitions, 1531 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:33:54,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 189 transitions, 1993 flow [2024-06-28 01:33:54,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 189 transitions, 1938 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:54,784 INFO L231 Difference]: Finished difference. Result has 196 places, 162 transitions, 1544 flow [2024-06-28 01:33:54,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1544, PETRI_PLACES=196, PETRI_TRANSITIONS=162} [2024-06-28 01:33:54,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-28 01:33:54,785 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 162 transitions, 1544 flow [2024-06-28 01:33:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:54,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:33:54,785 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:54,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1514661628, now seen corresponding path program 7 times [2024-06-28 01:33:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023389556] [2024-06-28 01:33:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:55,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023389556] [2024-06-28 01:33:55,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023389556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:55,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:55,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:55,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529721930] [2024-06-28 01:33:55,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:55,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:55,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:55,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 162 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:55,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:55,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:56,090 INFO L124 PetriNetUnfolderBase]: 904/1829 cut-off events. [2024-06-28 01:33:56,090 INFO L125 PetriNetUnfolderBase]: For 30738/30738 co-relation queries the response was YES. [2024-06-28 01:33:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8241 conditions, 1829 events. 904/1829 cut-off events. For 30738/30738 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11392 event pairs, 249 based on Foata normal form. 2/1716 useless extension candidates. Maximal degree in co-relation 8151. Up to 1466 conditions per place. [2024-06-28 01:33:56,104 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 154 selfloop transitions, 25 changer transitions 0/188 dead transitions. [2024-06-28 01:33:56,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 188 transitions, 2015 flow [2024-06-28 01:33:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:33:56,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:33:56,105 INFO L175 Difference]: Start difference. First operand has 196 places, 162 transitions, 1544 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:33:56,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 188 transitions, 2015 flow [2024-06-28 01:33:56,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 188 transitions, 1953 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:56,188 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1577 flow [2024-06-28 01:33:56,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1577, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-28 01:33:56,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:33:56,189 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1577 flow [2024-06-28 01:33:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:56,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:56,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:56,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:33:56,189 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:56,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1305810708, now seen corresponding path program 8 times [2024-06-28 01:33:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:56,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644617319] [2024-06-28 01:33:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644617319] [2024-06-28 01:33:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644617319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:56,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:56,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:56,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594811371] [2024-06-28 01:33:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:56,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:57,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:57,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:57,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:57,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:57,454 INFO L124 PetriNetUnfolderBase]: 941/1902 cut-off events. [2024-06-28 01:33:57,454 INFO L125 PetriNetUnfolderBase]: For 35149/35149 co-relation queries the response was YES. [2024-06-28 01:33:57,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8696 conditions, 1902 events. 941/1902 cut-off events. For 35149/35149 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12015 event pairs, 250 based on Foata normal form. 2/1791 useless extension candidates. Maximal degree in co-relation 8605. Up to 1318 conditions per place. [2024-06-28 01:33:57,466 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 161 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-28 01:33:57,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 199 transitions, 2205 flow [2024-06-28 01:33:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:33:57,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-28 01:33:57,467 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1577 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:33:57,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 199 transitions, 2205 flow [2024-06-28 01:33:57,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 199 transitions, 2150 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:57,562 INFO L231 Difference]: Finished difference. Result has 202 places, 167 transitions, 1622 flow [2024-06-28 01:33:57,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1622, PETRI_PLACES=202, PETRI_TRANSITIONS=167} [2024-06-28 01:33:57,562 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 01:33:57,562 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 167 transitions, 1622 flow [2024-06-28 01:33:57,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:57,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:57,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:33:57,563 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:57,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2019125368, now seen corresponding path program 9 times [2024-06-28 01:33:57,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:57,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229110454] [2024-06-28 01:33:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229110454] [2024-06-28 01:33:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229110454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:58,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:58,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009985357] [2024-06-28 01:33:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:58,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:58,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 167 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:58,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:58,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:58,829 INFO L124 PetriNetUnfolderBase]: 958/1944 cut-off events. [2024-06-28 01:33:58,830 INFO L125 PetriNetUnfolderBase]: For 36768/36768 co-relation queries the response was YES. [2024-06-28 01:33:58,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1944 events. 958/1944 cut-off events. For 36768/36768 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12381 event pairs, 266 based on Foata normal form. 2/1828 useless extension candidates. Maximal degree in co-relation 8852. Up to 1488 conditions per place. [2024-06-28 01:33:58,841 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 160 selfloop transitions, 27 changer transitions 0/196 dead transitions. [2024-06-28 01:33:58,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 196 transitions, 2216 flow [2024-06-28 01:33:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:33:58,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:33:58,842 INFO L175 Difference]: Start difference. First operand has 202 places, 167 transitions, 1622 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:33:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 196 transitions, 2216 flow [2024-06-28 01:33:58,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 196 transitions, 2161 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:58,948 INFO L231 Difference]: Finished difference. Result has 206 places, 168 transitions, 1645 flow [2024-06-28 01:33:58,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1645, PETRI_PLACES=206, PETRI_TRANSITIONS=168} [2024-06-28 01:33:58,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-28 01:33:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 168 transitions, 1645 flow [2024-06-28 01:33:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:58,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:33:58,949 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1507511788, now seen corresponding path program 10 times [2024-06-28 01:33:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930750226] [2024-06-28 01:33:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:59,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:59,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930750226] [2024-06-28 01:33:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930750226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:59,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633642343] [2024-06-28 01:33:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:59,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 168 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:59,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:59,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:59,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:00,131 INFO L124 PetriNetUnfolderBase]: 955/1947 cut-off events. [2024-06-28 01:34:00,131 INFO L125 PetriNetUnfolderBase]: For 34043/34043 co-relation queries the response was YES. [2024-06-28 01:34:00,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8771 conditions, 1947 events. 955/1947 cut-off events. For 34043/34043 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12427 event pairs, 278 based on Foata normal form. 2/1827 useless extension candidates. Maximal degree in co-relation 8677. Up to 1559 conditions per place. [2024-06-28 01:34:00,146 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 156 selfloop transitions, 26 changer transitions 0/191 dead transitions. [2024-06-28 01:34:00,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 191 transitions, 2083 flow [2024-06-28 01:34:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:34:00,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:34:00,147 INFO L175 Difference]: Start difference. First operand has 206 places, 168 transitions, 1645 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:34:00,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 191 transitions, 2083 flow [2024-06-28 01:34:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 191 transitions, 2003 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:00,263 INFO L231 Difference]: Finished difference. Result has 208 places, 168 transitions, 1621 flow [2024-06-28 01:34:00,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=208, PETRI_TRANSITIONS=168} [2024-06-28 01:34:00,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 01:34:00,264 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 168 transitions, 1621 flow [2024-06-28 01:34:00,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:00,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:00,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:34:00,264 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:00,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash 674281014, now seen corresponding path program 1 times [2024-06-28 01:34:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:00,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328347222] [2024-06-28 01:34:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328347222] [2024-06-28 01:34:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328347222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087080756] [2024-06-28 01:34:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:01,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:01,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 168 transitions, 1621 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:01,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:01,729 INFO L124 PetriNetUnfolderBase]: 999/2019 cut-off events. [2024-06-28 01:34:01,729 INFO L125 PetriNetUnfolderBase]: For 33907/33907 co-relation queries the response was YES. [2024-06-28 01:34:01,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 2019 events. 999/2019 cut-off events. For 33907/33907 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12876 event pairs, 282 based on Foata normal form. 1/1885 useless extension candidates. Maximal degree in co-relation 9030. Up to 1641 conditions per place. [2024-06-28 01:34:01,743 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 163 selfloop transitions, 41 changer transitions 0/213 dead transitions. [2024-06-28 01:34:01,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 213 transitions, 2435 flow [2024-06-28 01:34:01,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:34:01,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:34:01,745 INFO L175 Difference]: Start difference. First operand has 208 places, 168 transitions, 1621 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:34:01,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 213 transitions, 2435 flow [2024-06-28 01:34:01,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 2359 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:01,852 INFO L231 Difference]: Finished difference. Result has 216 places, 194 transitions, 2059 flow [2024-06-28 01:34:01,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2059, PETRI_PLACES=216, PETRI_TRANSITIONS=194} [2024-06-28 01:34:01,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-28 01:34:01,853 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 194 transitions, 2059 flow [2024-06-28 01:34:01,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:01,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:01,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:34:01,854 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:01,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 860178579, now seen corresponding path program 1 times [2024-06-28 01:34:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456270465] [2024-06-28 01:34:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:01,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456270465] [2024-06-28 01:34:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456270465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:02,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358944035] [2024-06-28 01:34:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:02,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:02,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 194 transitions, 2059 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:02,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:02,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:02,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:03,304 INFO L124 PetriNetUnfolderBase]: 1087/2244 cut-off events. [2024-06-28 01:34:03,305 INFO L125 PetriNetUnfolderBase]: For 54710/54710 co-relation queries the response was YES. [2024-06-28 01:34:03,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 2244 events. 1087/2244 cut-off events. For 54710/54710 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14822 event pairs, 323 based on Foata normal form. 12/2111 useless extension candidates. Maximal degree in co-relation 10011. Up to 1614 conditions per place. [2024-06-28 01:34:03,319 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 183 selfloop transitions, 33 changer transitions 0/225 dead transitions. [2024-06-28 01:34:03,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 225 transitions, 2657 flow [2024-06-28 01:34:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:34:03,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:34:03,320 INFO L175 Difference]: Start difference. First operand has 216 places, 194 transitions, 2059 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:34:03,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 225 transitions, 2657 flow [2024-06-28 01:34:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 225 transitions, 2580 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:03,459 INFO L231 Difference]: Finished difference. Result has 225 places, 195 transitions, 2076 flow [2024-06-28 01:34:03,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2076, PETRI_PLACES=225, PETRI_TRANSITIONS=195} [2024-06-28 01:34:03,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 01:34:03,460 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 195 transitions, 2076 flow [2024-06-28 01:34:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:03,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:03,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:34:03,460 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:03,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2011491432, now seen corresponding path program 2 times [2024-06-28 01:34:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803890037] [2024-06-28 01:34:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803890037] [2024-06-28 01:34:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803890037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:04,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279388397] [2024-06-28 01:34:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:04,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:04,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:04,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 195 transitions, 2076 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:04,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:04,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:04,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:04,936 INFO L124 PetriNetUnfolderBase]: 1103/2268 cut-off events. [2024-06-28 01:34:04,936 INFO L125 PetriNetUnfolderBase]: For 42057/42057 co-relation queries the response was YES. [2024-06-28 01:34:04,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10523 conditions, 2268 events. 1103/2268 cut-off events. For 42057/42057 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14940 event pairs, 318 based on Foata normal form. 1/2118 useless extension candidates. Maximal degree in co-relation 10420. Up to 1704 conditions per place. [2024-06-28 01:34:04,949 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 135 selfloop transitions, 77 changer transitions 0/221 dead transitions. [2024-06-28 01:34:04,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 221 transitions, 2838 flow [2024-06-28 01:34:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:34:04,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:34:04,950 INFO L175 Difference]: Start difference. First operand has 225 places, 195 transitions, 2076 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:34:04,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 221 transitions, 2838 flow [2024-06-28 01:34:05,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 2758 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:05,075 INFO L231 Difference]: Finished difference. Result has 227 places, 199 transitions, 2295 flow [2024-06-28 01:34:05,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2295, PETRI_PLACES=227, PETRI_TRANSITIONS=199} [2024-06-28 01:34:05,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 01:34:05,076 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 199 transitions, 2295 flow [2024-06-28 01:34:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:05,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:05,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:05,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:34:05,077 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:05,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1646023542, now seen corresponding path program 11 times [2024-06-28 01:34:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099426486] [2024-06-28 01:34:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:05,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:05,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099426486] [2024-06-28 01:34:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099426486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:05,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:05,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459299609] [2024-06-28 01:34:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:05,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:06,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:06,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 199 transitions, 2295 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:06,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:06,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:06,572 INFO L124 PetriNetUnfolderBase]: 1146/2355 cut-off events. [2024-06-28 01:34:06,573 INFO L125 PetriNetUnfolderBase]: For 49409/49409 co-relation queries the response was YES. [2024-06-28 01:34:06,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11177 conditions, 2355 events. 1146/2355 cut-off events. For 49409/49409 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15731 event pairs, 327 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 11073. Up to 1749 conditions per place. [2024-06-28 01:34:06,589 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 177 selfloop transitions, 47 changer transitions 0/233 dead transitions. [2024-06-28 01:34:06,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 233 transitions, 3047 flow [2024-06-28 01:34:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:34:06,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:34:06,590 INFO L175 Difference]: Start difference. First operand has 227 places, 199 transitions, 2295 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:34:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 233 transitions, 3047 flow [2024-06-28 01:34:06,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 233 transitions, 2858 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:06,735 INFO L231 Difference]: Finished difference. Result has 230 places, 207 transitions, 2318 flow [2024-06-28 01:34:06,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2318, PETRI_PLACES=230, PETRI_TRANSITIONS=207} [2024-06-28 01:34:06,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 01:34:06,738 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 207 transitions, 2318 flow [2024-06-28 01:34:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:06,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:34:06,738 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:06,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1646230932, now seen corresponding path program 12 times [2024-06-28 01:34:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:06,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545344942] [2024-06-28 01:34:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:06,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545344942] [2024-06-28 01:34:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545344942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:07,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:07,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:07,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555037579] [2024-06-28 01:34:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:07,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:07,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:07,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:07,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 207 transitions, 2318 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:07,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:07,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:07,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:08,187 INFO L124 PetriNetUnfolderBase]: 1143/2362 cut-off events. [2024-06-28 01:34:08,187 INFO L125 PetriNetUnfolderBase]: For 46014/46014 co-relation queries the response was YES. [2024-06-28 01:34:08,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 2362 events. 1143/2362 cut-off events. For 46014/46014 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15838 event pairs, 333 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 10940. Up to 1799 conditions per place. [2024-06-28 01:34:08,203 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 173 selfloop transitions, 46 changer transitions 0/228 dead transitions. [2024-06-28 01:34:08,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 228 transitions, 2824 flow [2024-06-28 01:34:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:34:08,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:34:08,204 INFO L175 Difference]: Start difference. First operand has 230 places, 207 transitions, 2318 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:34:08,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 228 transitions, 2824 flow [2024-06-28 01:34:08,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 228 transitions, 2739 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:08,391 INFO L231 Difference]: Finished difference. Result has 237 places, 207 transitions, 2329 flow [2024-06-28 01:34:08,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2329, PETRI_PLACES=237, PETRI_TRANSITIONS=207} [2024-06-28 01:34:08,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 01:34:08,392 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 207 transitions, 2329 flow [2024-06-28 01:34:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:08,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:08,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:08,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:34:08,392 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:08,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -770942716, now seen corresponding path program 13 times [2024-06-28 01:34:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:08,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27380285] [2024-06-28 01:34:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:09,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27380285] [2024-06-28 01:34:09,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27380285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740434788] [2024-06-28 01:34:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:09,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:09,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 207 transitions, 2329 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:09,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:09,732 INFO L124 PetriNetUnfolderBase]: 1166/2410 cut-off events. [2024-06-28 01:34:09,732 INFO L125 PetriNetUnfolderBase]: For 45958/45958 co-relation queries the response was YES. [2024-06-28 01:34:09,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11144 conditions, 2410 events. 1166/2410 cut-off events. For 45958/45958 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16248 event pairs, 342 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 11036. Up to 1837 conditions per place. [2024-06-28 01:34:09,750 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 174 selfloop transitions, 49 changer transitions 0/232 dead transitions. [2024-06-28 01:34:09,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 232 transitions, 2899 flow [2024-06-28 01:34:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:34:09,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:34:09,751 INFO L175 Difference]: Start difference. First operand has 237 places, 207 transitions, 2329 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:34:09,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 232 transitions, 2899 flow [2024-06-28 01:34:09,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 232 transitions, 2798 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:09,926 INFO L231 Difference]: Finished difference. Result has 239 places, 211 transitions, 2396 flow [2024-06-28 01:34:09,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2396, PETRI_PLACES=239, PETRI_TRANSITIONS=211} [2024-06-28 01:34:09,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 01:34:09,927 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 211 transitions, 2396 flow [2024-06-28 01:34:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:09,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:09,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:34:09,927 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:09,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1640517012, now seen corresponding path program 14 times [2024-06-28 01:34:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568692565] [2024-06-28 01:34:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:10,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568692565] [2024-06-28 01:34:10,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568692565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:10,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:10,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512155897] [2024-06-28 01:34:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:10,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:10,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:10,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:10,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 211 transitions, 2396 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:10,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:10,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:10,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:11,321 INFO L124 PetriNetUnfolderBase]: 1187/2450 cut-off events. [2024-06-28 01:34:11,321 INFO L125 PetriNetUnfolderBase]: For 48335/48335 co-relation queries the response was YES. [2024-06-28 01:34:11,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11492 conditions, 2450 events. 