./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 21:24:16,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 21:24:16,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 21:24:16,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 21:24:16,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 21:24:16,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 21:24:16,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 21:24:16,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 21:24:16,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 21:24:16,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 21:24:16,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 21:24:16,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 21:24:16,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 21:24:16,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 21:24:16,192 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 21:24:16,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 21:24:16,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 21:24:16,193 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 21:24:16,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 21:24:16,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 21:24:16,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 21:24:16,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 21:24:16,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 21:24:16,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 21:24:16,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 21:24:16,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 21:24:16,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 21:24:16,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 21:24:16,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 21:24:16,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 21:24:16,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 21:24:16,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 21:24:16,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:24:16,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 21:24:16,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 21:24:16,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 21:24:16,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 21:24:16,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 21:24:16,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 21:24:16,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 21:24:16,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 21:24:16,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 21:24:16,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 21:24:16,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 21:24:16,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 21:24:16,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 21:24:16,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 21:24:16,539 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 21:24:16,539 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 21:24:16,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-21 21:24:16,722 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 21:24:16,722 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 21:24:16,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 21:24:17,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 21:24:18,198 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 21:24:18,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 21:24:18,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e955be8/64cea0a45d674e55ab67aba0cc52c580/FLAG6c55d18ad [2024-06-21 21:24:18,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e955be8/64cea0a45d674e55ab67aba0cc52c580 [2024-06-21 21:24:18,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 21:24:18,225 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 21:24:18,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 21:24:18,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 21:24:18,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 21:24:18,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:24:16" (1/2) ... [2024-06-21 21:24:18,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c67433 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:24:18, skipping insertion in model container [2024-06-21 21:24:18,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:24:16" (1/2) ... [2024-06-21 21:24:18,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ede7de9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:24:18, skipping insertion in model container [2024-06-21 21:24:18,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:24:18" (2/2) ... [2024-06-21 21:24:18,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c67433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18, skipping insertion in model container [2024-06-21 21:24:18,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:24:18" (2/2) ... [2024-06-21 21:24:18,235 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 21:24:18,329 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 21:24:18,330 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-21 21:24:18,331 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-21 21:24:18,331 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-21 21:24:18,331 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 21:24:18,331 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-21 21:24:18,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 21:24:18,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:24:18,746 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 21:24:18,909 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:24:18,949 INFO L206 MainTranslator]: Completed translation [2024-06-21 21:24:18,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18 WrapperNode [2024-06-21 21:24:18,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 21:24:18,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 21:24:18,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 21:24:18,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 21:24:18,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:18,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,030 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2024-06-21 21:24:19,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 21:24:19,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 21:24:19,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 21:24:19,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 21:24:19,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,078 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]. [2024-06-21 21:24:19,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 21:24:19,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 21:24:19,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 21:24:19,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 21:24:19,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (1/1) ... [2024-06-21 21:24:19,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:24:19,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 21:24:19,140 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) [2024-06-21 21:24:19,185 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 [2024-06-21 21:24:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 21:24:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 21:24:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 21:24:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 21:24:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 21:24:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 21:24:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 21:24:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 21:24:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 21:24:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 21:24:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 21:24:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 21:24:19,218 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 21:24:19,333 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 21:24:19,335 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 21:24:19,680 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 21:24:19,681 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 21:24:19,881 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 21:24:19,881 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 21:24:19,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:24:19 BoogieIcfgContainer [2024-06-21 21:24:19,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 21:24:19,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 21:24:19,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 21:24:19,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 21:24:19,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:24:16" (1/4) ... [2024-06-21 21:24:19,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f2f37 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 09:24:19, skipping insertion in model container [2024-06-21 21:24:19,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 09:24:18" (2/4) ... [2024-06-21 21:24:19,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f2f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 09:24:19, skipping insertion in model container [2024-06-21 21:24:19,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:24:18" (3/4) ... [2024-06-21 21:24:19,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f2f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 09:24:19, skipping insertion in model container [2024-06-21 21:24:19,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:24:19" (4/4) ... [2024-06-21 21:24:19,894 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 21:24:19,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 21:24:19,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 21:24:19,910 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 21:24:20,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 21:24:20,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-21 21:24:20,133 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-21 21:24:20,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:24:20,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 21:24:20,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-21 21:24:20,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-21 21:24:20,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 21:24:20,161 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;@62cd6718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 21:24:20,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 21:24:20,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 21:24:20,166 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 21:24:20,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:24:20,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:20,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 21:24:20,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:20,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 399192754, now seen corresponding path program 1 times [2024-06-21 21:24:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991984399] [2024-06-21 21:24:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991984399] [2024-06-21 21:24:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991984399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:21,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:21,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 21:24:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209721714] [2024-06-21 21:24:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 21:24:21,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 21:24:21,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 21:24:21,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-21 21:24:21,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:21,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:21,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-21 21:24:21,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:21,632 INFO L124 PetriNetUnfolderBase]: 891/1376 cut-off events. [2024-06-21 21:24:21,633 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-21 21:24:21,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1376 events. 