1187/2450 cut-off events. For 48335/48335 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16586 event pairs, 325 based on Foata normal form. 2/2296 useless extension candidates. Maximal degree in co-relation 11382. Up to 1618 conditions per place. [2024-06-28 01:34:11,336 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 181 selfloop transitions, 53 changer transitions 0/243 dead transitions. [2024-06-28 01:34:11,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 243 transitions, 3136 flow [2024-06-28 01:34:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:34:11,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:34:11,337 INFO L175 Difference]: Start difference. First operand has 239 places, 211 transitions, 2396 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:34:11,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 243 transitions, 3136 flow [2024-06-28 01:34:11,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 243 transitions, 3037 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:11,537 INFO L231 Difference]: Finished difference. Result has 244 places, 213 transitions, 2457 flow [2024-06-28 01:34:11,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2457, PETRI_PLACES=244, PETRI_TRANSITIONS=213} [2024-06-28 01:34:11,537 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 01:34:11,538 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 213 transitions, 2457 flow [2024-06-28 01:34:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:11,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:11,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:11,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:34:11,538 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:11,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1973476168, now seen corresponding path program 15 times [2024-06-28 01:34:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816383443] [2024-06-28 01:34:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:12,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:12,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816383443] [2024-06-28 01:34:12,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816383443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:12,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:12,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:12,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065502467] [2024-06-28 01:34:12,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:12,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:12,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:12,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 213 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:12,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:12,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:12,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:12,878 INFO L124 PetriNetUnfolderBase]: 1210/2521 cut-off events. [2024-06-28 01:34:12,879 INFO L125 PetriNetUnfolderBase]: For 50324/50324 co-relation queries the response was YES. [2024-06-28 01:34:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11821 conditions, 2521 events. 1210/2521 cut-off events. For 50324/50324 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17293 event pairs, 354 based on Foata normal form. 2/2353 useless extension candidates. Maximal degree in co-relation 11710. Up to 1914 conditions per place. [2024-06-28 01:34:12,899 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 179 selfloop transitions, 49 changer transitions 0/237 dead transitions. [2024-06-28 01:34:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 237 transitions, 3032 flow [2024-06-28 01:34:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:34:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:34:12,900 INFO L175 Difference]: Start difference. First operand has 244 places, 213 transitions, 2457 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:34:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 237 transitions, 3032 flow [2024-06-28 01:34:13,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 237 transitions, 2933 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:13,108 INFO L231 Difference]: Finished difference. Result has 248 places, 216 transitions, 2513 flow [2024-06-28 01:34:13,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2513, PETRI_PLACES=248, PETRI_TRANSITIONS=216} [2024-06-28 01:34:13,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 01:34:13,109 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 216 transitions, 2513 flow [2024-06-28 01:34:13,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:13,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:13,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:34:13,109 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:13,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1847320182, now seen corresponding path program 16 times [2024-06-28 01:34:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653230399] [2024-06-28 01:34:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653230399] [2024-06-28 01:34:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653230399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:13,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442845279] [2024-06-28 01:34:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:13,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:13,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:13,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 216 transitions, 2513 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:13,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:13,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:14,441 INFO L124 PetriNetUnfolderBase]: 1227/2561 cut-off events. [2024-06-28 01:34:14,441 INFO L125 PetriNetUnfolderBase]: For 50447/50447 co-relation queries the response was YES. [2024-06-28 01:34:14,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11955 conditions, 2561 events. 1227/2561 cut-off events. For 50447/50447 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17681 event pairs, 357 based on Foata normal form. 2/2390 useless extension candidates. Maximal degree in co-relation 11842. Up to 1945 conditions per place. [2024-06-28 01:34:14,457 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 179 selfloop transitions, 50 changer transitions 0/238 dead transitions. [2024-06-28 01:34:14,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 238 transitions, 3061 flow [2024-06-28 01:34:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:34:14,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:34:14,457 INFO L175 Difference]: Start difference. First operand has 248 places, 216 transitions, 2513 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:34:14,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 238 transitions, 3061 flow [2024-06-28 01:34:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 238 transitions, 2939 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:14,647 INFO L231 Difference]: Finished difference. Result has 251 places, 217 transitions, 2519 flow [2024-06-28 01:34:14,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2519, PETRI_PLACES=251, PETRI_TRANSITIONS=217} [2024-06-28 01:34:14,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 01:34:14,647 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 217 transitions, 2519 flow [2024-06-28 01:34:14,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:14,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:14,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:34:14,648 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash -515631498, now seen corresponding path program 17 times [2024-06-28 01:34:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570409569] [2024-06-28 01:34:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570409569] [2024-06-28 01:34:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570409569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:15,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868363754] [2024-06-28 01:34:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:15,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:15,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 217 transitions, 2519 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:15,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:15,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,955 INFO L124 PetriNetUnfolderBase]: 1244/2597 cut-off events. [2024-06-28 01:34:15,956 INFO L125 PetriNetUnfolderBase]: For 51839/51839 co-relation queries the response was YES. [2024-06-28 01:34:15,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 2597 events. 1244/2597 cut-off events. For 51839/51839 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17966 event pairs, 370 based on Foata normal form. 2/2424 useless extension candidates. Maximal degree in co-relation 11991. Up to 1976 conditions per place. [2024-06-28 01:34:15,975 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 174 selfloop transitions, 57 changer transitions 0/240 dead transitions. [2024-06-28 01:34:15,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 240 transitions, 3081 flow [2024-06-28 01:34:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:34:15,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:34:15,976 INFO L175 Difference]: Start difference. First operand has 251 places, 217 transitions, 2519 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:34:15,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 240 transitions, 3081 flow [2024-06-28 01:34:16,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 240 transitions, 2959 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:16,181 INFO L231 Difference]: Finished difference. Result has 254 places, 219 transitions, 2554 flow [2024-06-28 01:34:16,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2554, PETRI_PLACES=254, PETRI_TRANSITIONS=219} [2024-06-28 01:34:16,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 01:34:16,183 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 219 transitions, 2554 flow [2024-06-28 01:34:16,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:16,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:16,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:16,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:34:16,184 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:16,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -771150106, now seen corresponding path program 18 times [2024-06-28 01:34:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:16,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580842133] [2024-06-28 01:34:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580842133] [2024-06-28 01:34:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580842133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:16,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:16,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903739268] [2024-06-28 01:34:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:17,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:17,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 219 transitions, 2554 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:17,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:17,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:17,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:17,620 INFO L124 PetriNetUnfolderBase]: 1281/2682 cut-off events. [2024-06-28 01:34:17,620 INFO L125 PetriNetUnfolderBase]: For 59039/59039 co-relation queries the response was YES. [2024-06-28 01:34:17,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12717 conditions, 2682 events. 1281/2682 cut-off events. For 59039/59039 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18724 event pairs, 374 based on Foata normal form. 2/2507 useless extension candidates. Maximal degree in co-relation 12602. Up to 1946 conditions per place. [2024-06-28 01:34:17,637 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 183 selfloop transitions, 55 changer transitions 0/247 dead transitions. [2024-06-28 01:34:17,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 247 transitions, 3300 flow [2024-06-28 01:34:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:34:17,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:34:17,638 INFO L175 Difference]: Start difference. First operand has 254 places, 219 transitions, 2554 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:34:17,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 247 transitions, 3300 flow [2024-06-28 01:34:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 247 transitions, 3168 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:17,872 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 2590 flow [2024-06-28 01:34:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2590, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2024-06-28 01:34:17,872 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 01:34:17,872 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 2590 flow [2024-06-28 01:34:17,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:34:17,873 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:17,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1839962952, now seen corresponding path program 19 times [2024-06-28 01:34:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865309178] [2024-06-28 01:34:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:18,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865309178] [2024-06-28 01:34:18,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865309178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:18,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:18,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:18,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353768379] [2024-06-28 01:34:18,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:18,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:19,317 INFO L124 PetriNetUnfolderBase]: 1278/2674 cut-off events. [2024-06-28 01:34:19,317 INFO L125 PetriNetUnfolderBase]: For 55247/55247 co-relation queries the response was YES. [2024-06-28 01:34:19,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12495 conditions, 2674 events. 1278/2674 cut-off events. For 55247/55247 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18683 event pairs, 373 based on Foata normal form. 2/2498 useless extension candidates. Maximal degree in co-relation 12379. Up to 1965 conditions per place. [2024-06-28 01:34:19,337 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 186 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2024-06-28 01:34:19,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 246 transitions, 3146 flow [2024-06-28 01:34:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:34:19,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:34:19,338 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 2590 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:34:19,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 246 transitions, 3146 flow [2024-06-28 01:34:19,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 246 transitions, 3057 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:19,557 INFO L231 Difference]: Finished difference. Result has 261 places, 221 transitions, 2607 flow [2024-06-28 01:34:19,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=261, PETRI_TRANSITIONS=221} [2024-06-28 01:34:19,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 01:34:19,557 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 221 transitions, 2607 flow [2024-06-28 01:34:19,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:19,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:19,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:34:19,558 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash -763792876, now seen corresponding path program 20 times [2024-06-28 01:34:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849669642] [2024-06-28 01:34:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:20,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849669642] [2024-06-28 01:34:20,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849669642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:20,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:20,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:20,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830247944] [2024-06-28 01:34:20,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:20,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:20,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:20,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:20,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:20,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:20,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 221 transitions, 2607 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:20,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:20,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:20,869 INFO L124 PetriNetUnfolderBase]: 1275/2674 cut-off events. [2024-06-28 01:34:20,869 INFO L125 PetriNetUnfolderBase]: For 50861/50861 co-relation queries the response was YES. [2024-06-28 01:34:20,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 2674 events. 1275/2674 cut-off events. For 50861/50861 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18701 event pairs, 385 based on Foata normal form. 2/2496 useless extension candidates. Maximal degree in co-relation 12236. Up to 2033 conditions per place. [2024-06-28 01:34:20,890 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 182 selfloop transitions, 51 changer transitions 0/242 dead transitions. [2024-06-28 01:34:20,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 242 transitions, 3141 flow [2024-06-28 01:34:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:34:20,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:34:20,891 INFO L175 Difference]: Start difference. First operand has 261 places, 221 transitions, 2607 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:34:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 242 transitions, 3141 flow [2024-06-28 01:34:21,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 242 transitions, 2911 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 01:34:21,127 INFO L231 Difference]: Finished difference. Result has 260 places, 221 transitions, 2483 flow [2024-06-28 01:34:21,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2483, PETRI_PLACES=260, PETRI_TRANSITIONS=221} [2024-06-28 01:34:21,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:34:21,127 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 221 transitions, 2483 flow [2024-06-28 01:34:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:21,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:21,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:34:21,128 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:21,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash -506417151, now seen corresponding path program 2 times [2024-06-28 01:34:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677817035] [2024-06-28 01:34:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:21,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677817035] [2024-06-28 01:34:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677817035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:21,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:21,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172256766] [2024-06-28 01:34:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:22,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 221 transitions, 2483 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:22,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:22,683 INFO L124 PetriNetUnfolderBase]: 1363/2901 cut-off events. [2024-06-28 01:34:22,684 INFO L125 PetriNetUnfolderBase]: For 75183/75183 co-relation queries the response was YES. [2024-06-28 01:34:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12607 conditions, 2901 events. 1363/2901 cut-off events. For 75183/75183 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20873 event pairs, 433 based on Foata normal form. 12/2723 useless extension candidates. Maximal degree in co-relation 12490. Up to 2170 conditions per place. [2024-06-28 01:34:22,707 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 19 changer transitions 0/249 dead transitions. [2024-06-28 01:34:22,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 249 transitions, 3121 flow [2024-06-28 01:34:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:34:22,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:34:22,708 INFO L175 Difference]: Start difference. First operand has 260 places, 221 transitions, 2483 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:34:22,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 249 transitions, 3121 flow [2024-06-28 01:34:22,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 249 transitions, 2988 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:34:23,001 INFO L231 Difference]: Finished difference. Result has 260 places, 222 transitions, 2418 flow [2024-06-28 01:34:23,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2418, PETRI_PLACES=260, PETRI_TRANSITIONS=222} [2024-06-28 01:34:23,002 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:34:23,002 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 222 transitions, 2418 flow [2024-06-28 01:34:23,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:23,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:23,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:23,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:34:23,002 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:23,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1847596888, now seen corresponding path program 3 times [2024-06-28 01:34:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:23,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733206341] [2024-06-28 01:34:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:23,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733206341] [2024-06-28 01:34:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733206341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389022333] [2024-06-28 01:34:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:24,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:24,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 222 transitions, 2418 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:24,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:24,615 INFO L124 PetriNetUnfolderBase]: 1370/2910 cut-off events. [2024-06-28 01:34:24,616 INFO L125 PetriNetUnfolderBase]: For 51500/51500 co-relation queries the response was YES. [2024-06-28 01:34:24,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 2910 events. 1370/2910 cut-off events. For 51500/51500 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20909 event pairs, 421 based on Foata normal form. 1/2713 useless extension candidates. Maximal degree in co-relation 12527. Up to 2052 conditions per place. [2024-06-28 01:34:24,639 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 154 selfloop transitions, 82 changer transitions 0/245 dead transitions. [2024-06-28 01:34:24,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 245 transitions, 3086 flow [2024-06-28 01:34:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:34:24,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:34:24,640 INFO L175 Difference]: Start difference. First operand has 260 places, 222 transitions, 2418 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:34:24,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 245 transitions, 3086 flow [2024-06-28 01:34:24,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 245 transitions, 3032 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:24,877 INFO L231 Difference]: Finished difference. Result has 262 places, 224 transitions, 2607 flow [2024-06-28 01:34:24,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2607, PETRI_PLACES=262, PETRI_TRANSITIONS=224} [2024-06-28 01:34:24,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 01:34:24,877 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 224 transitions, 2607 flow [2024-06-28 01:34:24,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:24,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:24,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:34:24,878 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:24,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash -515354451, now seen corresponding path program 3 times [2024-06-28 01:34:24,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:24,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855303005] [2024-06-28 01:34:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:24,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:25,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:25,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855303005] [2024-06-28 01:34:25,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855303005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:25,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:25,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465885056] [2024-06-28 01:34:25,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:25,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:25,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:25,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:25,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 224 transitions, 2607 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:25,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:25,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:25,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:26,503 INFO L124 PetriNetUnfolderBase]: 1458/3135 cut-off events. [2024-06-28 01:34:26,503 INFO L125 PetriNetUnfolderBase]: For 82594/82594 co-relation queries the response was YES. [2024-06-28 01:34:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13636 conditions, 3135 events. 1458/3135 cut-off events. For 82594/82594 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23157 event pairs, 461 based on Foata normal form. 12/2938 useless extension candidates. Maximal degree in co-relation 13519. Up to 2142 conditions per place. [2024-06-28 01:34:26,528 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 59 changer transitions 0/255 dead transitions. [2024-06-28 01:34:26,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 255 transitions, 3315 flow [2024-06-28 01:34:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:34:26,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:34:26,530 INFO L175 Difference]: Start difference. First operand has 262 places, 224 transitions, 2607 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:34:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 255 transitions, 3315 flow [2024-06-28 01:34:26,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 255 transitions, 3096 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:26,806 INFO L231 Difference]: Finished difference. Result has 264 places, 225 transitions, 2538 flow [2024-06-28 01:34:26,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2538, PETRI_PLACES=264, PETRI_TRANSITIONS=225} [2024-06-28 01:34:26,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 01:34:26,807 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 225 transitions, 2538 flow [2024-06-28 01:34:26,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:26,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:26,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:34:26,807 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:26,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1847597229, now seen corresponding path program 4 times [2024-06-28 01:34:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776212283] [2024-06-28 01:34:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776212283] [2024-06-28 01:34:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776212283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:27,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:27,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822463981] [2024-06-28 01:34:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:27,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:27,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:27,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:27,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 225 transitions, 2538 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:27,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:27,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:27,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:28,347 INFO L124 PetriNetUnfolderBase]: 1546/3362 cut-off events. [2024-06-28 01:34:28,347 INFO L125 PetriNetUnfolderBase]: For 85570/85570 co-relation queries the response was YES. [2024-06-28 01:34:28,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 3362 events. 1546/3362 cut-off events. For 85570/85570 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25562 event pairs, 499 based on Foata normal form. 12/3151 useless extension candidates. Maximal degree in co-relation 14284. Up to 2314 conditions per place. [2024-06-28 01:34:28,374 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 193 selfloop transitions, 54 changer transitions 0/256 dead transitions. [2024-06-28 01:34:28,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 256 transitions, 3256 flow [2024-06-28 01:34:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:34:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:34:28,375 INFO L175 Difference]: Start difference. First operand has 264 places, 225 transitions, 2538 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:34:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 256 transitions, 3256 flow [2024-06-28 01:34:28,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 3120 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:28,650 INFO L231 Difference]: Finished difference. Result has 266 places, 226 transitions, 2544 flow [2024-06-28 01:34:28,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2544, PETRI_PLACES=266, PETRI_TRANSITIONS=226} [2024-06-28 01:34:28,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-28 01:34:28,650 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 226 transitions, 2544 flow [2024-06-28 01:34:28,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:28,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:28,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:28,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:34:28,650 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:28,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash -515354792, now seen corresponding path program 4 times [2024-06-28 01:34:28,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:28,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561732803] [2024-06-28 01:34:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:28,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561732803] [2024-06-28 01:34:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561732803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653058025] [2024-06-28 01:34:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:29,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:29,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 226 transitions, 2544 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:29,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:29,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:29,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:30,292 INFO L124 PetriNetUnfolderBase]: 1553/3371 cut-off events. [2024-06-28 01:34:30,292 INFO L125 PetriNetUnfolderBase]: For 59427/59427 co-relation queries the response was YES. [2024-06-28 01:34:30,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14469 conditions, 3371 events. 1553/3371 cut-off events. For 59427/59427 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 25625 event pairs, 497 based on Foata normal form. 1/3144 useless extension candidates. Maximal degree in co-relation 14350. Up to 2406 conditions per place. [2024-06-28 01:34:30,317 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 145 selfloop transitions, 95 changer transitions 0/249 dead transitions. [2024-06-28 01:34:30,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 249 transitions, 3236 flow [2024-06-28 01:34:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:34:30,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:34:30,318 INFO L175 Difference]: Start difference. First operand has 266 places, 226 transitions, 2544 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:34:30,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 249 transitions, 3236 flow [2024-06-28 01:34:30,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 249 transitions, 3108 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:30,582 INFO L231 Difference]: Finished difference. Result has 268 places, 228 transitions, 2689 flow [2024-06-28 01:34:30,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=268, PETRI_TRANSITIONS=228} [2024-06-28 01:34:30,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 01:34:30,582 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 228 transitions, 2689 flow [2024-06-28 01:34:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:30,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:30,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:30,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:34:30,583 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:30,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:30,583 INFO L85 PathProgramCache]: Analyzing trace with hash -763515829, now seen corresponding path program 5 times [2024-06-28 01:34:30,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:30,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846612063] [2024-06-28 01:34:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846612063] [2024-06-28 01:34:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846612063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:31,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372697212] [2024-06-28 01:34:31,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:31,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:31,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:31,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 228 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:31,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:31,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:31,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:32,205 INFO L124 PetriNetUnfolderBase]: 1641/3596 cut-off events. [2024-06-28 01:34:32,205 INFO L125 PetriNetUnfolderBase]: For 92070/92070 co-relation queries the response was YES. [2024-06-28 01:34:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15363 conditions, 3596 events. 1641/3596 cut-off events. For 92070/92070 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 27956 event pairs, 537 based on Foata normal form. 12/3369 useless extension candidates. Maximal degree in co-relation 15243. Up to 2496 conditions per place. [2024-06-28 01:34:32,233 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 196 selfloop transitions, 54 changer transitions 0/259 dead transitions. [2024-06-28 01:34:32,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 259 transitions, 3421 flow [2024-06-28 01:34:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:34:32,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:34:32,234 INFO L175 Difference]: Start difference. First operand has 268 places, 228 transitions, 2689 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:34:32,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 259 transitions, 3421 flow [2024-06-28 01:34:32,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 259 transitions, 3172 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:32,466 INFO L231 Difference]: Finished difference. Result has 270 places, 229 transitions, 2584 flow [2024-06-28 01:34:32,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2584, PETRI_PLACES=270, PETRI_TRANSITIONS=229} [2024-06-28 01:34:32,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 01:34:32,467 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 229 transitions, 2584 flow [2024-06-28 01:34:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:32,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:32,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:32,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:34:32,467 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:32,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash -506417492, now seen corresponding path program 5 times [2024-06-28 01:34:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:32,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094382652] [2024-06-28 01:34:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094382652] [2024-06-28 01:34:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094382652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174795606] [2024-06-28 01:34:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:33,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:33,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 229 transitions, 2584 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:33,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:33,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:33,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:34,164 INFO L124 PetriNetUnfolderBase]: 1648/3606 cut-off events. [2024-06-28 01:34:34,164 INFO L125 PetriNetUnfolderBase]: For 63796/63796 co-relation queries the response was YES. [2024-06-28 01:34:34,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15357 conditions, 3606 events. 1648/3606 cut-off events. For 63796/63796 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28032 event pairs, 547 based on Foata normal form. 1/3367 useless extension candidates. Maximal degree in co-relation 15236. Up to 2885 conditions per place. [2024-06-28 01:34:34,190 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 222 selfloop transitions, 22 changer transitions 0/253 dead transitions. [2024-06-28 01:34:34,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 253 transitions, 3251 flow [2024-06-28 01:34:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:34:34,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:34:34,191 INFO L175 Difference]: Start difference. First operand has 270 places, 229 transitions, 2584 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:34:34,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 253 transitions, 3251 flow [2024-06-28 01:34:34,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 253 transitions, 3119 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:34,477 INFO L231 Difference]: Finished difference. Result has 274 places, 233 transitions, 2629 flow [2024-06-28 01:34:34,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2629, PETRI_PLACES=274, PETRI_TRANSITIONS=233} [2024-06-28 01:34:34,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 01:34:34,478 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 233 transitions, 2629 flow [2024-06-28 01:34:34,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:34,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:34,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:34:34,478 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash -763516170, now seen corresponding path program 6 times [2024-06-28 01:34:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140982511] [2024-06-28 01:34:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140982511] [2024-06-28 01:34:35,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140982511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:35,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:35,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855622619] [2024-06-28 01:34:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:35,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:35,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 233 transitions, 2629 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:35,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:35,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:35,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:36,201 INFO L124 PetriNetUnfolderBase]: 1655/3618 cut-off events. [2024-06-28 01:34:36,201 INFO L125 PetriNetUnfolderBase]: For 65372/65372 co-relation queries the response was YES. [2024-06-28 01:34:36,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15299 conditions, 3618 events. 1655/3618 cut-off events. For 65372/65372 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28091 event pairs, 535 based on Foata normal form. 1/3373 useless extension candidates. Maximal degree in co-relation 15176. Up to 2598 conditions per place. [2024-06-28 01:34:36,240 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 160 selfloop transitions, 87 changer transitions 0/256 dead transitions. [2024-06-28 01:34:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 3355 flow [2024-06-28 01:34:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:34:36,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:34:36,241 INFO L175 Difference]: Start difference. First operand has 274 places, 233 transitions, 2629 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:34:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 3355 flow [2024-06-28 01:34:36,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 256 transitions, 3222 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:36,581 INFO L231 Difference]: Finished difference. Result has 276 places, 235 transitions, 2761 flow [2024-06-28 01:34:36,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2761, PETRI_PLACES=276, PETRI_TRANSITIONS=235} [2024-06-28 01:34:36,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 01:34:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 235 transitions, 2761 flow [2024-06-28 01:34:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:36,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:34:36,582 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:36,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash -190613672, now seen corresponding path program 7 times [2024-06-28 01:34:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886169729] [2024-06-28 01:34:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886169729] [2024-06-28 01:34:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886169729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:37,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:37,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:37,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217760209] [2024-06-28 01:34:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:37,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:37,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:37,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 235 transitions, 2761 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:37,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:37,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:37,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:38,214 INFO L124 PetriNetUnfolderBase]: 1653/3619 cut-off events. [2024-06-28 01:34:38,214 INFO L125 PetriNetUnfolderBase]: For 62850/62850 co-relation queries the response was YES. [2024-06-28 01:34:38,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15273 conditions, 3619 events. 1653/3619 cut-off events. For 62850/62850 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28171 event pairs, 547 based on Foata normal form. 1/3378 useless extension candidates. Maximal degree in co-relation 15149. Up to 2877 conditions per place. [2024-06-28 01:34:38,246 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 220 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-28 01:34:38,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 255 transitions, 3313 flow [2024-06-28 01:34:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:34:38,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:34:38,247 INFO L175 Difference]: Start difference. First operand has 276 places, 235 transitions, 2761 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:34:38,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 255 transitions, 3313 flow [2024-06-28 01:34:38,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 255 transitions, 3072 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:38,647 INFO L231 Difference]: Finished difference. Result has 279 places, 235 transitions, 2577 flow [2024-06-28 01:34:38,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2577, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2024-06-28 01:34:38,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 01:34:38,647 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 2577 flow [2024-06-28 01:34:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:38,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:38,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:38,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:34:38,648 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash -190613331, now seen corresponding path program 6 times [2024-06-28 01:34:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834095434] [2024-06-28 01:34:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834095434] [2024-06-28 01:34:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834095434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771706227] [2024-06-28 01:34:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:39,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:39,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 2577 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:39,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:39,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:39,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:40,371 INFO L124 PetriNetUnfolderBase]: 1670/3658 cut-off events. [2024-06-28 01:34:40,371 INFO L125 PetriNetUnfolderBase]: For 66240/66240 co-relation queries the response was YES. [2024-06-28 01:34:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3658 events. 1670/3658 cut-off events. For 66240/66240 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28538 event pairs, 560 based on Foata normal form. 2/3416 useless extension candidates. Maximal degree in co-relation 15109. Up to 2907 conditions per place. [2024-06-28 01:34:40,399 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 230 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2024-06-28 01:34:40,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 261 transitions, 3201 flow [2024-06-28 01:34:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 01:34:40,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-28 01:34:40,400 INFO L175 Difference]: Start difference. First operand has 279 places, 235 transitions, 2577 flow. Second operand 12 states and 187 transitions. [2024-06-28 01:34:40,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 261 transitions, 3201 flow [2024-06-28 01:34:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 261 transitions, 2954 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-06-28 01:34:40,741 INFO L231 Difference]: Finished difference. Result has 280 places, 237 transitions, 2434 flow [2024-06-28 01:34:40,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2434, PETRI_PLACES=280, PETRI_TRANSITIONS=237} [2024-06-28 01:34:40,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 01:34:40,742 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 237 transitions, 2434 flow [2024-06-28 01:34:40,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:40,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:40,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:34:40,742 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:40,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -190227381, now seen corresponding path program 7 times [2024-06-28 01:34:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846310685] [2024-06-28 01:34:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846310685] [2024-06-28 01:34:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846310685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326509579] [2024-06-28 01:34:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:41,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:41,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:41,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 237 transitions, 2434 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:41,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:41,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:42,497 INFO L124 PetriNetUnfolderBase]: 1667/3645 cut-off events. [2024-06-28 01:34:42,498 INFO L125 PetriNetUnfolderBase]: For 58684/58684 co-relation queries the response was YES. [2024-06-28 01:34:42,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14782 conditions, 3645 events. 1667/3645 cut-off events. For 58684/58684 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28315 event pairs, 546 based on Foata normal form. 2/3407 useless extension candidates. Maximal degree in co-relation 14657. Up to 2666 conditions per place. [2024-06-28 01:34:42,527 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 234 selfloop transitions, 27 changer transitions 0/270 dead transitions. [2024-06-28 01:34:42,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 270 transitions, 3124 flow [2024-06-28 01:34:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:34:42,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:34:42,528 INFO L175 Difference]: Start difference. First operand has 280 places, 237 transitions, 2434 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:34:42,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 270 transitions, 3124 flow [2024-06-28 01:34:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 270 transitions, 3058 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:42,836 INFO L231 Difference]: Finished difference. Result has 283 places, 238 transitions, 2462 flow [2024-06-28 01:34:42,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2462, PETRI_PLACES=283, PETRI_TRANSITIONS=238} [2024-06-28 01:34:42,836 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 01:34:42,836 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 238 transitions, 2462 flow [2024-06-28 01:34:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:42,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:42,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:34:42,837 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -691298678, now seen corresponding path program 8 times [2024-06-28 01:34:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238954701] [2024-06-28 01:34:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:43,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238954701] [2024-06-28 01:34:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238954701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:43,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231486694] [2024-06-28 01:34:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:43,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:43,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 238 transitions, 2462 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:43,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:43,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:43,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:44,492 INFO L124 PetriNetUnfolderBase]: 1695/3678 cut-off events. [2024-06-28 01:34:44,492 INFO L125 PetriNetUnfolderBase]: For 56094/56094 co-relation queries the response was YES. [2024-06-28 01:34:44,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15023 conditions, 3678 events. 1695/3678 cut-off events. For 56094/56094 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28537 event pairs, 538 based on Foata normal form. 1/3424 useless extension candidates. Maximal degree in co-relation 14897. Up to 2933 conditions per place. [2024-06-28 01:34:44,524 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 221 selfloop transitions, 56 changer transitions 0/286 dead transitions. [2024-06-28 01:34:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 3397 flow [2024-06-28 01:34:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:34:44,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:34:44,526 INFO L175 Difference]: Start difference. First operand has 283 places, 238 transitions, 2462 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:34:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 3397 flow [2024-06-28 01:34:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 286 transitions, 3313 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:44,822 INFO L231 Difference]: Finished difference. Result has 290 places, 262 transitions, 2902 flow [2024-06-28 01:34:44,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2902, PETRI_PLACES=290, PETRI_TRANSITIONS=262} [2024-06-28 01:34:44,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-28 01:34:44,822 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 262 transitions, 2902 flow [2024-06-28 01:34:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:44,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:44,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:44,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:34:44,823 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:44,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1920074816, now seen corresponding path program 9 times [2024-06-28 01:34:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134225780] [2024-06-28 01:34:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:45,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134225780] [2024-06-28 01:34:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134225780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:45,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:45,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111505438] [2024-06-28 01:34:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:45,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:45,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 262 transitions, 2902 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:45,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:45,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:45,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:46,461 INFO L124 PetriNetUnfolderBase]: 1699/3701 cut-off events. [2024-06-28 01:34:46,461 INFO L125 PetriNetUnfolderBase]: For 53395/53395 co-relation queries the response was YES. [2024-06-28 01:34:46,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 3701 events. 1699/3701 cut-off events. For 53395/53395 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28753 event pairs, 516 based on Foata normal form. 1/3437 useless extension candidates. Maximal degree in co-relation 15084. Up to 2938 conditions per place. [2024-06-28 01:34:46,494 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 222 selfloop transitions, 57 changer transitions 0/288 dead transitions. [2024-06-28 01:34:46,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 288 transitions, 3626 flow [2024-06-28 01:34:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:34:46,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:34:46,495 INFO L175 Difference]: Start difference. First operand has 290 places, 262 transitions, 2902 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:34:46,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 288 transitions, 3626 flow [2024-06-28 01:34:46,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 288 transitions, 3359 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:46,845 INFO L231 Difference]: Finished difference. Result has 293 places, 266 transitions, 2854 flow [2024-06-28 01:34:46,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2854, PETRI_PLACES=293, PETRI_TRANSITIONS=266} [2024-06-28 01:34:46,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 01:34:46,846 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 266 transitions, 2854 flow [2024-06-28 01:34:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:46,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:46,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:46,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:34:46,846 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:46,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 600420441, now seen corresponding path program 1 times [2024-06-28 01:34:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658743543] [2024-06-28 01:34:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:47,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:47,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658743543] [2024-06-28 01:34:47,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658743543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:47,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:47,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933901624] [2024-06-28 01:34:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:47,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:47,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:47,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 266 transitions, 2854 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:47,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:47,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:47,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:48,445 INFO L124 PetriNetUnfolderBase]: 1716/3740 cut-off events. [2024-06-28 01:34:48,445 INFO L125 PetriNetUnfolderBase]: For 55796/55796 co-relation queries the response was YES. [2024-06-28 01:34:48,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 3740 events. 1716/3740 cut-off events. For 55796/55796 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 29147 event pairs, 541 based on Foata normal form. 2/3479 useless extension candidates. Maximal degree in co-relation 15024. Up to 2897 conditions per place. [2024-06-28 01:34:48,473 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 210 selfloop transitions, 74 changer transitions 0/293 dead transitions. [2024-06-28 01:34:48,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 293 transitions, 3528 flow [2024-06-28 01:34:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:34:48,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:34:48,474 INFO L175 Difference]: Start difference. First operand has 293 places, 266 transitions, 2854 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:34:48,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 293 transitions, 3528 flow [2024-06-28 01:34:48,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 3387 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 01:34:48,750 INFO L231 Difference]: Finished difference. Result has 292 places, 267 transitions, 2882 flow [2024-06-28 01:34:48,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2882, PETRI_PLACES=292, PETRI_TRANSITIONS=267} [2024-06-28 01:34:48,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 01:34:48,750 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 267 transitions, 2882 flow [2024-06-28 01:34:48,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:48,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:48,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:48,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:34:48,751 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:48,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash 980140305, now seen corresponding path program 2 times [2024-06-28 01:34:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279875374] [2024-06-28 01:34:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279875374] [2024-06-28 01:34:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279875374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:49,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583892056] [2024-06-28 01:34:49,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:49,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:49,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:49,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 267 transitions, 2882 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:49,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:49,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:49,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:50,451 INFO L124 PetriNetUnfolderBase]: 1753/3805 cut-off events. [2024-06-28 01:34:50,452 INFO L125 PetriNetUnfolderBase]: For 63252/63252 co-relation queries the response was YES. [2024-06-28 01:34:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 3805 events. 1753/3805 cut-off events. For 63252/63252 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29704 event pairs, 517 based on Foata normal form. 2/3547 useless extension candidates. Maximal degree in co-relation 15612. Up to 2687 conditions per place. [2024-06-28 01:34:50,486 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 61 changer transitions 0/308 dead transitions. [2024-06-28 01:34:50,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 308 transitions, 3810 flow [2024-06-28 01:34:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:34:50,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:34:50,487 INFO L175 Difference]: Start difference. First operand has 292 places, 267 transitions, 2882 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:34:50,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 308 transitions, 3810 flow [2024-06-28 01:34:50,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 308 transitions, 3661 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:50,800 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 2885 flow [2024-06-28 01:34:50,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2885, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2024-06-28 01:34:50,800 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 01:34:50,800 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 2885 flow [2024-06-28 01:34:50,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:50,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:50,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:50,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:34:50,800 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:50,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash -578799245, now seen corresponding path program 3 times [2024-06-28 01:34:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599817079] [2024-06-28 01:34:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:50,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599817079] [2024-06-28 01:34:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599817079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:51,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:51,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:51,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095290253] [2024-06-28 01:34:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:51,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:51,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:51,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 2885 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:51,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:51,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:51,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:52,544 INFO L124 PetriNetUnfolderBase]: 1858/4054 cut-off events. [2024-06-28 01:34:52,544 INFO L125 PetriNetUnfolderBase]: For 72269/72269 co-relation queries the response was YES. [2024-06-28 01:34:52,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16832 conditions, 4054 events. 