891/1376 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6697 event pairs, 520 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 2785. Up to 1335 conditions per place. [2024-06-21 21:24:21,651 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-21 21:24:21,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 169 flow [2024-06-21 21:24:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 21:24:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 21:24:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-21 21:24:21,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-21 21:24:21,665 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 77 transitions. [2024-06-21 21:24:21,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 169 flow [2024-06-21 21:24:21,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 21:24:21,671 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-21 21:24:21,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-21 21:24:21,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-21 21:24:21,676 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-21 21:24:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:21,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:21,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:21,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 21:24:21,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:21,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1261754706, now seen corresponding path program 1 times [2024-06-21 21:24:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70695292] [2024-06-21 21:24:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70695292] [2024-06-21 21:24:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70695292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:23,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:24:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946232403] [2024-06-21 21:24:23,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:24:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:24:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:24:23,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-21 21:24:23,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:23,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:23,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-21 21:24:23,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:23,549 INFO L124 PetriNetUnfolderBase]: 1131/1733 cut-off events. [2024-06-21 21:24:23,549 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-06-21 21:24:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1733 events. 1131/1733 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8152 event pairs, 589 based on Foata normal form. 6/1728 useless extension candidates. Maximal degree in co-relation 3989. Up to 1639 conditions per place. [2024-06-21 21:24:23,559 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-06-21 21:24:23,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 222 flow [2024-06-21 21:24:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 21:24:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 21:24:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-21 21:24:23,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-21 21:24:23,562 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-06-21 21:24:23,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 222 flow [2024-06-21 21:24:23,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 21:24:23,564 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 121 flow [2024-06-21 21:24:23,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-21 21:24:23,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-06-21 21:24:23,565 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 121 flow [2024-06-21 21:24:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:23,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 21:24:23,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:23,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1437879967, now seen corresponding path program 1 times [2024-06-21 21:24:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:23,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818249465] [2024-06-21 21:24:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:24,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:24,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818249465] [2024-06-21 21:24:24,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818249465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:24,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:24,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:24:24,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990031323] [2024-06-21 21:24:24,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:24,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:24:24,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:24,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:24:24,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:24:24,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-21 21:24:24,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:24,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:24,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-21 21:24:24,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:24,702 INFO L124 PetriNetUnfolderBase]: 888/1393 cut-off events. [2024-06-21 21:24:24,703 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-21 21:24:24,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 1393 events. 888/1393 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6811 event pairs, 408 based on Foata normal form. 4/1393 useless extension candidates. Maximal degree in co-relation 3482. Up to 1326 conditions per place. [2024-06-21 21:24:24,711 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-21 21:24:24,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 271 flow [2024-06-21 21:24:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:24:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:24:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-21 21:24:24,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-21 21:24:24,717 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 121 flow. Second operand 5 states and 99 transitions. [2024-06-21 21:24:24,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 271 flow [2024-06-21 21:24:24,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 254 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 21:24:24,721 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 170 flow [2024-06-21 21:24:24,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-21 21:24:24,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-06-21 21:24:24,722 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 170 flow [2024-06-21 21:24:24,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:24,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:24,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:24,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 21:24:24,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:24,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1624605075, now seen corresponding path program 1 times [2024-06-21 21:24:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481026762] [2024-06-21 21:24:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481026762] [2024-06-21 21:24:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481026762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:24:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743710537] [2024-06-21 21:24:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:25,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:24:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:25,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:24:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:24:25,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-21 21:24:25,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 170 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) [2024-06-21 21:24:25,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:25,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-21 21:24:25,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:26,240 INFO L124 PetriNetUnfolderBase]: 900/1413 cut-off events. [2024-06-21 21:24:26,240 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2024-06-21 21:24:26,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 1413 events. 900/1413 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6826 event pairs, 378 based on Foata normal form. 8/1417 useless extension candidates. Maximal degree in co-relation 4039. Up to 1308 conditions per place. [2024-06-21 21:24:26,250 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 44 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-21 21:24:26,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 346 flow [2024-06-21 21:24:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-21 21:24:26,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-21 21:24:26,251 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 170 flow. Second operand 6 states and 119 transitions. [2024-06-21 21:24:26,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 346 flow [2024-06-21 21:24:26,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 332 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 21:24:26,254 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 217 flow [2024-06-21 21:24:26,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-21 21:24:26,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-21 21:24:26,256 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 217 flow [2024-06-21 21:24:26,256 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) [2024-06-21 21:24:26,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:26,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:26,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 21:24:26,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:26,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1945152082, now seen corresponding path program 1 times [2024-06-21 21:24:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252921872] [2024-06-21 21:24:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:26,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252921872] [2024-06-21 21:24:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252921872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:24:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387629534] [2024-06-21 21:24:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:27,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:24:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:24:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:24:27,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:27,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 217 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) [2024-06-21 21:24:27,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:27,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:27,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:27,750 INFO L124 PetriNetUnfolderBase]: 1129/1756 cut-off events. [2024-06-21 21:24:27,751 INFO L125 PetriNetUnfolderBase]: For 2861/2864 co-relation queries the response was YES. [2024-06-21 21:24:27,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1756 events. 1129/1756 cut-off events. For 2861/2864 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8475 event pairs, 435 based on Foata normal form. 2/1751 useless extension candidates. Maximal degree in co-relation 5482. Up to 1627 conditions per place. [2024-06-21 21:24:27,764 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-21 21:24:27,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 391 flow [2024-06-21 21:24:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:24:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:24:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-21 21:24:27,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-21 21:24:27,766 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 217 flow. Second operand 5 states and 98 transitions. [2024-06-21 21:24:27,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 391 flow [2024-06-21 21:24:27,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 360 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:27,774 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 252 flow [2024-06-21 21:24:27,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-21 21:24:27,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-21 21:24:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 252 flow [2024-06-21 21:24:27,777 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) [2024-06-21 21:24:27,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:27,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 21:24:27,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:27,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1707039555, now seen corresponding path program 1 times [2024-06-21 21:24:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:27,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296993500] [2024-06-21 21:24:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:28,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:28,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296993500] [2024-06-21 21:24:28,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296993500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:28,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:28,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:24:28,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459066106] [2024-06-21 21:24:28,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:28,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:24:28,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:24:28,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:24:28,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:28,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2024-06-21 21:24:28,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:28,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:28,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:28,922 INFO L124 PetriNetUnfolderBase]: 1330/2018 cut-off events. [2024-06-21 21:24:28,923 INFO L125 PetriNetUnfolderBase]: For 4438/4438 co-relation queries the response was YES. [2024-06-21 21:24:28,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 2018 events. 1330/2018 cut-off events. For 4438/4438 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9397 event pairs, 522 based on Foata normal form. 2/2017 useless extension candidates. Maximal degree in co-relation 6671. Up to 1987 conditions per place. [2024-06-21 21:24:28,939 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 51 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-06-21 21:24:28,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 423 flow [2024-06-21 21:24:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:24:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:24:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-21 21:24:28,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-06-21 21:24:28,941 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 252 flow. Second operand 5 states and 87 transitions. [2024-06-21 21:24:28,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 423 flow [2024-06-21 21:24:28,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 386 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 21:24:28,947 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 282 flow [2024-06-21 21:24:28,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2024-06-21 21:24:28,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-21 21:24:28,950 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 282 flow [2024-06-21 21:24:28,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2024-06-21 21:24:28,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:28,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 21:24:28,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:28,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1140823994, now seen corresponding path program 1 times [2024-06-21 21:24:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942913405] [2024-06-21 21:24:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:30,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:30,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942913405] [2024-06-21 21:24:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942913405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:30,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:24:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887840129] [2024-06-21 21:24:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:24:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:24:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:24:30,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:30,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 282 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) [2024-06-21 21:24:30,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:30,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:30,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:30,937 INFO L124 PetriNetUnfolderBase]: 1134/1765 cut-off events. [2024-06-21 21:24:30,937 INFO L125 PetriNetUnfolderBase]: For 3358/3361 co-relation queries the response was YES. [2024-06-21 21:24:30,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 1765 events. 1134/1765 cut-off events. For 3358/3361 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8522 event pairs, 394 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 5839. Up to 1594 conditions per place. [2024-06-21 21:24:30,952 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 52 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-06-21 21:24:30,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 512 flow [2024-06-21 21:24:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-21 21:24:30,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-21 21:24:30,955 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 282 flow. Second operand 6 states and 117 transitions. [2024-06-21 21:24:30,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 512 flow [2024-06-21 21:24:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 506 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-21 21:24:30,960 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 374 flow [2024-06-21 21:24:30,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-21 21:24:30,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-21 21:24:30,962 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 374 flow [2024-06-21 21:24:30,963 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) [2024-06-21 21:24:30,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:30,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 21:24:30,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:30,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash -500833466, now seen corresponding path program 2 times [2024-06-21 21:24:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114209861] [2024-06-21 21:24:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:32,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114209861] [2024-06-21 21:24:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114209861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:32,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:32,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:24:32,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117259868] [2024-06-21 21:24:32,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:32,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:24:32,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:24:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:24:32,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:32,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 374 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) [2024-06-21 21:24:32,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:32,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:32,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:33,140 INFO L124 PetriNetUnfolderBase]: 1129/1761 cut-off events. [2024-06-21 21:24:33,141 INFO L125 PetriNetUnfolderBase]: For 4659/4665 co-relation queries the response was YES. [2024-06-21 21:24:33,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 1761 events. 