1858/4054 cut-off events. For 72269/72269 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32187 event pairs, 593 based on Foata normal form. 2/3774 useless extension candidates. Maximal degree in co-relation 16698. Up to 3063 conditions per place. [2024-06-28 01:34:52,579 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 249 selfloop transitions, 48 changer transitions 0/306 dead transitions. [2024-06-28 01:34:52,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 306 transitions, 3808 flow [2024-06-28 01:34:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:34:52,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:34:52,580 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 2885 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:34:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 306 transitions, 3808 flow [2024-06-28 01:34:52,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 306 transitions, 3720 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:52,954 INFO L231 Difference]: Finished difference. Result has 301 places, 274 transitions, 2965 flow [2024-06-28 01:34:52,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2965, PETRI_PLACES=301, PETRI_TRANSITIONS=274} [2024-06-28 01:34:52,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 01:34:52,954 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 274 transitions, 2965 flow [2024-06-28 01:34:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:52,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:52,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:52,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:34:52,954 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:52,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash 593927181, now seen corresponding path program 4 times [2024-06-28 01:34:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:52,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063330574] [2024-06-28 01:34:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:52,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:53,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063330574] [2024-06-28 01:34:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063330574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658242862] [2024-06-28 01:34:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:53,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:53,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:53,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:53,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:53,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 274 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:53,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:53,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:53,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:54,640 INFO L124 PetriNetUnfolderBase]: 1872/4097 cut-off events. [2024-06-28 01:34:54,640 INFO L125 PetriNetUnfolderBase]: For 74305/74305 co-relation queries the response was YES. [2024-06-28 01:34:54,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16960 conditions, 4097 events. 1872/4097 cut-off events. For 74305/74305 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 32682 event pairs, 601 based on Foata normal form. 4/3820 useless extension candidates. Maximal degree in co-relation 16822. Up to 3050 conditions per place. [2024-06-28 01:34:54,675 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 224 selfloop transitions, 72 changer transitions 0/305 dead transitions. [2024-06-28 01:34:54,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 305 transitions, 3681 flow [2024-06-28 01:34:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:34:54,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:34:54,676 INFO L175 Difference]: Start difference. First operand has 301 places, 274 transitions, 2965 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:34:54,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 305 transitions, 3681 flow [2024-06-28 01:34:55,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 305 transitions, 3611 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:55,037 INFO L231 Difference]: Finished difference. Result has 305 places, 275 transitions, 3060 flow [2024-06-28 01:34:55,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3060, PETRI_PLACES=305, PETRI_TRANSITIONS=275} [2024-06-28 01:34:55,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 01:34:55,038 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 275 transitions, 3060 flow [2024-06-28 01:34:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:55,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:55,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:34:55,038 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:55,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash -197756799, now seen corresponding path program 5 times [2024-06-28 01:34:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567266915] [2024-06-28 01:34:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:55,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:55,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567266915] [2024-06-28 01:34:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567266915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:55,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:55,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:55,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344667719] [2024-06-28 01:34:55,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:55,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:55,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:55,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:55,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:55,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 275 transitions, 3060 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:55,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:55,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:55,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:56,722 INFO L124 PetriNetUnfolderBase]: 1889/4112 cut-off events. [2024-06-28 01:34:56,722 INFO L125 PetriNetUnfolderBase]: For 68405/68405 co-relation queries the response was YES. [2024-06-28 01:34:56,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17290 conditions, 4112 events. 1889/4112 cut-off events. For 68405/68405 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 32674 event pairs, 583 based on Foata normal form. 2/3865 useless extension candidates. Maximal degree in co-relation 17150. Up to 3156 conditions per place. [2024-06-28 01:34:56,758 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 31 changer transitions 0/316 dead transitions. [2024-06-28 01:34:56,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 316 transitions, 3834 flow [2024-06-28 01:34:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:34:56,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:34:56,759 INFO L175 Difference]: Start difference. First operand has 305 places, 275 transitions, 3060 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:34:56,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 316 transitions, 3834 flow [2024-06-28 01:34:57,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 316 transitions, 3683 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:57,156 INFO L231 Difference]: Finished difference. Result has 307 places, 276 transitions, 2991 flow [2024-06-28 01:34:57,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2991, PETRI_PLACES=307, PETRI_TRANSITIONS=276} [2024-06-28 01:34:57,157 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 01:34:57,157 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 276 transitions, 2991 flow [2024-06-28 01:34:57,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:57,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:57,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:57,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:34:57,157 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:57,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1838053029, now seen corresponding path program 6 times [2024-06-28 01:34:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684021093] [2024-06-28 01:34:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:57,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684021093] [2024-06-28 01:34:57,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684021093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:57,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:57,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367757190] [2024-06-28 01:34:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:57,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:58,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:58,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 276 transitions, 2991 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:58,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:58,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:58,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:59,110 INFO L124 PetriNetUnfolderBase]: 2014/4352 cut-off events. [2024-06-28 01:34:59,110 INFO L125 PetriNetUnfolderBase]: For 71313/71313 co-relation queries the response was YES. [2024-06-28 01:34:59,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18453 conditions, 4352 events. 2014/4352 cut-off events. For 71313/71313 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34710 event pairs, 655 based on Foata normal form. 2/4057 useless extension candidates. Maximal degree in co-relation 18312. Up to 3405 conditions per place. [2024-06-28 01:34:59,152 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 287 selfloop transitions, 34 changer transitions 0/330 dead transitions. [2024-06-28 01:34:59,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 330 transitions, 4044 flow [2024-06-28 01:34:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:34:59,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-28 01:34:59,153 INFO L175 Difference]: Start difference. First operand has 307 places, 276 transitions, 2991 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:34:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 330 transitions, 4044 flow [2024-06-28 01:34:59,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 330 transitions, 3972 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:59,547 INFO L231 Difference]: Finished difference. Result has 315 places, 297 transitions, 3298 flow [2024-06-28 01:34:59,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3298, PETRI_PLACES=315, PETRI_TRANSITIONS=297} [2024-06-28 01:34:59,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 01:34:59,548 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 297 transitions, 3298 flow [2024-06-28 01:34:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:59,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:59,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:59,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:34:59,548 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:59,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1831623939, now seen corresponding path program 7 times [2024-06-28 01:34:59,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:59,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126395252] [2024-06-28 01:34:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126395252] [2024-06-28 01:35:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126395252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:00,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333008259] [2024-06-28 01:35:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:00,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:00,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 297 transitions, 3298 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:00,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:00,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:00,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:01,292 INFO L124 PetriNetUnfolderBase]: 2074/4476 cut-off events. [2024-06-28 01:35:01,292 INFO L125 PetriNetUnfolderBase]: For 82467/82467 co-relation queries the response was YES. [2024-06-28 01:35:01,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19503 conditions, 4476 events. 2074/4476 cut-off events. For 82467/82467 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35917 event pairs, 695 based on Foata normal form. 2/4182 useless extension candidates. Maximal degree in co-relation 19356. Up to 3240 conditions per place. [2024-06-28 01:35:01,332 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 276 selfloop transitions, 50 changer transitions 0/335 dead transitions. [2024-06-28 01:35:01,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 335 transitions, 4339 flow [2024-06-28 01:35:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:35:01,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:35:01,332 INFO L175 Difference]: Start difference. First operand has 315 places, 297 transitions, 3298 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:35:01,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 335 transitions, 4339 flow [2024-06-28 01:35:01,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 335 transitions, 4254 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:01,839 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 3432 flow [2024-06-28 01:35:01,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2024-06-28 01:35:01,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-28 01:35:01,840 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 3432 flow [2024-06-28 01:35:01,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:01,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:01,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:01,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:35:01,840 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:01,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 887144623, now seen corresponding path program 8 times [2024-06-28 01:35:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111321576] [2024-06-28 01:35:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111321576] [2024-06-28 01:35:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111321576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420665987] [2024-06-28 01:35:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:02,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 3432 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:02,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:02,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:02,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:03,545 INFO L124 PetriNetUnfolderBase]: 2114/4575 cut-off events. [2024-06-28 01:35:03,545 INFO L125 PetriNetUnfolderBase]: For 85374/85374 co-relation queries the response was YES. [2024-06-28 01:35:03,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20156 conditions, 4575 events. 2114/4575 cut-off events. For 85374/85374 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36955 event pairs, 734 based on Foata normal form. 2/4267 useless extension candidates. Maximal degree in co-relation 20007. Up to 3507 conditions per place. [2024-06-28 01:35:03,584 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 51 changer transitions 0/334 dead transitions. [2024-06-28 01:35:03,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 334 transitions, 4251 flow [2024-06-28 01:35:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:35:03,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:35:03,585 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 3432 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:35:03,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 334 transitions, 4251 flow [2024-06-28 01:35:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 334 transitions, 4163 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:04,053 INFO L231 Difference]: Finished difference. Result has 328 places, 306 transitions, 3517 flow [2024-06-28 01:35:04,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3517, PETRI_PLACES=328, PETRI_TRANSITIONS=306} [2024-06-28 01:35:04,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-28 01:35:04,053 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 306 transitions, 3517 flow [2024-06-28 01:35:04,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:04,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:04,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:04,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:35:04,054 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:04,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1051654831, now seen corresponding path program 9 times [2024-06-28 01:35:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:04,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550671830] [2024-06-28 01:35:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:04,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550671830] [2024-06-28 01:35:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550671830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:04,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589325514] [2024-06-28 01:35:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:04,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:04,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:04,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 306 transitions, 3517 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:04,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:04,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:04,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:05,978 INFO L124 PetriNetUnfolderBase]: 2131/4631 cut-off events. [2024-06-28 01:35:05,978 INFO L125 PetriNetUnfolderBase]: For 85334/85334 co-relation queries the response was YES. [2024-06-28 01:35:06,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20238 conditions, 4631 events. 2131/4631 cut-off events. For 85334/85334 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 37524 event pairs, 737 based on Foata normal form. 2/4316 useless extension candidates. Maximal degree in co-relation 20087. Up to 3538 conditions per place. [2024-06-28 01:35:06,020 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 51 changer transitions 0/338 dead transitions. [2024-06-28 01:35:06,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 338 transitions, 4344 flow [2024-06-28 01:35:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:35:06,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:35:06,021 INFO L175 Difference]: Start difference. First operand has 328 places, 306 transitions, 3517 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:35:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 338 transitions, 4344 flow [2024-06-28 01:35:06,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 338 transitions, 4284 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:06,538 INFO L231 Difference]: Finished difference. Result has 334 places, 310 transitions, 3630 flow [2024-06-28 01:35:06,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3457, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3630, PETRI_PLACES=334, PETRI_TRANSITIONS=310} [2024-06-28 01:35:06,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-28 01:35:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 310 transitions, 3630 flow [2024-06-28 01:35:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:06,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:35:06,539 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:06,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 114469525, now seen corresponding path program 10 times [2024-06-28 01:35:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077073958] [2024-06-28 01:35:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:07,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077073958] [2024-06-28 01:35:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077073958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:07,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557553164] [2024-06-28 01:35:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:07,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:07,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 310 transitions, 3630 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:07,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:07,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:07,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:08,353 INFO L124 PetriNetUnfolderBase]: 2148/4665 cut-off events. [2024-06-28 01:35:08,354 INFO L125 PetriNetUnfolderBase]: For 87762/87762 co-relation queries the response was YES. [2024-06-28 01:35:08,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20549 conditions, 4665 events. 2148/4665 cut-off events. For 87762/87762 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 37817 event pairs, 737 based on Foata normal form. 2/4351 useless extension candidates. Maximal degree in co-relation 20396. Up to 3482 conditions per place. [2024-06-28 01:35:08,393 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 282 selfloop transitions, 52 changer transitions 0/343 dead transitions. [2024-06-28 01:35:08,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 4436 flow [2024-06-28 01:35:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:35:08,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 01:35:08,394 INFO L175 Difference]: Start difference. First operand has 334 places, 310 transitions, 3630 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:35:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 4436 flow [2024-06-28 01:35:08,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 343 transitions, 4359 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:08,893 INFO L231 Difference]: Finished difference. Result has 340 places, 311 transitions, 3683 flow [2024-06-28 01:35:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3683, PETRI_PLACES=340, PETRI_TRANSITIONS=311} [2024-06-28 01:35:08,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 01:35:08,894 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 311 transitions, 3683 flow [2024-06-28 01:35:08,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:08,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:08,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:35:08,894 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:08,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash -56232905, now seen corresponding path program 11 times [2024-06-28 01:35:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457233742] [2024-06-28 01:35:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:09,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457233742] [2024-06-28 01:35:09,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457233742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:09,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:09,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039972664] [2024-06-28 01:35:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:09,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:09,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 311 transitions, 3683 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:09,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:09,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:09,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:10,857 INFO L124 PetriNetUnfolderBase]: 2165/4676 cut-off events. [2024-06-28 01:35:10,857 INFO L125 PetriNetUnfolderBase]: For 89991/89991 co-relation queries the response was YES. [2024-06-28 01:35:10,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20805 conditions, 4676 events. 2165/4676 cut-off events. For 89991/89991 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37885 event pairs, 737 based on Foata normal form. 2/4375 useless extension candidates. Maximal degree in co-relation 20650. Up to 3078 conditions per place. [2024-06-28 01:35:10,901 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 282 selfloop transitions, 58 changer transitions 0/349 dead transitions. [2024-06-28 01:35:10,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 349 transitions, 4703 flow [2024-06-28 01:35:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:35:10,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:35:10,903 INFO L175 Difference]: Start difference. First operand has 340 places, 311 transitions, 3683 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:35:10,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 349 transitions, 4703 flow [2024-06-28 01:35:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 349 transitions, 4583 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:11,464 INFO L231 Difference]: Finished difference. Result has 342 places, 312 transitions, 3707 flow [2024-06-28 01:35:11,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3707, PETRI_PLACES=342, PETRI_TRANSITIONS=312} [2024-06-28 01:35:11,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:35:11,465 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 312 transitions, 3707 flow [2024-06-28 01:35:11,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:11,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:11,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:35:11,465 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:11,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 600429369, now seen corresponding path program 1 times [2024-06-28 01:35:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312590398] [2024-06-28 01:35:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312590398] [2024-06-28 01:35:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312590398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658051804] [2024-06-28 01:35:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:12,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:12,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 312 transitions, 3707 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:12,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:12,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:12,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:13,857 INFO L124 PetriNetUnfolderBase]: 2219/4866 cut-off events. [2024-06-28 01:35:13,858 INFO L125 PetriNetUnfolderBase]: For 119291/119291 co-relation queries the response was YES. [2024-06-28 01:35:13,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21467 conditions, 4866 events. 2219/4866 cut-off events. For 119291/119291 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40084 event pairs, 788 based on Foata normal form. 8/4540 useless extension candidates. Maximal degree in co-relation 21311. Up to 3745 conditions per place. [2024-06-28 01:35:13,897 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 275 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-28 01:35:13,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 339 transitions, 4491 flow [2024-06-28 01:35:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-28 01:35:13,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261954261954262 [2024-06-28 01:35:13,898 INFO L175 Difference]: Start difference. First operand has 342 places, 312 transitions, 3707 flow. Second operand 13 states and 205 transitions. [2024-06-28 01:35:13,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 339 transitions, 4491 flow [2024-06-28 01:35:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 339 transitions, 4357 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:14,429 INFO L231 Difference]: Finished difference. Result has 346 places, 312 transitions, 3691 flow [2024-06-28 01:35:14,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3691, PETRI_PLACES=346, PETRI_TRANSITIONS=312} [2024-06-28 01:35:14,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 01:35:14,430 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 312 transitions, 3691 flow [2024-06-28 01:35:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:14,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:14,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:14,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:35:14,431 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:14,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2068286247, now seen corresponding path program 2 times [2024-06-28 01:35:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:14,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255184221] [2024-06-28 01:35:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:14,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:15,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255184221] [2024-06-28 01:35:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255184221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:15,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:15,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:15,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203627440] [2024-06-28 01:35:15,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:15,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:15,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 312 transitions, 3691 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:15,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:15,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:15,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:16,406 INFO L124 PetriNetUnfolderBase]: 2320/5110 cut-off events. [2024-06-28 01:35:16,406 INFO L125 PetriNetUnfolderBase]: For 146299/146299 co-relation queries the response was YES. [2024-06-28 01:35:16,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 5110 events. 