1129/1761 cut-off events. For 4659/4665 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8513 event pairs, 387 based on Foata normal form. 6/1762 useless extension candidates. Maximal degree in co-relation 6352. Up to 1611 conditions per place. [2024-06-21 21:24:33,161 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 64 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-21 21:24:33,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 629 flow [2024-06-21 21:24:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:24:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:24:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-21 21:24:33,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-21 21:24:33,166 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 374 flow. Second operand 7 states and 133 transitions. [2024-06-21 21:24:33,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 629 flow [2024-06-21 21:24:33,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 584 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:33,174 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 415 flow [2024-06-21 21:24:33,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-21 21:24:33,176 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-21 21:24:33,176 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 415 flow [2024-06-21 21:24:33,176 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) [2024-06-21 21:24:33,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:33,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:33,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 21:24:33,177 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:33,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1377636511, now seen corresponding path program 1 times [2024-06-21 21:24:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:33,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158572581] [2024-06-21 21:24:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158572581] [2024-06-21 21:24:35,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158572581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:24:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95713320] [2024-06-21 21:24:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:35,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:24:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:24:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:24:35,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:35,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 415 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) [2024-06-21 21:24:35,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:35,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:35,874 INFO L124 PetriNetUnfolderBase]: 1274/2003 cut-off events. [2024-06-21 21:24:35,874 INFO L125 PetriNetUnfolderBase]: For 7737/7737 co-relation queries the response was YES. [2024-06-21 21:24:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 2003 events. 1274/2003 cut-off events. For 7737/7737 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9728 event pairs, 434 based on Foata normal form. 24/2021 useless extension candidates. Maximal degree in co-relation 7671. Up to 1722 conditions per place. [2024-06-21 21:24:35,892 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 71 selfloop transitions, 24 changer transitions 0/102 dead transitions. [2024-06-21 21:24:35,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 749 flow [2024-06-21 21:24:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:24:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:24:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 21:24:35,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-21 21:24:35,894 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 415 flow. Second operand 9 states and 169 transitions. [2024-06-21 21:24:35,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 749 flow [2024-06-21 21:24:35,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 702 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:35,934 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 485 flow [2024-06-21 21:24:35,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-21 21:24:35,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-21 21:24:35,936 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 485 flow [2024-06-21 21:24:35,936 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) [2024-06-21 21:24:35,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:35,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 21:24:35,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:35,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash 977545297, now seen corresponding path program 1 times [2024-06-21 21:24:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:35,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211666091] [2024-06-21 21:24:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:35,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:36,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211666091] [2024-06-21 21:24:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211666091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:24:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989721530] [2024-06-21 21:24:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:24:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:24:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:24:36,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:37,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 485 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) [2024-06-21 21:24:37,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:37,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:37,435 INFO L124 PetriNetUnfolderBase]: 1328/2071 cut-off events. [2024-06-21 21:24:37,435 INFO L125 PetriNetUnfolderBase]: For 9014/9017 co-relation queries the response was YES. [2024-06-21 21:24:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8353 conditions, 2071 events. 1328/2071 cut-off events. For 9014/9017 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10229 event pairs, 308 based on Foata normal form. 4/2068 useless extension candidates. Maximal degree in co-relation 8323. Up to 1913 conditions per place. [2024-06-21 21:24:37,454 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 70 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-21 21:24:37,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 713 flow [2024-06-21 21:24:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-21 21:24:37,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-21 21:24:37,456 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 485 flow. Second operand 6 states and 113 transitions. [2024-06-21 21:24:37,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 713 flow [2024-06-21 21:24:37,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 655 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 21:24:37,469 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 484 flow [2024-06-21 21:24:37,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-21 21:24:37,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-21 21:24:37,471 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 484 flow [2024-06-21 21:24:37,471 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) [2024-06-21 21:24:37,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:37,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 21:24:37,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:37,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 41270289, now seen corresponding path program 2 times [2024-06-21 21:24:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:37,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417907750] [2024-06-21 21:24:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417907750] [2024-06-21 21:24:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417907750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:38,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:38,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:24:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11578919] [2024-06-21 21:24:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:24:38,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:24:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:24:38,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:38,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 484 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) [2024-06-21 21:24:38,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:38,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:38,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:39,352 INFO L124 PetriNetUnfolderBase]: 1392/2179 cut-off events. [2024-06-21 21:24:39,352 INFO L125 PetriNetUnfolderBase]: For 10606/10608 co-relation queries the response was YES. [2024-06-21 21:24:39,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8955 conditions, 2179 events. 1392/2179 cut-off events. For 10606/10608 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10835 event pairs, 399 based on Foata normal form. 6/2182 useless extension candidates. Maximal degree in co-relation 8924. Up to 2015 conditions per place. [2024-06-21 21:24:39,368 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 87 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-21 21:24:39,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 924 flow [2024-06-21 21:24:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:24:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:24:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 21:24:39,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-21 21:24:39,371 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 484 flow. Second operand 9 states and 169 transitions. [2024-06-21 21:24:39,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 924 flow [2024-06-21 21:24:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 869 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:39,385 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 656 flow [2024-06-21 21:24:39,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-06-21 21:24:39,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-21 21:24:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 656 flow [2024-06-21 21:24:39,386 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) [2024-06-21 21:24:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:39,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 21:24:39,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:39,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1005801459, now seen corresponding path program 3 times [2024-06-21 21:24:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208167610] [2024-06-21 21:24:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208167610] [2024-06-21 21:24:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208167610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:40,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:40,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:24:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718982994] [2024-06-21 21:24:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:24:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:24:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:24:40,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:40,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 656 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) [2024-06-21 21:24:40,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:40,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:40,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:40,850 INFO L124 PetriNetUnfolderBase]: 1384/2164 cut-off events. [2024-06-21 21:24:40,850 INFO L125 PetriNetUnfolderBase]: For 12446/12451 co-relation queries the response was YES. [2024-06-21 21:24:40,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 2164 events. 1384/2164 cut-off events. For 12446/12451 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10754 event pairs, 399 based on Foata normal form. 4/2156 useless extension candidates. Maximal degree in co-relation 9244. Up to 1929 conditions per place. [2024-06-21 21:24:40,869 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 72 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-21 21:24:40,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 108 transitions, 948 flow [2024-06-21 21:24:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-21 21:24:40,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-21 21:24:40,871 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 656 flow. Second operand 6 states and 115 transitions. [2024-06-21 21:24:40,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 108 transitions, 948 flow [2024-06-21 21:24:40,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 861 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 21:24:40,888 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 672 flow [2024-06-21 21:24:40,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=672, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-21 21:24:40,889 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-21 21:24:40,889 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 672 flow [2024-06-21 21:24:40,889 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) [2024-06-21 21:24:40,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:40,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:40,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 21:24:40,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:40,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:40,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1573631842, now seen corresponding path program 1 times [2024-06-21 21:24:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:40,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174913642] [2024-06-21 21:24:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:41,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:41,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174913642] [2024-06-21 21:24:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174913642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:24:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543735256] [2024-06-21 21:24:41,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:24:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:24:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:24:41,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:41,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:41,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:41,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:42,145 INFO L124 PetriNetUnfolderBase]: 1477/2273 cut-off events. [2024-06-21 21:24:42,145 INFO L125 PetriNetUnfolderBase]: For 14868/14873 co-relation queries the response was YES. [2024-06-21 21:24:42,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2273 events. 1477/2273 cut-off events. For 14868/14873 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10958 event pairs, 438 based on Foata normal form. 4/2265 useless extension candidates. Maximal degree in co-relation 9920. Up to 2146 conditions per place. [2024-06-21 21:24:42,163 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 76 selfloop transitions, 23 changer transitions 0/103 dead transitions. [2024-06-21 21:24:42,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 103 transitions, 928 flow [2024-06-21 21:24:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:24:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:24:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-21 21:24:42,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-21 21:24:42,165 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 672 flow. Second operand 5 states and 91 transitions. [2024-06-21 21:24:42,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 103 transitions, 928 flow [2024-06-21 21:24:42,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 847 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:42,190 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 681 flow [2024-06-21 21:24:42,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=681, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-21 21:24:42,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-21 21:24:42,192 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 681 flow [2024-06-21 21:24:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:42,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:42,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 21:24:42,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:42,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 517966306, now seen corresponding path program 2 times [2024-06-21 21:24:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107233883] [2024-06-21 21:24:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:42,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107233883] [2024-06-21 21:24:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107233883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:42,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:42,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:24:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163156926] [2024-06-21 21:24:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:24:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:24:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:24:42,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:42,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:42,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:42,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:42,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:43,496 INFO L124 PetriNetUnfolderBase]: 1465/2257 cut-off events. [2024-06-21 21:24:43,496 INFO L125 PetriNetUnfolderBase]: For 14085/14090 co-relation queries the response was YES. [2024-06-21 21:24:43,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 2257 events. 1465/2257 cut-off events. For 14085/14090 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10879 event pairs, 436 based on Foata normal form. 4/2249 useless extension candidates. Maximal degree in co-relation 9902. Up to 2114 conditions per place. [2024-06-21 21:24:43,513 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 79 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2024-06-21 21:24:43,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 967 flow [2024-06-21 21:24:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-21 21:24:43,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-21 21:24:43,515 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 681 flow. Second operand 6 states and 106 transitions. [2024-06-21 21:24:43,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 967 flow [2024-06-21 21:24:43,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 911 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-21 21:24:43,541 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 719 flow [2024-06-21 21:24:43,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=719, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-06-21 21:24:43,542 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-21 21:24:43,542 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 719 flow [2024-06-21 21:24:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:43,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:43,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:43,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 21:24:43,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:43,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash -219125086, now seen corresponding path program 1 times [2024-06-21 21:24:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396866656] [2024-06-21 21:24:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396866656] [2024-06-21 21:24:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396866656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:24:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081945273] [2024-06-21 21:24:44,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:24:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:24:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:24:44,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:44,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 719 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:44,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:44,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:44,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:44,723 INFO L124 PetriNetUnfolderBase]: 1483/2280 cut-off events. [2024-06-21 21:24:44,723 INFO L125 PetriNetUnfolderBase]: For 14330/14332 co-relation queries the response was YES. [2024-06-21 21:24:44,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 2280 events. 1483/2280 cut-off events. For 14330/14332 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10984 event pairs, 437 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 10108. Up to 2207 conditions per place. [2024-06-21 21:24:44,739 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 103 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-21 21:24:44,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 1094 flow [2024-06-21 21:24:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-21 21:24:44,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-21 21:24:44,741 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 719 flow. Second operand 6 states and 107 transitions. [2024-06-21 21:24:44,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 1094 flow [2024-06-21 21:24:44,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 1025 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:44,760 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 790 flow [2024-06-21 21:24:44,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-21 21:24:44,760 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-21 21:24:44,761 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 790 flow [2024-06-21 21:24:44,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:44,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:44,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:44,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 21:24:44,761 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:44,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash 846611204, now seen corresponding path program 2 times [2024-06-21 21:24:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498684935] [2024-06-21 21:24:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:45,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498684935] [2024-06-21 21:24:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498684935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:45,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:45,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:24:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102886519] [2024-06-21 21:24:45,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:45,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:24:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:24:45,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:24:45,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:45,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 790 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:45,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:45,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:45,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:46,012 INFO L124 PetriNetUnfolderBase]: 1477/2274 cut-off events. [2024-06-21 21:24:46,012 INFO L125 PetriNetUnfolderBase]: For 15933/15935 co-relation queries the response was YES. [2024-06-21 21:24:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10577 conditions, 2274 events. 