2320/5110 cut-off events. For 146299/146299 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42712 event pairs, 852 based on Foata normal form. 6/4779 useless extension candidates. Maximal degree in co-relation 22678. Up to 3449 conditions per place. [2024-06-28 01:35:16,460 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 285 selfloop transitions, 55 changer transitions 0/349 dead transitions. [2024-06-28 01:35:16,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 349 transitions, 4757 flow [2024-06-28 01:35:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:35:16,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:35:16,461 INFO L175 Difference]: Start difference. First operand has 346 places, 312 transitions, 3691 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:35:16,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 349 transitions, 4757 flow [2024-06-28 01:35:17,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 349 transitions, 4653 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:35:17,517 INFO L231 Difference]: Finished difference. Result has 347 places, 312 transitions, 3700 flow [2024-06-28 01:35:17,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3700, PETRI_PLACES=347, PETRI_TRANSITIONS=312} [2024-06-28 01:35:17,517 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-28 01:35:17,517 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 312 transitions, 3700 flow [2024-06-28 01:35:17,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:17,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:35:17,518 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:17,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2068276017, now seen corresponding path program 3 times [2024-06-28 01:35:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796745200] [2024-06-28 01:35:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:18,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796745200] [2024-06-28 01:35:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796745200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:18,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:18,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:18,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300784176] [2024-06-28 01:35:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:18,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:18,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:18,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 312 transitions, 3700 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:18,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:18,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:18,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:19,889 INFO L124 PetriNetUnfolderBase]: 2339/5173 cut-off events. [2024-06-28 01:35:19,889 INFO L125 PetriNetUnfolderBase]: For 124562/124562 co-relation queries the response was YES. [2024-06-28 01:35:19,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22442 conditions, 5173 events. 2339/5173 cut-off events. For 124562/124562 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43547 event pairs, 882 based on Foata normal form. 8/4831 useless extension candidates. Maximal degree in co-relation 22284. Up to 3843 conditions per place. [2024-06-28 01:35:19,930 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 277 selfloop transitions, 62 changer transitions 0/348 dead transitions. [2024-06-28 01:35:19,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 348 transitions, 4598 flow [2024-06-28 01:35:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-28 01:35:19,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386694386694387 [2024-06-28 01:35:19,930 INFO L175 Difference]: Start difference. First operand has 347 places, 312 transitions, 3700 flow. Second operand 13 states and 211 transitions. [2024-06-28 01:35:19,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 348 transitions, 4598 flow [2024-06-28 01:35:20,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 348 transitions, 4481 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:20,620 INFO L231 Difference]: Finished difference. Result has 350 places, 317 transitions, 3794 flow [2024-06-28 01:35:20,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3794, PETRI_PLACES=350, PETRI_TRANSITIONS=317} [2024-06-28 01:35:20,621 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-28 01:35:20,621 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 317 transitions, 3794 flow [2024-06-28 01:35:20,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:20,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:20,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:35:20,621 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:20,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1195293653, now seen corresponding path program 12 times [2024-06-28 01:35:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491069081] [2024-06-28 01:35:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491069081] [2024-06-28 01:35:21,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491069081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:21,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:21,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371196538] [2024-06-28 01:35:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:21,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:21,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:21,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:21,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:21,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 317 transitions, 3794 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:21,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:21,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:22,564 INFO L124 PetriNetUnfolderBase]: 2356/5210 cut-off events. [2024-06-28 01:35:22,564 INFO L125 PetriNetUnfolderBase]: For 100491/100491 co-relation queries the response was YES. [2024-06-28 01:35:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22740 conditions, 5210 events. 2356/5210 cut-off events. For 100491/100491 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43902 event pairs, 861 based on Foata normal form. 2/4860 useless extension candidates. Maximal degree in co-relation 22581. Up to 3804 conditions per place. [2024-06-28 01:35:22,618 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 252 selfloop transitions, 86 changer transitions 0/347 dead transitions. [2024-06-28 01:35:22,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 347 transitions, 4659 flow [2024-06-28 01:35:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:35:22,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:35:22,621 INFO L175 Difference]: Start difference. First operand has 350 places, 317 transitions, 3794 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:35:22,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 347 transitions, 4659 flow [2024-06-28 01:35:23,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 347 transitions, 4540 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:23,455 INFO L231 Difference]: Finished difference. Result has 352 places, 321 transitions, 3953 flow [2024-06-28 01:35:23,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3953, PETRI_PLACES=352, PETRI_TRANSITIONS=321} [2024-06-28 01:35:23,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 01:35:23,455 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 321 transitions, 3953 flow [2024-06-28 01:35:23,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:23,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:23,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:35:23,456 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:23,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2092225527, now seen corresponding path program 13 times [2024-06-28 01:35:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33059001] [2024-06-28 01:35:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:24,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:24,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33059001] [2024-06-28 01:35:24,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33059001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:24,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:24,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:24,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897752567] [2024-06-28 01:35:24,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:24,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:24,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:24,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 321 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:24,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:24,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:24,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:25,557 INFO L124 PetriNetUnfolderBase]: 2396/5290 cut-off events. [2024-06-28 01:35:25,557 INFO L125 PetriNetUnfolderBase]: For 105362/105362 co-relation queries the response was YES. [2024-06-28 01:35:25,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23503 conditions, 5290 events. 2396/5290 cut-off events. For 105362/105362 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44689 event pairs, 897 based on Foata normal form. 2/4938 useless extension candidates. Maximal degree in co-relation 23342. Up to 3894 conditions per place. [2024-06-28 01:35:25,613 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 80 changer transitions 0/352 dead transitions. [2024-06-28 01:35:25,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 352 transitions, 4848 flow [2024-06-28 01:35:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:35:25,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:35:25,614 INFO L175 Difference]: Start difference. First operand has 352 places, 321 transitions, 3953 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:35:25,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 352 transitions, 4848 flow [2024-06-28 01:35:26,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 352 transitions, 4673 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:26,455 INFO L231 Difference]: Finished difference. Result has 359 places, 326 transitions, 4064 flow [2024-06-28 01:35:26,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=359, PETRI_TRANSITIONS=326} [2024-06-28 01:35:26,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-28 01:35:26,455 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 326 transitions, 4064 flow [2024-06-28 01:35:26,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:26,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:26,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:35:26,456 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:26,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash -506447753, now seen corresponding path program 14 times [2024-06-28 01:35:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:26,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630286099] [2024-06-28 01:35:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:27,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:27,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630286099] [2024-06-28 01:35:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630286099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:27,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755677790] [2024-06-28 01:35:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:27,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:27,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:27,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 326 transitions, 4064 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:27,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:27,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:27,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:28,413 INFO L124 PetriNetUnfolderBase]: 2436/5355 cut-off events. [2024-06-28 01:35:28,413 INFO L125 PetriNetUnfolderBase]: For 106754/106754 co-relation queries the response was YES. [2024-06-28 01:35:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23891 conditions, 5355 events. 2436/5355 cut-off events. For 106754/106754 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 45366 event pairs, 913 based on Foata normal form. 2/5004 useless extension candidates. Maximal degree in co-relation 23727. Up to 3963 conditions per place. [2024-06-28 01:35:28,468 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 86 changer transitions 0/358 dead transitions. [2024-06-28 01:35:28,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 358 transitions, 4960 flow [2024-06-28 01:35:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:35:28,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:35:28,470 INFO L175 Difference]: Start difference. First operand has 359 places, 326 transitions, 4064 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:35:28,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 358 transitions, 4960 flow [2024-06-28 01:35:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 358 transitions, 4793 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:29,223 INFO L231 Difference]: Finished difference. Result has 365 places, 332 transitions, 4175 flow [2024-06-28 01:35:29,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3900, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4175, PETRI_PLACES=365, PETRI_TRANSITIONS=332} [2024-06-28 01:35:29,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 01:35:29,224 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 332 transitions, 4175 flow [2024-06-28 01:35:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:29,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:29,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:35:29,224 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:29,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -699261389, now seen corresponding path program 15 times [2024-06-28 01:35:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297947315] [2024-06-28 01:35:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297947315] [2024-06-28 01:35:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297947315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843555125] [2024-06-28 01:35:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:29,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:30,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:30,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 332 transitions, 4175 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:30,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:30,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:30,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:31,263 INFO L124 PetriNetUnfolderBase]: 2453/5420 cut-off events. [2024-06-28 01:35:31,263 INFO L125 PetriNetUnfolderBase]: For 108033/108033 co-relation queries the response was YES. [2024-06-28 01:35:31,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24162 conditions, 5420 events. 2453/5420 cut-off events. For 108033/108033 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46107 event pairs, 926 based on Foata normal form. 2/5060 useless extension candidates. Maximal degree in co-relation 23996. Up to 3994 conditions per place. [2024-06-28 01:35:31,311 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 264 selfloop transitions, 87 changer transitions 0/360 dead transitions. [2024-06-28 01:35:31,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 360 transitions, 5035 flow [2024-06-28 01:35:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:35:31,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:35:31,312 INFO L175 Difference]: Start difference. First operand has 365 places, 332 transitions, 4175 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:35:31,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 360 transitions, 5035 flow [2024-06-28 01:35:32,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 360 transitions, 4862 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:32,090 INFO L231 Difference]: Finished difference. Result has 369 places, 334 transitions, 4242 flow [2024-06-28 01:35:32,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4242, PETRI_PLACES=369, PETRI_TRANSITIONS=334} [2024-06-28 01:35:32,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 01:35:32,090 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 334 transitions, 4242 flow [2024-06-28 01:35:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:32,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:32,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:35:32,091 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:32,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1864151397, now seen corresponding path program 16 times [2024-06-28 01:35:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170838691] [2024-06-28 01:35:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:32,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:32,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170838691] [2024-06-28 01:35:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170838691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:32,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661971589] [2024-06-28 01:35:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:33,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:33,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 334 transitions, 4242 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:33,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:33,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:33,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:34,131 INFO L124 PetriNetUnfolderBase]: 2470/5451 cut-off events. [2024-06-28 01:35:34,131 INFO L125 PetriNetUnfolderBase]: For 109068/109068 co-relation queries the response was YES. [2024-06-28 01:35:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24304 conditions, 5451 events. 2470/5451 cut-off events. For 109068/109068 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 46431 event pairs, 926 based on Foata normal form. 2/5097 useless extension candidates. Maximal degree in co-relation 24139. Up to 3775 conditions per place. [2024-06-28 01:35:34,190 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 264 selfloop transitions, 92 changer transitions 0/365 dead transitions. [2024-06-28 01:35:34,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 365 transitions, 5098 flow [2024-06-28 01:35:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:35:34,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 01:35:34,191 INFO L175 Difference]: Start difference. First operand has 369 places, 334 transitions, 4242 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:35:34,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 365 transitions, 5098 flow [2024-06-28 01:35:34,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 365 transitions, 4952 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:34,984 INFO L231 Difference]: Finished difference. Result has 375 places, 335 transitions, 4318 flow [2024-06-28 01:35:34,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4318, PETRI_PLACES=375, PETRI_TRANSITIONS=335} [2024-06-28 01:35:34,985 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-28 01:35:34,985 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 335 transitions, 4318 flow [2024-06-28 01:35:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:34,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:34,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:34,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:35:34,985 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:34,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:34,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1210706661, now seen corresponding path program 17 times [2024-06-28 01:35:34,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238812935] [2024-06-28 01:35:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238812935] [2024-06-28 01:35:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238812935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731837712] [2024-06-28 01:35:35,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:35,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:35,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:35,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 335 transitions, 4318 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:35,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:35,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:35,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:37,071 INFO L124 PetriNetUnfolderBase]: 2510/5510 cut-off events. [2024-06-28 01:35:37,071 INFO L125 PetriNetUnfolderBase]: For 112069/112069 co-relation queries the response was YES. [2024-06-28 01:35:37,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25002 conditions, 5510 events. 2510/5510 cut-off events. For 112069/112069 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 46979 event pairs, 975 based on Foata normal form. 2/5152 useless extension candidates. Maximal degree in co-relation 24835. Up to 4094 conditions per place. [2024-06-28 01:35:37,130 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 82 changer transitions 0/365 dead transitions. [2024-06-28 01:35:37,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 365 transitions, 5227 flow [2024-06-28 01:35:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:35:37,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:35:37,131 INFO L175 Difference]: Start difference. First operand has 375 places, 335 transitions, 4318 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:35:37,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 365 transitions, 5227 flow [2024-06-28 01:35:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 365 transitions, 5011 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:37,899 INFO L231 Difference]: Finished difference. Result has 377 places, 339 transitions, 4371 flow [2024-06-28 01:35:37,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4106, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4371, PETRI_PLACES=377, PETRI_TRANSITIONS=339} [2024-06-28 01:35:37,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 01:35:37,899 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 339 transitions, 4371 flow [2024-06-28 01:35:37,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:37,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:37,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:35:37,900 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:37,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash -512876843, now seen corresponding path program 18 times [2024-06-28 01:35:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:37,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136044329] [2024-06-28 01:35:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136044329] [2024-06-28 01:35:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136044329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169279735] [2024-06-28 01:35:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:38,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:38,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:38,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 339 transitions, 4371 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:38,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:38,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:38,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:40,065 INFO L124 PetriNetUnfolderBase]: 2527/5578 cut-off events. [2024-06-28 01:35:40,065 INFO L125 PetriNetUnfolderBase]: For 114610/114610 co-relation queries the response was YES. [2024-06-28 01:35:40,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25098 conditions, 5578 events. 2527/5578 cut-off events. For 114610/114610 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 47764 event pairs, 945 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 24930. Up to 4042 conditions per place. [2024-06-28 01:35:40,127 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 272 selfloop transitions, 89 changer transitions 0/370 dead transitions. [2024-06-28 01:35:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 370 transitions, 5241 flow [2024-06-28 01:35:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:35:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:35:40,128 INFO L175 Difference]: Start difference. First operand has 377 places, 339 transitions, 4371 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:35:40,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 370 transitions, 5241 flow [2024-06-28 01:35:41,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 370 transitions, 5055 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:41,044 INFO L231 Difference]: Finished difference. Result has 381 places, 340 transitions, 4405 flow [2024-06-28 01:35:41,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4405, PETRI_PLACES=381, PETRI_TRANSITIONS=340} [2024-06-28 01:35:41,044 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 01:35:41,045 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 340 transitions, 4405 flow [2024-06-28 01:35:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:41,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:41,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:35:41,045 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:41,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash -683579273, now seen corresponding path program 19 times [2024-06-28 01:35:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463200035] [2024-06-28 01:35:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463200035] [2024-06-28 01:35:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463200035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:41,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573946359] [2024-06-28 01:35:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:41,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:41,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:41,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 340 transitions, 4405 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:41,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:41,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:41,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:43,134 INFO L124 PetriNetUnfolderBase]: 2548/5579 cut-off events. [2024-06-28 01:35:43,135 INFO L125 PetriNetUnfolderBase]: For 116010/116010 co-relation queries the response was YES. [2024-06-28 01:35:43,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25338 conditions, 5579 events. 2548/5579 cut-off events. For 116010/116010 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 47674 event pairs, 941 based on Foata normal form. 2/5234 useless extension candidates. Maximal degree in co-relation 25170. Up to 3429 conditions per place. [2024-06-28 01:35:43,186 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 100 changer transitions 0/377 dead transitions. [2024-06-28 01:35:43,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 377 transitions, 5551 flow [2024-06-28 01:35:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:35:43,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-28 01:35:43,187 INFO L175 Difference]: Start difference. First operand has 381 places, 340 transitions, 4405 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:35:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 377 transitions, 5551 flow [2024-06-28 01:35:44,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 377 transitions, 5341 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:44,113 INFO L231 Difference]: Finished difference. Result has 383 places, 342 transitions, 4477 flow [2024-06-28 01:35:44,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4195, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4477, PETRI_PLACES=383, PETRI_TRANSITIONS=342} [2024-06-28 01:35:44,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 01:35:44,114 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 342 transitions, 4477 flow [2024-06-28 01:35:44,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:44,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:44,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:44,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:35:44,114 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:44,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1204277571, now seen corresponding path program 20 times [2024-06-28 01:35:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185423890] [2024-06-28 01:35:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:44,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:44,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185423890] [2024-06-28 01:35:44,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185423890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:44,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:44,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:44,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21016452] [2024-06-28 01:35:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:44,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:44,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:45,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:45,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 342 transitions, 4477 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:45,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:45,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:45,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:46,269 INFO L124 PetriNetUnfolderBase]: 2565/5646 cut-off events. [2024-06-28 01:35:46,269 INFO L125 PetriNetUnfolderBase]: For 118885/118885 co-relation queries the response was YES. [2024-06-28 01:35:46,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25716 conditions, 5646 events. 2565/5646 cut-off events. For 118885/118885 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48423 event pairs, 997 based on Foata normal form. 2/5282 useless extension candidates. Maximal degree in co-relation 25547. Up to 4036 conditions per place. [2024-06-28 01:35:46,334 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 281 selfloop transitions, 84 changer transitions 0/374 dead transitions. [2024-06-28 01:35:46,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 374 transitions, 5569 flow [2024-06-28 01:35:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:35:46,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-28 01:35:46,335 INFO L175 Difference]: Start difference. First operand has 383 places, 342 transitions, 4477 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:35:46,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 374 transitions, 5569 flow [2024-06-28 01:35:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 374 transitions, 5401 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:47,302 INFO L231 Difference]: Finished difference. Result has 387 places, 343 transitions, 4521 flow [2024-06-28 01:35:47,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4521, PETRI_PLACES=387, PETRI_TRANSITIONS=343} [2024-06-28 01:35:47,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-28 01:35:47,302 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 343 transitions, 4521 flow [2024-06-28 01:35:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:47,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:47,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:35:47,303 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:47,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1432351701, now seen corresponding path program 21 times [2024-06-28 01:35:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630666464] [2024-06-28 01:35:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630666464] [2024-06-28 01:35:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630666464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:48,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877678066] [2024-06-28 01:35:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:48,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:48,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:48,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 343 transitions, 4521 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:48,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:48,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:49,309 INFO L124 PetriNetUnfolderBase]: 2562/5669 cut-off events. [2024-06-28 01:35:49,309 INFO L125 PetriNetUnfolderBase]: For 104709/104709 co-relation queries the response was YES. [2024-06-28 01:35:49,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25357 conditions, 5669 events. 