1477/2274 cut-off events. For 15933/15935 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10941 event pairs, 433 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 10538. Up to 2217 conditions per place. [2024-06-21 21:24:46,030 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 103 selfloop transitions, 11 changer transitions 0/118 dead transitions. [2024-06-21 21:24:46,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 1055 flow [2024-06-21 21:24:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-21 21:24:46,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:24:46,032 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 790 flow. Second operand 6 states and 100 transitions. [2024-06-21 21:24:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 1055 flow [2024-06-21 21:24:46,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 1029 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-21 21:24:46,075 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 801 flow [2024-06-21 21:24:46,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=801, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2024-06-21 21:24:46,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-21 21:24:46,076 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 801 flow [2024-06-21 21:24:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:46,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:46,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:46,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 21:24:46,077 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:46,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash -212449918, now seen corresponding path program 1 times [2024-06-21 21:24:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:46,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505167693] [2024-06-21 21:24:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:47,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505167693] [2024-06-21 21:24:47,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505167693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:47,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:47,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:24:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480598597] [2024-06-21 21:24:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:24:47,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:24:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:24:47,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:47,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 801 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:47,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:47,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:47,591 INFO L124 PetriNetUnfolderBase]: 1472/2265 cut-off events. [2024-06-21 21:24:47,591 INFO L125 PetriNetUnfolderBase]: For 17283/17285 co-relation queries the response was YES. [2024-06-21 21:24:47,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 2265 events. 1472/2265 cut-off events. For 17283/17285 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10880 event pairs, 434 based on Foata normal form. 2/2264 useless extension candidates. Maximal degree in co-relation 10635. Up to 2207 conditions per place. [2024-06-21 21:24:47,609 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 104 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2024-06-21 21:24:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 1077 flow [2024-06-21 21:24:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:24:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:24:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-21 21:24:47,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:24:47,611 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 801 flow. Second operand 6 states and 100 transitions. [2024-06-21 21:24:47,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 1077 flow [2024-06-21 21:24:47,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 1055 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:47,642 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 828 flow [2024-06-21 21:24:47,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2024-06-21 21:24:47,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-21 21:24:47,643 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 828 flow [2024-06-21 21:24:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:24:47,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:47,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 21:24:47,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:47,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 239134077, now seen corresponding path program 1 times [2024-06-21 21:24:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857782342] [2024-06-21 21:24:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:47,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:48,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857782342] [2024-06-21 21:24:48,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857782342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:48,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:48,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:24:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872151031] [2024-06-21 21:24:48,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:48,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:24:48,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:48,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:24:48,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:24:49,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:49,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 828 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) [2024-06-21 21:24:49,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:49,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:49,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:49,673 INFO L124 PetriNetUnfolderBase]: 1416/2220 cut-off events. [2024-06-21 21:24:49,673 INFO L125 PetriNetUnfolderBase]: For 19188/19193 co-relation queries the response was YES. [2024-06-21 21:24:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10759 conditions, 2220 events. 1416/2220 cut-off events. For 19188/19193 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11025 event pairs, 278 based on Foata normal form. 4/2212 useless extension candidates. Maximal degree in co-relation 10717. Up to 1991 conditions per place. [2024-06-21 21:24:49,690 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 105 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-21 21:24:49,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1174 flow [2024-06-21 21:24:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:24:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:24:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-21 21:24:49,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-21 21:24:49,692 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 828 flow. Second operand 7 states and 130 transitions. [2024-06-21 21:24:49,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1174 flow [2024-06-21 21:24:49,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 1141 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 21:24:49,725 INFO L231 Difference]: Finished difference. Result has 97 places, 112 transitions, 878 flow [2024-06-21 21:24:49,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=97, PETRI_TRANSITIONS=112} [2024-06-21 21:24:49,725 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-21 21:24:49,726 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 112 transitions, 878 flow [2024-06-21 21:24:49,726 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) [2024-06-21 21:24:49,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:49,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:49,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 21:24:49,726 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:49,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 948822769, now seen corresponding path program 2 times [2024-06-21 21:24:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240321175] [2024-06-21 21:24:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240321175] [2024-06-21 21:24:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240321175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:50,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:50,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:24:50,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731219901] [2024-06-21 21:24:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:50,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:24:50,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:24:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:24:50,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:50,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 112 transitions, 878 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) [2024-06-21 21:24:50,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:50,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:50,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:51,483 INFO L124 PetriNetUnfolderBase]: 1499/2362 cut-off events. [2024-06-21 21:24:51,483 INFO L125 PetriNetUnfolderBase]: For 24166/24171 co-relation queries the response was YES. [2024-06-21 21:24:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11785 conditions, 2362 events. 1499/2362 cut-off events. For 24166/24171 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11897 event pairs, 366 based on Foata normal form. 16/2366 useless extension candidates. Maximal degree in co-relation 11742. Up to 2013 conditions per place. [2024-06-21 21:24:51,495 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 99 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-21 21:24:51,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 1248 flow [2024-06-21 21:24:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:24:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:24:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-21 21:24:51,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-21 21:24:51,497 INFO L175 Difference]: Start difference. First operand has 97 places, 112 transitions, 878 flow. Second operand 7 states and 134 transitions. [2024-06-21 21:24:51,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 1248 flow [2024-06-21 21:24:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1183 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 21:24:51,533 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 910 flow [2024-06-21 21:24:51,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-21 21:24:51,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-21 21:24:51,534 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 910 flow [2024-06-21 21:24:51,534 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) [2024-06-21 21:24:51,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:51,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:51,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 21:24:51,535 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:51,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2026511123, now seen corresponding path program 3 times [2024-06-21 21:24:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777462226] [2024-06-21 21:24:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777462226] [2024-06-21 21:24:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777462226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:52,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:52,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:24:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848616857] [2024-06-21 21:24:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:24:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:24:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:24:52,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:52,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 910 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) [2024-06-21 21:24:52,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:52,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:52,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:53,275 INFO L124 PetriNetUnfolderBase]: 1519/2402 cut-off events. [2024-06-21 21:24:53,275 INFO L125 PetriNetUnfolderBase]: For 26764/26769 co-relation queries the response was YES. [2024-06-21 21:24:53,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12202 conditions, 2402 events. 