2562/5669 cut-off events. For 104709/104709 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48775 event pairs, 999 based on Foata normal form. 2/5295 useless extension candidates. Maximal degree in co-relation 25186. Up to 4190 conditions per place. [2024-06-28 01:35:49,369 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 83 changer transitions 0/370 dead transitions. [2024-06-28 01:35:49,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 370 transitions, 5375 flow [2024-06-28 01:35:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:35:49,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:35:49,370 INFO L175 Difference]: Start difference. First operand has 387 places, 343 transitions, 4521 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:35:49,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 370 transitions, 5375 flow [2024-06-28 01:35:50,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 370 transitions, 4849 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-06-28 01:35:50,063 INFO L231 Difference]: Finished difference. Result has 385 places, 344 transitions, 4199 flow [2024-06-28 01:35:50,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4199, PETRI_PLACES=385, PETRI_TRANSITIONS=344} [2024-06-28 01:35:50,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-28 01:35:50,064 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 344 transitions, 4199 flow [2024-06-28 01:35:50,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:50,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:50,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:50,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:35:50,064 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:50,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1440939879, now seen corresponding path program 4 times [2024-06-28 01:35:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002527428] [2024-06-28 01:35:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:50,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:50,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002527428] [2024-06-28 01:35:50,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002527428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:50,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:50,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013171695] [2024-06-28 01:35:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:50,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:50,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:51,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:51,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 344 transitions, 4199 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:51,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:51,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:51,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:52,302 INFO L124 PetriNetUnfolderBase]: 2663/5902 cut-off events. [2024-06-28 01:35:52,302 INFO L125 PetriNetUnfolderBase]: For 168041/168041 co-relation queries the response was YES. [2024-06-28 01:35:52,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25527 conditions, 5902 events. 2663/5902 cut-off events. For 168041/168041 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 51468 event pairs, 1062 based on Foata normal form. 6/5529 useless extension candidates. Maximal degree in co-relation 25359. Up to 3976 conditions per place. [2024-06-28 01:35:52,365 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 87 changer transitions 0/378 dead transitions. [2024-06-28 01:35:52,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 378 transitions, 5323 flow [2024-06-28 01:35:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:35:52,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:35:52,366 INFO L175 Difference]: Start difference. First operand has 385 places, 344 transitions, 4199 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:35:52,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 378 transitions, 5323 flow [2024-06-28 01:35:53,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 378 transitions, 5094 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:53,345 INFO L231 Difference]: Finished difference. Result has 388 places, 344 transitions, 4147 flow [2024-06-28 01:35:53,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4147, PETRI_PLACES=388, PETRI_TRANSITIONS=344} [2024-06-28 01:35:53,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 01:35:53,345 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 344 transitions, 4147 flow [2024-06-28 01:35:53,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:53,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:53,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:53,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:35:53,346 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:53,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1440929649, now seen corresponding path program 5 times [2024-06-28 01:35:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:53,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614835219] [2024-06-28 01:35:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:54,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614835219] [2024-06-28 01:35:54,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614835219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:54,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:54,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737429559] [2024-06-28 01:35:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:54,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:54,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 344 transitions, 4147 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:54,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:54,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:54,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:55,725 INFO L124 PetriNetUnfolderBase]: 2676/6000 cut-off events. [2024-06-28 01:35:55,726 INFO L125 PetriNetUnfolderBase]: For 139031/139031 co-relation queries the response was YES. [2024-06-28 01:35:55,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24586 conditions, 6000 events. 2676/6000 cut-off events. For 139031/139031 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52769 event pairs, 1076 based on Foata normal form. 8/5606 useless extension candidates. Maximal degree in co-relation 24418. Up to 4327 conditions per place. [2024-06-28 01:35:55,789 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 91 changer transitions 0/376 dead transitions. [2024-06-28 01:35:55,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 376 transitions, 5046 flow [2024-06-28 01:35:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:35:55,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-06-28 01:35:55,790 INFO L175 Difference]: Start difference. First operand has 388 places, 344 transitions, 4147 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:35:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 376 transitions, 5046 flow [2024-06-28 01:35:56,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 376 transitions, 4869 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:56,728 INFO L231 Difference]: Finished difference. Result has 391 places, 347 transitions, 4189 flow [2024-06-28 01:35:56,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4189, PETRI_PLACES=391, PETRI_TRANSITIONS=347} [2024-06-28 01:35:56,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-28 01:35:56,729 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 347 transitions, 4189 flow [2024-06-28 01:35:56,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:56,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:56,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:56,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:35:56,729 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:56,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -469028171, now seen corresponding path program 6 times [2024-06-28 01:35:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306902085] [2024-06-28 01:35:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306902085] [2024-06-28 01:35:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306902085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:57,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:57,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:35:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054246753] [2024-06-28 01:35:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:57,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:35:57,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:35:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:35:57,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:57,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 347 transitions, 4189 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:57,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:57,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:57,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:59,205 INFO L124 PetriNetUnfolderBase]: 2814/6332 cut-off events. [2024-06-28 01:35:59,205 INFO L125 PetriNetUnfolderBase]: For 176194/176194 co-relation queries the response was YES. [2024-06-28 01:35:59,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26681 conditions, 6332 events. 2814/6332 cut-off events. For 176194/176194 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 56587 event pairs, 1149 based on Foata normal form. 6/5924 useless extension candidates. Maximal degree in co-relation 26512. Up to 4296 conditions per place. [2024-06-28 01:35:59,272 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 236 selfloop transitions, 140 changer transitions 0/385 dead transitions. [2024-06-28 01:35:59,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 385 transitions, 5345 flow [2024-06-28 01:35:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-06-28 01:35:59,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656964656964657 [2024-06-28 01:35:59,273 INFO L175 Difference]: Start difference. First operand has 391 places, 347 transitions, 4189 flow. Second operand 13 states and 224 transitions. [2024-06-28 01:35:59,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 385 transitions, 5345 flow [2024-06-28 01:36:00,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 385 transitions, 5167 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:00,595 INFO L231 Difference]: Finished difference. Result has 394 places, 347 transitions, 4294 flow [2024-06-28 01:36:00,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4011, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4294, PETRI_PLACES=394, PETRI_TRANSITIONS=347} [2024-06-28 01:36:00,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 01:36:00,595 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 347 transitions, 4294 flow [2024-06-28 01:36:00,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:00,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:00,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:00,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:36:00,595 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:00,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:00,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1203871601, now seen corresponding path program 7 times [2024-06-28 01:36:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157317721] [2024-06-28 01:36:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:01,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:01,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157317721] [2024-06-28 01:36:01,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157317721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:01,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626574369] [2024-06-28 01:36:01,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:01,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:01,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 347 transitions, 4294 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:01,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:01,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:01,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:03,104 INFO L124 PetriNetUnfolderBase]: 2891/6538 cut-off events. [2024-06-28 01:36:03,104 INFO L125 PetriNetUnfolderBase]: For 193794/193794 co-relation queries the response was YES. [2024-06-28 01:36:03,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27522 conditions, 6538 events. 2891/6538 cut-off events. For 193794/193794 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 59062 event pairs, 1239 based on Foata normal form. 8/6119 useless extension candidates. Maximal degree in co-relation 27352. Up to 4767 conditions per place. [2024-06-28 01:36:03,175 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 101 changer transitions 0/379 dead transitions. [2024-06-28 01:36:03,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 379 transitions, 5199 flow [2024-06-28 01:36:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-28 01:36:03,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-28 01:36:03,176 INFO L175 Difference]: Start difference. First operand has 394 places, 347 transitions, 4294 flow. Second operand 13 states and 215 transitions. [2024-06-28 01:36:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 379 transitions, 5199 flow [2024-06-28 01:36:04,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 379 transitions, 4921 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:04,252 INFO L231 Difference]: Finished difference. Result has 397 places, 350 transitions, 4255 flow [2024-06-28 01:36:04,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4255, PETRI_PLACES=397, PETRI_TRANSITIONS=350} [2024-06-28 01:36:04,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-28 01:36:04,253 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 350 transitions, 4255 flow [2024-06-28 01:36:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:04,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:04,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:04,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:36:04,254 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:04,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2100803475, now seen corresponding path program 8 times [2024-06-28 01:36:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020154342] [2024-06-28 01:36:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:05,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020154342] [2024-06-28 01:36:05,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020154342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:05,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:05,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371152016] [2024-06-28 01:36:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:05,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:05,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 350 transitions, 4255 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:05,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:05,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:05,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:06,778 INFO L124 PetriNetUnfolderBase]: 2904/6572 cut-off events. [2024-06-28 01:36:06,778 INFO L125 PetriNetUnfolderBase]: For 149811/149811 co-relation queries the response was YES. [2024-06-28 01:36:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26734 conditions, 6572 events. 2904/6572 cut-off events. For 149811/149811 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 59359 event pairs, 1224 based on Foata normal form. 8/6149 useless extension candidates. Maximal degree in co-relation 26563. Up to 4784 conditions per place. [2024-06-28 01:36:06,843 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 97 changer transitions 0/382 dead transitions. [2024-06-28 01:36:06,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 382 transitions, 5166 flow [2024-06-28 01:36:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-28 01:36:06,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490644490644491 [2024-06-28 01:36:06,844 INFO L175 Difference]: Start difference. First operand has 397 places, 350 transitions, 4255 flow. Second operand 13 states and 216 transitions. [2024-06-28 01:36:06,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 382 transitions, 5166 flow [2024-06-28 01:36:07,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 382 transitions, 4959 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:07,780 INFO L231 Difference]: Finished difference. Result has 399 places, 353 transitions, 4279 flow [2024-06-28 01:36:07,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4279, PETRI_PLACES=399, PETRI_TRANSITIONS=353} [2024-06-28 01:36:07,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 01:36:07,780 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 353 transitions, 4279 flow [2024-06-28 01:36:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:07,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:07,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:07,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:36:07,781 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:07,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1203881831, now seen corresponding path program 9 times [2024-06-28 01:36:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:07,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547127620] [2024-06-28 01:36:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547127620] [2024-06-28 01:36:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547127620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:08,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018443596] [2024-06-28 01:36:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:08,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:08,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:08,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:08,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:08,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 353 transitions, 4279 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:08,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:08,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:08,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:10,183 INFO L124 PetriNetUnfolderBase]: 2941/6673 cut-off events. [2024-06-28 01:36:10,183 INFO L125 PetriNetUnfolderBase]: For 140089/140089 co-relation queries the response was YES. [2024-06-28 01:36:10,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27147 conditions, 6673 events. 2941/6673 cut-off events. For 140089/140089 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60602 event pairs, 1214 based on Foata normal form. 6/6245 useless extension candidates. Maximal degree in co-relation 26976. Up to 4585 conditions per place. [2024-06-28 01:36:10,248 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 277 selfloop transitions, 101 changer transitions 0/387 dead transitions. [2024-06-28 01:36:10,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 387 transitions, 5213 flow [2024-06-28 01:36:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:36:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:36:10,249 INFO L175 Difference]: Start difference. First operand has 399 places, 353 transitions, 4279 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:36:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 387 transitions, 5213 flow [2024-06-28 01:36:11,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 387 transitions, 5011 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:11,246 INFO L231 Difference]: Finished difference. Result has 400 places, 353 transitions, 4282 flow [2024-06-28 01:36:11,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4282, PETRI_PLACES=400, PETRI_TRANSITIONS=353} [2024-06-28 01:36:11,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 01:36:11,246 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 353 transitions, 4282 flow [2024-06-28 01:36:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:11,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:11,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:36:11,247 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:11,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1956354157, now seen corresponding path program 10 times [2024-06-28 01:36:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:11,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497258211] [2024-06-28 01:36:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:11,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497258211] [2024-06-28 01:36:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497258211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:12,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:12,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:12,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846516095] [2024-06-28 01:36:12,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:12,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:12,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:12,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:12,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 353 transitions, 4282 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:12,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:12,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:12,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:13,947 INFO L124 PetriNetUnfolderBase]: 2995/6847 cut-off events. [2024-06-28 01:36:13,947 INFO L125 PetriNetUnfolderBase]: For 156949/156949 co-relation queries the response was YES. [2024-06-28 01:36:13,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27699 conditions, 6847 events. 2995/6847 cut-off events. For 156949/156949 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 62866 event pairs, 1368 based on Foata normal form. 8/6406 useless extension candidates. Maximal degree in co-relation 27528. Up to 5274 conditions per place. [2024-06-28 01:36:14,014 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 350 selfloop transitions, 24 changer transitions 0/383 dead transitions. [2024-06-28 01:36:14,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 383 transitions, 5172 flow [2024-06-28 01:36:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-28 01:36:14,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411642411642414 [2024-06-28 01:36:14,015 INFO L175 Difference]: Start difference. First operand has 400 places, 353 transitions, 4282 flow. Second operand 13 states and 204 transitions. [2024-06-28 01:36:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 383 transitions, 5172 flow [2024-06-28 01:36:14,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 383 transitions, 4971 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:14,988 INFO L231 Difference]: Finished difference. Result has 403 places, 354 transitions, 4143 flow [2024-06-28 01:36:14,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4143, PETRI_PLACES=403, PETRI_TRANSITIONS=354} [2024-06-28 01:36:14,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-28 01:36:14,989 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 354 transitions, 4143 flow [2024-06-28 01:36:14,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:14,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:14,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:36:14,989 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:14,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1602080887, now seen corresponding path program 11 times [2024-06-28 01:36:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517469078] [2024-06-28 01:36:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517469078] [2024-06-28 01:36:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517469078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:15,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609436843] [2024-06-28 01:36:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:16,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:16,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:16,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 354 transitions, 4143 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:16,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:16,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:16,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:17,702 INFO L124 PetriNetUnfolderBase]: 3096/7072 cut-off events. [2024-06-28 01:36:17,702 INFO L125 PetriNetUnfolderBase]: For 196151/196151 co-relation queries the response was YES. [2024-06-28 01:36:17,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29307 conditions, 7072 events. 3096/7072 cut-off events. For 196151/196151 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 65370 event pairs, 1409 based on Foata normal form. 6/6629 useless extension candidates. Maximal degree in co-relation 29135. Up to 4983 conditions per place. [2024-06-28 01:36:17,773 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 27 changer transitions 0/394 dead transitions. [2024-06-28 01:36:17,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 394 transitions, 5335 flow [2024-06-28 01:36:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-28 01:36:17,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-28 01:36:17,774 INFO L175 Difference]: Start difference. First operand has 403 places, 354 transitions, 4143 flow. Second operand 13 states and 215 transitions. [2024-06-28 01:36:17,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 394 transitions, 5335 flow [2024-06-28 01:36:19,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 394 transitions, 5289 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:19,210 INFO L231 Difference]: Finished difference. Result has 405 places, 354 transitions, 4154 flow [2024-06-28 01:36:19,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=405, PETRI_TRANSITIONS=354} [2024-06-28 01:36:19,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 01:36:19,210 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 354 transitions, 4154 flow [2024-06-28 01:36:19,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:19,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:19,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:36:19,210 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:19,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1614045337, now seen corresponding path program 12 times [2024-06-28 01:36:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:19,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202393538] [2024-06-28 01:36:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:20,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:20,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202393538] [2024-06-28 01:36:20,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202393538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:20,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:20,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800339346] [2024-06-28 01:36:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:20,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:20,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:20,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 354 transitions, 4154 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:20,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:20,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:22,023 INFO L124 PetriNetUnfolderBase]: 3177/7331 cut-off events. [2024-06-28 01:36:22,024 INFO L125 PetriNetUnfolderBase]: For 238935/238935 co-relation queries the response was YES. [2024-06-28 01:36:22,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30915 conditions, 7331 events. 3177/7331 cut-off events. For 238935/238935 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 68829 event pairs, 1501 based on Foata normal form. 6/6865 useless extension candidates. Maximal degree in co-relation 30742. Up to 5526 conditions per place. [2024-06-28 01:36:22,103 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 354 selfloop transitions, 27 changer transitions 0/390 dead transitions. [2024-06-28 01:36:22,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 390 transitions, 5326 flow [2024-06-28 01:36:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-06-28 01:36:22,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407484407484408 [2024-06-28 01:36:22,104 INFO L175 Difference]: Start difference. First operand has 405 places, 354 transitions, 4154 flow. Second operand 13 states and 212 transitions. [2024-06-28 01:36:22,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 390 transitions, 5326 flow [2024-06-28 01:36:23,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 390 transitions, 5273 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:23,466 INFO L231 Difference]: Finished difference. Result has 407 places, 354 transitions, 4158 flow [2024-06-28 01:36:23,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4158, PETRI_PLACES=407, PETRI_TRANSITIONS=354} [2024-06-28 01:36:23,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 01:36:23,467 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 354 transitions, 4158 flow [2024-06-28 01:36:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:23,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:23,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:36:23,467 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:23,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1956343927, now seen corresponding path program 13 times [2024-06-28 01:36:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:23,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773083267] [2024-06-28 01:36:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:24,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773083267] [2024-06-28 01:36:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773083267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111477838] [2024-06-28 01:36:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:24,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:24,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:24,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 354 transitions, 4158 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:24,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:24,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:26,014 INFO L124 PetriNetUnfolderBase]: 3170/7318 cut-off events. [2024-06-28 01:36:26,014 INFO L125 PetriNetUnfolderBase]: For 204736/204736 co-relation queries the response was YES. [2024-06-28 01:36:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30203 conditions, 7318 events. 