1519/2402 cut-off events. For 26764/26769 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12228 event pairs, 376 based on Foata normal form. 8/2398 useless extension candidates. Maximal degree in co-relation 12158. Up to 2109 conditions per place. [2024-06-21 21:24:53,288 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 91 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-06-21 21:24:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 137 transitions, 1280 flow [2024-06-21 21:24:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:24:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:24:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-21 21:24:53,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-21 21:24:53,290 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 910 flow. Second operand 7 states and 134 transitions. [2024-06-21 21:24:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 137 transitions, 1280 flow [2024-06-21 21:24:53,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 137 transitions, 1205 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 21:24:53,326 INFO L231 Difference]: Finished difference. Result has 101 places, 115 transitions, 960 flow [2024-06-21 21:24:53,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=101, PETRI_TRANSITIONS=115} [2024-06-21 21:24:53,326 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-21 21:24:53,327 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 960 flow [2024-06-21 21:24:53,327 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) [2024-06-21 21:24:53,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:53,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 21:24:53,327 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:53,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2026517075, now seen corresponding path program 1 times [2024-06-21 21:24:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:53,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558300260] [2024-06-21 21:24:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:54,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558300260] [2024-06-21 21:24:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558300260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:54,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:24:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536215925] [2024-06-21 21:24:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:24:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:54,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:24:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:24:54,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:54,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 960 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:24:54,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:54,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:54,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:55,551 INFO L124 PetriNetUnfolderBase]: 1626/2519 cut-off events. [2024-06-21 21:24:55,551 INFO L125 PetriNetUnfolderBase]: For 28859/28864 co-relation queries the response was YES. [2024-06-21 21:24:55,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12829 conditions, 2519 events. 1626/2519 cut-off events. For 28859/28864 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12387 event pairs, 402 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 12784. Up to 2229 conditions per place. [2024-06-21 21:24:55,565 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 95 selfloop transitions, 49 changer transitions 0/148 dead transitions. [2024-06-21 21:24:55,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 148 transitions, 1417 flow [2024-06-21 21:24:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:24:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:24:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 21:24:55,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 21:24:55,567 INFO L175 Difference]: Start difference. First operand has 101 places, 115 transitions, 960 flow. Second operand 8 states and 148 transitions. [2024-06-21 21:24:55,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 148 transitions, 1417 flow [2024-06-21 21:24:55,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 148 transitions, 1311 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 21:24:55,598 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 1051 flow [2024-06-21 21:24:55,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1051, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2024-06-21 21:24:55,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-21 21:24:55,598 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 1051 flow [2024-06-21 21:24:55,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:24:55,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:55,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:55,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 21:24:55,599 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:55,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2110294139, now seen corresponding path program 4 times [2024-06-21 21:24:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:55,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024624321] [2024-06-21 21:24:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:55,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024624321] [2024-06-21 21:24:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024624321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:56,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:24:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859883181] [2024-06-21 21:24:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:24:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:24:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:24:57,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-21 21:24:57,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 1051 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) [2024-06-21 21:24:57,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:57,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-21 21:24:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:57,572 INFO L124 PetriNetUnfolderBase]: 1567/2495 cut-off events. [2024-06-21 21:24:57,572 INFO L125 PetriNetUnfolderBase]: For 34944/34956 co-relation queries the response was YES. [2024-06-21 21:24:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 2495 events. 1567/2495 cut-off events. For 34944/34956 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12923 event pairs, 368 based on Foata normal form. 34/2517 useless extension candidates. Maximal degree in co-relation 13321. Up to 2098 conditions per place. [2024-06-21 21:24:57,587 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 119 selfloop transitions, 36 changer transitions 0/162 dead transitions. [2024-06-21 21:24:57,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1695 flow [2024-06-21 21:24:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:24:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:24:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-21 21:24:57,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-21 21:24:57,588 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 1051 flow. Second operand 8 states and 159 transitions. [2024-06-21 21:24:57,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1695 flow [2024-06-21 21:24:57,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1574 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 21:24:57,638 INFO L231 Difference]: Finished difference. Result has 110 places, 129 transitions, 1194 flow [2024-06-21 21:24:57,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=110, PETRI_TRANSITIONS=129} [2024-06-21 21:24:57,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-21 21:24:57,639 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 129 transitions, 1194 flow [2024-06-21 21:24:57,639 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) [2024-06-21 21:24:57,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:57,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 21:24:57,640 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:24:57,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash 437399559, now seen corresponding path program 2 times [2024-06-21 21:24:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956202677] [2024-06-21 21:24:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956202677] [2024-06-21 21:24:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956202677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:24:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829732545] [2024-06-21 21:24:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:24:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:24:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:24:59,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:24:59,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 129 transitions, 1194 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:24:59,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:59,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:24:59,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:00,447 INFO L124 PetriNetUnfolderBase]: 1701/2644 cut-off events. [2024-06-21 21:25:00,448 INFO L125 PetriNetUnfolderBase]: For 40683/40695 co-relation queries the response was YES. [2024-06-21 21:25:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 2644 events. 