3170/7318 cut-off events. For 204736/204736 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 68604 event pairs, 1494 based on Foata normal form. 6/6854 useless extension candidates. Maximal degree in co-relation 30029. Up to 5393 conditions per place. [2024-06-28 01:36:26,104 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 356 selfloop transitions, 22 changer transitions 0/387 dead transitions. [2024-06-28 01:36:26,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 387 transitions, 5086 flow [2024-06-28 01:36:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:36:26,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:36:26,105 INFO L175 Difference]: Start difference. First operand has 407 places, 354 transitions, 4158 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:36:26,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 387 transitions, 5086 flow [2024-06-28 01:36:27,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 387 transitions, 5033 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:27,812 INFO L231 Difference]: Finished difference. Result has 408 places, 354 transitions, 4152 flow [2024-06-28 01:36:27,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4152, PETRI_PLACES=408, PETRI_TRANSITIONS=354} [2024-06-28 01:36:27,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 01:36:27,812 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 354 transitions, 4152 flow [2024-06-28 01:36:27,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:27,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:27,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:27,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:36:27,812 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:27,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash -879728203, now seen corresponding path program 14 times [2024-06-28 01:36:27,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:27,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139637773] [2024-06-28 01:36:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:27,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139637773] [2024-06-28 01:36:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139637773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918281736] [2024-06-28 01:36:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:28,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:28,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 354 transitions, 4152 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:28,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:28,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:28,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:30,421 INFO L124 PetriNetUnfolderBase]: 3160/7288 cut-off events. [2024-06-28 01:36:30,421 INFO L125 PetriNetUnfolderBase]: For 170223/170223 co-relation queries the response was YES. [2024-06-28 01:36:30,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29213 conditions, 7288 events. 3160/7288 cut-off events. For 170223/170223 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 68293 event pairs, 1521 based on Foata normal form. 8/6828 useless extension candidates. Maximal degree in co-relation 29038. Up to 5627 conditions per place. [2024-06-28 01:36:30,498 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 27 changer transitions 0/383 dead transitions. [2024-06-28 01:36:30,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 383 transitions, 5036 flow [2024-06-28 01:36:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-28 01:36:30,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261954261954262 [2024-06-28 01:36:30,499 INFO L175 Difference]: Start difference. First operand has 408 places, 354 transitions, 4152 flow. Second operand 13 states and 205 transitions. [2024-06-28 01:36:30,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 383 transitions, 5036 flow [2024-06-28 01:36:31,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 383 transitions, 4993 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:31,417 INFO L231 Difference]: Finished difference. Result has 411 places, 354 transitions, 4167 flow [2024-06-28 01:36:31,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4167, PETRI_PLACES=411, PETRI_TRANSITIONS=354} [2024-06-28 01:36:31,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 01:36:31,417 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 354 transitions, 4167 flow [2024-06-28 01:36:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:31,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:31,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:36:31,418 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:31,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 37903263, now seen corresponding path program 22 times [2024-06-28 01:36:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710465349] [2024-06-28 01:36:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:32,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710465349] [2024-06-28 01:36:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710465349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:32,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:32,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697766361] [2024-06-28 01:36:32,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:32,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:32,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:32,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 354 transitions, 4167 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:32,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:32,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:32,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:33,968 INFO L124 PetriNetUnfolderBase]: 3328/7697 cut-off events. [2024-06-28 01:36:33,968 INFO L125 PetriNetUnfolderBase]: For 132905/132905 co-relation queries the response was YES. [2024-06-28 01:36:34,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30621 conditions, 7697 events. 3328/7697 cut-off events. For 132905/132905 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 73142 event pairs, 1477 based on Foata normal form. 2/7206 useless extension candidates. Maximal degree in co-relation 30445. Up to 5789 conditions per place. [2024-06-28 01:36:34,054 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 336 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2024-06-28 01:36:34,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 401 transitions, 5181 flow [2024-06-28 01:36:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:36:34,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:36:34,055 INFO L175 Difference]: Start difference. First operand has 411 places, 354 transitions, 4167 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:36:34,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 401 transitions, 5181 flow [2024-06-28 01:36:35,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 401 transitions, 5129 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:35,185 INFO L231 Difference]: Finished difference. Result has 414 places, 364 transitions, 4365 flow [2024-06-28 01:36:35,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4115, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4365, PETRI_PLACES=414, PETRI_TRANSITIONS=364} [2024-06-28 01:36:35,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-28 01:36:35,185 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 364 transitions, 4365 flow [2024-06-28 01:36:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:35,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:35,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:35,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:36:35,186 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1959484859, now seen corresponding path program 15 times [2024-06-28 01:36:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137410717] [2024-06-28 01:36:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137410717] [2024-06-28 01:36:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137410717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:36,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339608958] [2024-06-28 01:36:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:36,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:36,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 364 transitions, 4365 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:36,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:36,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:36,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:38,022 INFO L124 PetriNetUnfolderBase]: 3416/7963 cut-off events. [2024-06-28 01:36:38,022 INFO L125 PetriNetUnfolderBase]: For 178428/178428 co-relation queries the response was YES. [2024-06-28 01:36:38,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31928 conditions, 7963 events. 3416/7963 cut-off events. For 178428/178428 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 76396 event pairs, 1599 based on Foata normal form. 8/7455 useless extension candidates. Maximal degree in co-relation 31749. Up to 6030 conditions per place. [2024-06-28 01:36:38,110 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 330 selfloop transitions, 58 changer transitions 0/397 dead transitions. [2024-06-28 01:36:38,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 397 transitions, 5287 flow [2024-06-28 01:36:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-06-28 01:36:38,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451143451143454 [2024-06-28 01:36:38,111 INFO L175 Difference]: Start difference. First operand has 414 places, 364 transitions, 4365 flow. Second operand 13 states and 209 transitions. [2024-06-28 01:36:38,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 397 transitions, 5287 flow [2024-06-28 01:36:39,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 397 transitions, 5188 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:39,319 INFO L231 Difference]: Finished difference. Result has 419 places, 364 transitions, 4390 flow [2024-06-28 01:36:39,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4390, PETRI_PLACES=419, PETRI_TRANSITIONS=364} [2024-06-28 01:36:39,319 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 01:36:39,319 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 364 transitions, 4390 flow [2024-06-28 01:36:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:39,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:39,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:36:39,320 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:39,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:39,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1820768197, now seen corresponding path program 23 times [2024-06-28 01:36:39,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:39,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13782022] [2024-06-28 01:36:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:39,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:40,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:40,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13782022] [2024-06-28 01:36:40,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13782022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:40,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007172166] [2024-06-28 01:36:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:40,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:40,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:40,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 364 transitions, 4390 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:40,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:40,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:40,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:41,912 INFO L124 PetriNetUnfolderBase]: 3545/8261 cut-off events. [2024-06-28 01:36:41,913 INFO L125 PetriNetUnfolderBase]: For 125647/125647 co-relation queries the response was YES. [2024-06-28 01:36:41,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32745 conditions, 8261 events. 3545/8261 cut-off events. For 125647/125647 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 79881 event pairs, 1594 based on Foata normal form. 2/7733 useless extension candidates. Maximal degree in co-relation 32565. Up to 6124 conditions per place. [2024-06-28 01:36:42,001 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 340 selfloop transitions, 60 changer transitions 0/409 dead transitions. [2024-06-28 01:36:42,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 409 transitions, 5426 flow [2024-06-28 01:36:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:36:42,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:36:42,002 INFO L175 Difference]: Start difference. First operand has 419 places, 364 transitions, 4390 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:36:42,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 409 transitions, 5426 flow [2024-06-28 01:36:43,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 409 transitions, 5310 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:43,098 INFO L231 Difference]: Finished difference. Result has 422 places, 374 transitions, 4553 flow [2024-06-28 01:36:43,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4274, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4553, PETRI_PLACES=422, PETRI_TRANSITIONS=374} [2024-06-28 01:36:43,098 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-28 01:36:43,098 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 374 transitions, 4553 flow [2024-06-28 01:36:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:43,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:43,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:43,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:36:43,099 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:43,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -576469369, now seen corresponding path program 24 times [2024-06-28 01:36:43,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:43,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047126442] [2024-06-28 01:36:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:43,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047126442] [2024-06-28 01:36:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047126442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:43,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:43,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330554714] [2024-06-28 01:36:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:44,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:44,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 374 transitions, 4553 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:44,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:44,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:44,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:45,892 INFO L124 PetriNetUnfolderBase]: 3599/8402 cut-off events. [2024-06-28 01:36:45,892 INFO L125 PetriNetUnfolderBase]: For 114417/114417 co-relation queries the response was YES. [2024-06-28 01:36:45,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33656 conditions, 8402 events. 3599/8402 cut-off events. For 114417/114417 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 81587 event pairs, 1658 based on Foata normal form. 2/7847 useless extension candidates. Maximal degree in co-relation 33473. Up to 6352 conditions per place. [2024-06-28 01:36:45,985 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 324 selfloop transitions, 103 changer transitions 0/436 dead transitions. [2024-06-28 01:36:45,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 436 transitions, 6009 flow [2024-06-28 01:36:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:36:45,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:36:45,986 INFO L175 Difference]: Start difference. First operand has 422 places, 374 transitions, 4553 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:36:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 436 transitions, 6009 flow [2024-06-28 01:36:47,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 436 transitions, 5840 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:47,126 INFO L231 Difference]: Finished difference. Result has 429 places, 399 transitions, 5168 flow [2024-06-28 01:36:47,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5168, PETRI_PLACES=429, PETRI_TRANSITIONS=399} [2024-06-28 01:36:47,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 01:36:47,126 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 399 transitions, 5168 flow [2024-06-28 01:36:47,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:47,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:47,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:47,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:36:47,127 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:47,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash 758900451, now seen corresponding path program 16 times [2024-06-28 01:36:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:47,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515691501] [2024-06-28 01:36:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:48,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515691501] [2024-06-28 01:36:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515691501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:48,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191959878] [2024-06-28 01:36:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:48,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:48,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:48,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:48,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 399 transitions, 5168 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:48,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:48,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:48,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:50,164 INFO L124 PetriNetUnfolderBase]: 3701/8744 cut-off events. [2024-06-28 01:36:50,165 INFO L125 PetriNetUnfolderBase]: For 145845/145845 co-relation queries the response was YES. [2024-06-28 01:36:50,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34557 conditions, 8744 events. 3701/8744 cut-off events. For 145845/145845 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 86172 event pairs, 1804 based on Foata normal form. 8/8163 useless extension candidates. Maximal degree in co-relation 34368. Up to 6535 conditions per place. [2024-06-28 01:36:50,282 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 371 selfloop transitions, 50 changer transitions 0/430 dead transitions. [2024-06-28 01:36:50,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 430 transitions, 6148 flow [2024-06-28 01:36:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:36:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:36:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-06-28 01:36:50,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303534303534304 [2024-06-28 01:36:50,283 INFO L175 Difference]: Start difference. First operand has 429 places, 399 transitions, 5168 flow. Second operand 13 states and 207 transitions. [2024-06-28 01:36:50,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 430 transitions, 6148 flow [2024-06-28 01:36:51,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 430 transitions, 5937 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:51,454 INFO L231 Difference]: Finished difference. Result has 434 places, 399 transitions, 5065 flow [2024-06-28 01:36:51,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5065, PETRI_PLACES=434, PETRI_TRANSITIONS=399} [2024-06-28 01:36:51,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 01:36:51,455 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 399 transitions, 5065 flow [2024-06-28 01:36:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:51,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:51,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:51,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:36:51,455 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:51,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511985, now seen corresponding path program 1 times [2024-06-28 01:36:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365499766] [2024-06-28 01:36:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:52,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365499766] [2024-06-28 01:36:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365499766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937453633] [2024-06-28 01:36:52,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:52,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:52,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:52,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 399 transitions, 5065 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:52,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:52,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:52,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:54,571 INFO L124 PetriNetUnfolderBase]: 3738/8787 cut-off events. [2024-06-28 01:36:54,571 INFO L125 PetriNetUnfolderBase]: For 133014/133014 co-relation queries the response was YES. [2024-06-28 01:36:54,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34361 conditions, 8787 events. 3738/8787 cut-off events. For 133014/133014 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 86543 event pairs, 1616 based on Foata normal form. 6/8226 useless extension candidates. Maximal degree in co-relation 34172. Up to 5912 conditions per place. [2024-06-28 01:36:54,686 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 341 selfloop transitions, 91 changer transitions 0/441 dead transitions. [2024-06-28 01:36:54,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 441 transitions, 6083 flow [2024-06-28 01:36:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:36:54,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:36:54,687 INFO L175 Difference]: Start difference. First operand has 434 places, 399 transitions, 5065 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:36:54,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 441 transitions, 6083 flow [2024-06-28 01:36:56,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 441 transitions, 5977 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:56,024 INFO L231 Difference]: Finished difference. Result has 435 places, 399 transitions, 5149 flow [2024-06-28 01:36:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5149, PETRI_PLACES=435, PETRI_TRANSITIONS=399} [2024-06-28 01:36:56,025 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-28 01:36:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 399 transitions, 5149 flow [2024-06-28 01:36:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:56,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:56,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:36:56,025 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:56,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1776531143, now seen corresponding path program 2 times [2024-06-28 01:36:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259164220] [2024-06-28 01:36:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259164220] [2024-06-28 01:36:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259164220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274335725] [2024-06-28 01:36:56,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:56,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:57,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:36:57,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 399 transitions, 5149 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:57,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:57,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:36:57,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:59,115 INFO L124 PetriNetUnfolderBase]: 3775/8899 cut-off events. [2024-06-28 01:36:59,115 INFO L125 PetriNetUnfolderBase]: For 136699/136699 co-relation queries the response was YES. [2024-06-28 01:36:59,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35017 conditions, 8899 events. 3775/8899 cut-off events. For 136699/136699 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 87984 event pairs, 1737 based on Foata normal form. 6/8325 useless extension candidates. Maximal degree in co-relation 34828. Up to 6405 conditions per place. [2024-06-28 01:36:59,243 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 348 selfloop transitions, 80 changer transitions 0/437 dead transitions. [2024-06-28 01:36:59,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 437 transitions, 6145 flow [2024-06-28 01:36:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:36:59,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-28 01:36:59,245 INFO L175 Difference]: Start difference. First operand has 435 places, 399 transitions, 5149 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:36:59,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 437 transitions, 6145 flow [2024-06-28 01:37:00,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 437 transitions, 5969 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:00,565 INFO L231 Difference]: Finished difference. Result has 437 places, 399 transitions, 5141 flow [2024-06-28 01:37:00,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5141, PETRI_PLACES=437, PETRI_TRANSITIONS=399} [2024-06-28 01:37:00,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 01:37:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 399 transitions, 5141 flow [2024-06-28 01:37:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:37:00,567 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1433165425, now seen corresponding path program 3 times [2024-06-28 01:37:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351921269] [2024-06-28 01:37:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:01,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351921269] [2024-06-28 01:37:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351921269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133686938] [2024-06-28 01:37:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:01,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:01,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:01,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 399 transitions, 5141 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:01,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:01,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:01,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:03,668 INFO L124 PetriNetUnfolderBase]: 3812/8999 cut-off events. [2024-06-28 01:37:03,668 INFO L125 PetriNetUnfolderBase]: For 137825/137825 co-relation queries the response was YES. [2024-06-28 01:37:03,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35202 conditions, 8999 events. 3812/8999 cut-off events. For 137825/137825 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 89287 event pairs, 1864 based on Foata normal form. 6/8418 useless extension candidates. Maximal degree in co-relation 35012. Up to 6742 conditions per place. [2024-06-28 01:37:03,790 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 345 selfloop transitions, 79 changer transitions 0/433 dead transitions. [2024-06-28 01:37:03,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 433 transitions, 6115 flow [2024-06-28 01:37:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:37:03,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:37:03,791 INFO L175 Difference]: Start difference. First operand has 437 places, 399 transitions, 5141 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:37:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 433 transitions, 6115 flow [2024-06-28 01:37:05,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 433 transitions, 5961 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:05,521 INFO L231 Difference]: Finished difference. Result has 439 places, 399 transitions, 5153 flow [2024-06-28 01:37:05,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4987, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5153, PETRI_PLACES=439, PETRI_TRANSITIONS=399} [2024-06-28 01:37:05,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 01:37:05,521 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 399 transitions, 5153 flow [2024-06-28 01:37:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:05,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:05,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:37:05,522 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:05,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 229703951, now seen corresponding path program 4 times [2024-06-28 01:37:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:05,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343988215] [2024-06-28 01:37:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343988215] [2024-06-28 01:37:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343988215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:06,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:06,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508489561] [2024-06-28 01:37:06,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:06,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:06,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:06,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 399 transitions, 5153 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:06,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:06,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:06,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:09,014 INFO L124 PetriNetUnfolderBase]: 3849/9066 cut-off events. [2024-06-28 01:37:09,014 INFO L125 PetriNetUnfolderBase]: For 139260/139260 co-relation queries the response was YES. [2024-06-28 01:37:09,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35351 conditions, 9066 events. 