1701/2644 cut-off events. For 40683/40695 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13306 event pairs, 399 based on Foata normal form. 10/2647 useless extension candidates. Maximal degree in co-relation 14749. Up to 2433 conditions per place. [2024-06-21 21:25:00,465 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 132 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-21 21:25:00,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 170 transitions, 1747 flow [2024-06-21 21:25:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:25:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:25:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-21 21:25:00,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-21 21:25:00,466 INFO L175 Difference]: Start difference. First operand has 110 places, 129 transitions, 1194 flow. Second operand 9 states and 161 transitions. [2024-06-21 21:25:00,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 170 transitions, 1747 flow [2024-06-21 21:25:00,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 1668 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-21 21:25:00,538 INFO L231 Difference]: Finished difference. Result has 117 places, 138 transitions, 1310 flow [2024-06-21 21:25:00,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1310, PETRI_PLACES=117, PETRI_TRANSITIONS=138} [2024-06-21 21:25:00,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-21 21:25:00,539 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 138 transitions, 1310 flow [2024-06-21 21:25:00,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:00,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:00,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 21:25:00,539 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:00,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2110288187, now seen corresponding path program 3 times [2024-06-21 21:25:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40014817] [2024-06-21 21:25:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:02,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40014817] [2024-06-21 21:25:02,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40014817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:02,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:02,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456497634] [2024-06-21 21:25:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:02,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:02,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 138 transitions, 1310 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:02,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:02,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:03,160 INFO L124 PetriNetUnfolderBase]: 1839/2863 cut-off events. [2024-06-21 21:25:03,160 INFO L125 PetriNetUnfolderBase]: For 44267/44267 co-relation queries the response was YES. [2024-06-21 21:25:03,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16364 conditions, 2863 events. 1839/2863 cut-off events. For 44267/44267 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14510 event pairs, 400 based on Foata normal form. 2/2860 useless extension candidates. Maximal degree in co-relation 16311. Up to 2657 conditions per place. [2024-06-21 21:25:03,179 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 160 selfloop transitions, 47 changer transitions 0/211 dead transitions. [2024-06-21 21:25:03,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 211 transitions, 2300 flow [2024-06-21 21:25:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:25:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:25:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-21 21:25:03,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-21 21:25:03,181 INFO L175 Difference]: Start difference. First operand has 117 places, 138 transitions, 1310 flow. Second operand 13 states and 216 transitions. [2024-06-21 21:25:03,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 211 transitions, 2300 flow [2024-06-21 21:25:03,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 211 transitions, 2176 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-21 21:25:03,299 INFO L231 Difference]: Finished difference. Result has 133 places, 175 transitions, 1840 flow [2024-06-21 21:25:03,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1840, PETRI_PLACES=133, PETRI_TRANSITIONS=175} [2024-06-21 21:25:03,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-21 21:25:03,299 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 175 transitions, 1840 flow [2024-06-21 21:25:03,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:03,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:03,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 21:25:03,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:03,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash 792548903, now seen corresponding path program 4 times [2024-06-21 21:25:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059030069] [2024-06-21 21:25:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059030069] [2024-06-21 21:25:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059030069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839535371] [2024-06-21 21:25:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:04,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:04,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:04,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 175 transitions, 1840 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:04,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:04,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:05,632 INFO L124 PetriNetUnfolderBase]: 1905/2972 cut-off events. [2024-06-21 21:25:05,632 INFO L125 PetriNetUnfolderBase]: For 49196/49199 co-relation queries the response was YES. [2024-06-21 21:25:05,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17568 conditions, 2972 events. 1905/2972 cut-off events. For 49196/49199 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15155 event pairs, 401 based on Foata normal form. 4/2969 useless extension candidates. Maximal degree in co-relation 17507. Up to 2590 conditions per place. [2024-06-21 21:25:05,652 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 150 selfloop transitions, 72 changer transitions 0/226 dead transitions. [2024-06-21 21:25:05,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 226 transitions, 2669 flow [2024-06-21 21:25:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:25:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:25:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-21 21:25:05,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-21 21:25:05,654 INFO L175 Difference]: Start difference. First operand has 133 places, 175 transitions, 1840 flow. Second operand 10 states and 178 transitions. [2024-06-21 21:25:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 226 transitions, 2669 flow [2024-06-21 21:25:05,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 226 transitions, 2578 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-21 21:25:05,760 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 2215 flow [2024-06-21 21:25:05,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2215, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2024-06-21 21:25:05,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-21 21:25:05,761 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 2215 flow [2024-06-21 21:25:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:05,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:05,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 21:25:05,761 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:05,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1977419451, now seen corresponding path program 5 times [2024-06-21 21:25:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:05,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508100205] [2024-06-21 21:25:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:05,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:07,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508100205] [2024-06-21 21:25:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508100205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:07,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:07,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730886038] [2024-06-21 21:25:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:07,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:07,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 2215 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:07,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:07,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:07,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:08,579 INFO L124 PetriNetUnfolderBase]: 2015/3147 cut-off events. [2024-06-21 21:25:08,580 INFO L125 PetriNetUnfolderBase]: For 55405/55408 co-relation queries the response was YES. [2024-06-21 21:25:08,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19512 conditions, 3147 events. 2015/3147 cut-off events. For 55405/55408 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16218 event pairs, 406 based on Foata normal form. 4/3144 useless extension candidates. Maximal degree in co-relation 19446. Up to 2877 conditions per place. [2024-06-21 21:25:08,604 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 192 selfloop transitions, 53 changer transitions 0/249 dead transitions. [2024-06-21 21:25:08,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 249 transitions, 3226 flow [2024-06-21 21:25:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:25:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:25:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-21 21:25:08,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-21 21:25:08,606 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 2215 flow. Second operand 11 states and 188 transitions. [2024-06-21 21:25:08,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 249 transitions, 3226 flow [2024-06-21 21:25:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 249 transitions, 3045 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-21 21:25:08,793 INFO L231 Difference]: Finished difference. Result has 155 places, 215 transitions, 2586 flow [2024-06-21 21:25:08,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2586, PETRI_PLACES=155, PETRI_TRANSITIONS=215} [2024-06-21 21:25:08,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-21 21:25:08,794 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 215 transitions, 2586 flow [2024-06-21 21:25:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:08,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:08,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 21:25:08,795 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:08,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -264592507, now seen corresponding path program 6 times [2024-06-21 21:25:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659581560] [2024-06-21 21:25:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659581560] [2024-06-21 21:25:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659581560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890504328] [2024-06-21 21:25:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:10,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:10,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 215 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:10,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:10,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:10,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:11,313 INFO L124 PetriNetUnfolderBase]: 2010/3140 cut-off events. [2024-06-21 21:25:11,314 INFO L125 PetriNetUnfolderBase]: For 58941/58944 co-relation queries the response was