3849/9066 cut-off events. For 139260/139260 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 90052 event pairs, 1818 based on Foata normal form. 6/8498 useless extension candidates. Maximal degree in co-relation 35160. Up to 6079 conditions per place. [2024-06-28 01:37:09,110 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 359 selfloop transitions, 77 changer transitions 0/445 dead transitions. [2024-06-28 01:37:09,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 445 transitions, 6193 flow [2024-06-28 01:37:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 01:37:09,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2024-06-28 01:37:09,111 INFO L175 Difference]: Start difference. First operand has 439 places, 399 transitions, 5153 flow. Second operand 12 states and 211 transitions. [2024-06-28 01:37:09,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 445 transitions, 6193 flow [2024-06-28 01:37:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 445 transitions, 6041 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:10,509 INFO L231 Difference]: Finished difference. Result has 441 places, 399 transitions, 5158 flow [2024-06-28 01:37:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5001, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5158, PETRI_PLACES=441, PETRI_TRANSITIONS=399} [2024-06-28 01:37:10,510 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 01:37:10,510 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 399 transitions, 5158 flow [2024-06-28 01:37:10,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:10,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:37:10,510 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1457853647, now seen corresponding path program 5 times [2024-06-28 01:37:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250170592] [2024-06-28 01:37:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250170592] [2024-06-28 01:37:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250170592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:11,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:11,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231083349] [2024-06-28 01:37:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:11,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:11,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 399 transitions, 5158 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:11,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:11,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:11,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:14,090 INFO L124 PetriNetUnfolderBase]: 3886/9147 cut-off events. [2024-06-28 01:37:14,091 INFO L125 PetriNetUnfolderBase]: For 141980/141980 co-relation queries the response was YES. [2024-06-28 01:37:14,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35812 conditions, 9147 events. 3886/9147 cut-off events. For 141980/141980 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 90902 event pairs, 1894 based on Foata normal form. 6/8629 useless extension candidates. Maximal degree in co-relation 35620. Up to 6927 conditions per place. [2024-06-28 01:37:14,186 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 404 selfloop transitions, 35 changer transitions 0/448 dead transitions. [2024-06-28 01:37:14,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 448 transitions, 6214 flow [2024-06-28 01:37:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:37:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:37:14,187 INFO L175 Difference]: Start difference. First operand has 441 places, 399 transitions, 5158 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:37:14,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 448 transitions, 6214 flow [2024-06-28 01:37:15,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 448 transitions, 6061 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:15,501 INFO L231 Difference]: Finished difference. Result has 443 places, 399 transitions, 5079 flow [2024-06-28 01:37:15,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5079, PETRI_PLACES=443, PETRI_TRANSITIONS=399} [2024-06-28 01:37:15,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 01:37:15,502 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 399 transitions, 5079 flow [2024-06-28 01:37:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:15,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:15,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:37:15,502 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:15,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1731680475, now seen corresponding path program 6 times [2024-06-28 01:37:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167475900] [2024-06-28 01:37:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167475900] [2024-06-28 01:37:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167475900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043911444] [2024-06-28 01:37:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:16,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:16,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 399 transitions, 5079 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:16,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:16,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:19,442 INFO L124 PetriNetUnfolderBase]: 3923/9256 cut-off events. [2024-06-28 01:37:19,442 INFO L125 PetriNetUnfolderBase]: For 141993/141993 co-relation queries the response was YES. [2024-06-28 01:37:19,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35809 conditions, 9256 events. 3923/9256 cut-off events. For 141993/141993 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 92514 event pairs, 1986 based on Foata normal form. 6/8663 useless extension candidates. Maximal degree in co-relation 35616. Up to 6967 conditions per place. [2024-06-28 01:37:19,550 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 348 selfloop transitions, 78 changer transitions 0/435 dead transitions. [2024-06-28 01:37:19,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 435 transitions, 6065 flow [2024-06-28 01:37:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:37:19,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-28 01:37:19,551 INFO L175 Difference]: Start difference. First operand has 443 places, 399 transitions, 5079 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:37:19,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 435 transitions, 6065 flow [2024-06-28 01:37:20,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 435 transitions, 5396 flow, removed 40 selfloop flow, removed 19 redundant places. [2024-06-28 01:37:20,981 INFO L231 Difference]: Finished difference. Result has 436 places, 399 transitions, 4569 flow [2024-06-28 01:37:20,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4569, PETRI_PLACES=436, PETRI_TRANSITIONS=399} [2024-06-28 01:37:20,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 01:37:20,982 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 399 transitions, 4569 flow [2024-06-28 01:37:20,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:20,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:37:20,982 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:20,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1145069989, now seen corresponding path program 7 times [2024-06-28 01:37:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376731424] [2024-06-28 01:37:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376731424] [2024-06-28 01:37:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376731424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:22,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521158602] [2024-06-28 01:37:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:22,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:22,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 399 transitions, 4569 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:22,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:22,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:24,783 INFO L124 PetriNetUnfolderBase]: 3960/9329 cut-off events. [2024-06-28 01:37:24,783 INFO L125 PetriNetUnfolderBase]: For 141738/141738 co-relation queries the response was YES. [2024-06-28 01:37:24,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33587 conditions, 9329 events. 3960/9329 cut-off events. For 141738/141738 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 93384 event pairs, 2001 based on Foata normal form. 6/8741 useless extension candidates. Maximal degree in co-relation 33403. Up to 6941 conditions per place. [2024-06-28 01:37:24,883 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 342 selfloop transitions, 84 changer transitions 0/435 dead transitions. [2024-06-28 01:37:24,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 435 transitions, 5555 flow [2024-06-28 01:37:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:37:24,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:37:24,884 INFO L175 Difference]: Start difference. First operand has 436 places, 399 transitions, 4569 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:37:24,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 435 transitions, 5555 flow [2024-06-28 01:37:26,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 435 transitions, 5233 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 01:37:26,299 INFO L231 Difference]: Finished difference. Result has 435 places, 399 transitions, 4420 flow [2024-06-28 01:37:26,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4420, PETRI_PLACES=435, PETRI_TRANSITIONS=399} [2024-06-28 01:37:26,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-28 01:37:26,299 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 399 transitions, 4420 flow [2024-06-28 01:37:26,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:26,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:37:26,300 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:26,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -746411083, now seen corresponding path program 8 times [2024-06-28 01:37:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:26,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191408303] [2024-06-28 01:37:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:27,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191408303] [2024-06-28 01:37:27,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191408303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:27,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:27,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:27,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108412161] [2024-06-28 01:37:27,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:27,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:27,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 399 transitions, 4420 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:27,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:27,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:27,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:29,759 INFO L124 PetriNetUnfolderBase]: 3997/9422 cut-off events. [2024-06-28 01:37:29,760 INFO L125 PetriNetUnfolderBase]: For 132438/132438 co-relation queries the response was YES. [2024-06-28 01:37:29,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32378 conditions, 9422 events. 3997/9422 cut-off events. For 132438/132438 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 94559 event pairs, 2051 based on Foata normal form. 6/8827 useless extension candidates. Maximal degree in co-relation 32196. Up to 7063 conditions per place. [2024-06-28 01:37:29,854 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 355 selfloop transitions, 75 changer transitions 0/439 dead transitions. [2024-06-28 01:37:29,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 439 transitions, 5428 flow [2024-06-28 01:37:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:37:29,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:37:29,855 INFO L175 Difference]: Start difference. First operand has 435 places, 399 transitions, 4420 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:37:29,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 439 transitions, 5428 flow [2024-06-28 01:37:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 439 transitions, 5263 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:31,272 INFO L231 Difference]: Finished difference. Result has 437 places, 399 transitions, 4408 flow [2024-06-28 01:37:31,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4408, PETRI_PLACES=437, PETRI_TRANSITIONS=399} [2024-06-28 01:37:31,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 01:37:31,273 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 399 transitions, 4408 flow [2024-06-28 01:37:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:31,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:31,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:37:31,273 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:31,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 945768199, now seen corresponding path program 9 times [2024-06-28 01:37:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566534748] [2024-06-28 01:37:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566534748] [2024-06-28 01:37:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566534748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:32,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:32,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414879587] [2024-06-28 01:37:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:32,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:32,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:32,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 399 transitions, 4408 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:32,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:32,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:32,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:34,867 INFO L124 PetriNetUnfolderBase]: 4034/9511 cut-off events. [2024-06-28 01:37:34,867 INFO L125 PetriNetUnfolderBase]: For 134024/134024 co-relation queries the response was YES. [2024-06-28 01:37:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32598 conditions, 9511 events. 4034/9511 cut-off events. For 134024/134024 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 95699 event pairs, 2070 based on Foata normal form. 6/8921 useless extension candidates. Maximal degree in co-relation 32415. Up to 6922 conditions per place. [2024-06-28 01:37:34,965 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 346 selfloop transitions, 84 changer transitions 0/439 dead transitions. [2024-06-28 01:37:34,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 439 transitions, 5416 flow [2024-06-28 01:37:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:37:34,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:37:34,967 INFO L175 Difference]: Start difference. First operand has 437 places, 399 transitions, 4408 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:37:34,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 439 transitions, 5416 flow [2024-06-28 01:37:36,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 439 transitions, 5267 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:36,490 INFO L231 Difference]: Finished difference. Result has 439 places, 399 transitions, 4430 flow [2024-06-28 01:37:36,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4430, PETRI_PLACES=439, PETRI_TRANSITIONS=399} [2024-06-28 01:37:36,490 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 01:37:36,490 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 399 transitions, 4430 flow [2024-06-28 01:37:36,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:36,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:36,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:36,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:37:36,491 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:36,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:36,491 INFO L85 PathProgramCache]: Analyzing trace with hash -547109293, now seen corresponding path program 10 times [2024-06-28 01:37:36,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301760877] [2024-06-28 01:37:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301760877] [2024-06-28 01:37:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301760877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:37,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:37,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:37,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722937463] [2024-06-28 01:37:37,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:37,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:37,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:37,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 399 transitions, 4430 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:37,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:37,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:37,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:40,134 INFO L124 PetriNetUnfolderBase]: 4071/9604 cut-off events. [2024-06-28 01:37:40,135 INFO L125 PetriNetUnfolderBase]: For 135817/135817 co-relation queries the response was YES. [2024-06-28 01:37:40,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32939 conditions, 9604 events. 4071/9604 cut-off events. For 135817/135817 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 96866 event pairs, 2142 based on Foata normal form. 6/9002 useless extension candidates. Maximal degree in co-relation 32755. Up to 7310 conditions per place. [2024-06-28 01:37:40,241 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 352 selfloop transitions, 74 changer transitions 0/435 dead transitions. [2024-06-28 01:37:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 435 transitions, 5416 flow [2024-06-28 01:37:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:37:40,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:37:40,242 INFO L175 Difference]: Start difference. First operand has 439 places, 399 transitions, 4430 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:37:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 435 transitions, 5416 flow [2024-06-28 01:37:41,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 435 transitions, 5249 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:41,595 INFO L231 Difference]: Finished difference. Result has 441 places, 399 transitions, 4414 flow [2024-06-28 01:37:41,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4414, PETRI_PLACES=441, PETRI_TRANSITIONS=399} [2024-06-28 01:37:41,596 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 01:37:41,596 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 399 transitions, 4414 flow [2024-06-28 01:37:41,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:41,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:41,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:41,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:37:41,596 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:41,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1743219117, now seen corresponding path program 11 times [2024-06-28 01:37:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659352409] [2024-06-28 01:37:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659352409] [2024-06-28 01:37:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659352409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:42,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:42,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922722130] [2024-06-28 01:37:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:42,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:42,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 399 transitions, 4414 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:42,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:42,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:42,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:44,964 INFO L124 PetriNetUnfolderBase]: 4108/9652 cut-off events. [2024-06-28 01:37:44,964 INFO L125 PetriNetUnfolderBase]: For 137184/137184 co-relation queries the response was YES. [2024-06-28 01:37:45,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33033 conditions, 9652 events. 4108/9652 cut-off events. For 137184/137184 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 97344 event pairs, 2105 based on Foata normal form. 6/9071 useless extension candidates. Maximal degree in co-relation 32848. Up to 6786 conditions per place. [2024-06-28 01:37:45,067 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 350 selfloop transitions, 84 changer transitions 0/443 dead transitions. [2024-06-28 01:37:45,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 443 transitions, 5444 flow [2024-06-28 01:37:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 01:37:45,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2024-06-28 01:37:45,068 INFO L175 Difference]: Start difference. First operand has 441 places, 399 transitions, 4414 flow. Second operand 12 states and 211 transitions. [2024-06-28 01:37:45,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 443 transitions, 5444 flow [2024-06-28 01:37:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 443 transitions, 5297 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:46,446 INFO L231 Difference]: Finished difference. Result has 443 places, 399 transitions, 4438 flow [2024-06-28 01:37:46,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4438, PETRI_PLACES=443, PETRI_TRANSITIONS=399} [2024-06-28 01:37:46,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 01:37:46,446 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 399 transitions, 4438 flow [2024-06-28 01:37:46,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:46,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:46,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:37:46,447 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:46,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1600601483, now seen corresponding path program 12 times [2024-06-28 01:37:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:46,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676111805] [2024-06-28 01:37:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676111805] [2024-06-28 01:37:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676111805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:47,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:47,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109043638] [2024-06-28 01:37:47,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:47,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:47,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:47,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:47,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 399 transitions, 4438 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:47,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:47,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:47,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:49,872 INFO L124 PetriNetUnfolderBase]: 4145/9762 cut-off events. [2024-06-28 01:37:49,872 INFO L125 PetriNetUnfolderBase]: For 139334/139334 co-relation queries the response was YES. [2024-06-28 01:37:49,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33475 conditions, 9762 events. 4145/9762 cut-off events. For 139334/139334 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 98762 event pairs, 2233 based on Foata normal form. 6/9161 useless extension candidates. Maximal degree in co-relation 33289. Up to 7268 conditions per place. [2024-06-28 01:37:49,979 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 304 selfloop transitions, 120 changer transitions 0/433 dead transitions. [2024-06-28 01:37:49,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 433 transitions, 5414 flow [2024-06-28 01:37:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:37:49,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:37:49,980 INFO L175 Difference]: Start difference. First operand has 443 places, 399 transitions, 4438 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:37:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 433 transitions, 5414 flow [2024-06-28 01:37:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 433 transitions, 5247 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:51,301 INFO L231 Difference]: Finished difference. Result has 445 places, 399 transitions, 4514 flow [2024-06-28 01:37:51,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4271, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4514, PETRI_PLACES=445, PETRI_TRANSITIONS=399} [2024-06-28 01:37:51,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 01:37:51,302 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 399 transitions, 4514 flow [2024-06-28 01:37:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:51,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:51,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:37:51,302 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:51,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2141546109, now seen corresponding path program 13 times [2024-06-28 01:37:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516232752] [2024-06-28 01:37:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516232752] [2024-06-28 01:37:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516232752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414828912] [2024-06-28 01:37:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:52,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:52,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 399 transitions, 4514 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:52,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:52,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:52,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:54,791 INFO L124 PetriNetUnfolderBase]: 4182/9841 cut-off events. [2024-06-28 01:37:54,792 INFO L125 PetriNetUnfolderBase]: For 140875/140875 co-relation queries the response was YES. [2024-06-28 01:37:54,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33719 conditions, 9841 events. 4182/9841 cut-off events. For 140875/140875 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 99696 event pairs, 2217 based on Foata normal form. 6/9237 useless extension candidates. Maximal degree in co-relation 33532. Up to 7295 conditions per place. [2024-06-28 01:37:54,893 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 157 changer transitions 0/433 dead transitions. [2024-06-28 01:37:54,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 433 transitions, 5490 flow [2024-06-28 01:37:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:37:54,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:37:54,894 INFO L175 Difference]: Start difference. First operand has 445 places, 399 transitions, 4514 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:37:54,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 433 transitions, 5490 flow [2024-06-28 01:37:56,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 433 transitions, 5251 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:56,290 INFO L231 Difference]: Finished difference. Result has 447 places, 399 transitions, 4592 flow [2024-06-28 01:37:56,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4592, PETRI_PLACES=447, PETRI_TRANSITIONS=399} [2024-06-28 01:37:56,291 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 01:37:56,291 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 399 transitions, 4592 flow [2024-06-28 01:37:56,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:56,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:56,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:56,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:37:56,292 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1280687989, now seen corresponding path program 14 times [2024-06-28 01:37:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:56,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194576814] [2024-06-28 01:37:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:57,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194576814] [2024-06-28 01:37:57,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194576814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:57,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:57,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:57,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130198154] [2024-06-28 01:37:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:57,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:57,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 399 transitions, 4592 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:57,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:57,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:57,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:59,942 INFO L124 PetriNetUnfolderBase]: 4219/9938 cut-off events. [2024-06-28 01:37:59,942 INFO L125 PetriNetUnfolderBase]: For 143324/143324 co-relation queries the response was YES. [2024-06-28 01:38:00,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34044 conditions, 9938 events. 4219/9938 cut-off events. For 143324/143324 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 100967 event pairs, 2278 based on Foata normal form. 6/9332 useless extension candidates. Maximal degree in co-relation 33856. Up to 7385 conditions per place. [2024-06-28 01:38:00,049 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 318 selfloop transitions, 110 changer transitions 0/437 dead transitions. [2024-06-28 01:38:00,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 437 transitions, 5590 flow [2024-06-28 01:38:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-28 01:38:00,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:38:00,050 INFO L175 Difference]: Start difference. First operand has 447 places, 399 transitions, 4592 flow. Second operand 12 states and 212 transitions. [2024-06-28 01:38:00,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 437 transitions, 5590 flow [2024-06-28 01:38:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 437 transitions, 5277 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:01,364 INFO L231 Difference]: Finished difference. Result has 449 places, 399 transitions, 4502 flow [2024-06-28 01:38:01,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4279, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4502, PETRI_PLACES=449, PETRI_TRANSITIONS=399} [2024-06-28 01:38:01,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-28 01:38:01,365 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 399 transitions, 4502 flow [2024-06-28 01:38:01,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:01,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:01,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:01,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:38:01,365 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:01,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1479989779, now seen corresponding path program 15 times [2024-06-28 01:38:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795810420] [2024-06-28 01:38:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795810420] [2024-06-28 01:38:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795810420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859667796] [2024-06-28 01:38:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:02,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:38:02,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 399 transitions, 4502 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:02,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:02,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:38:02,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand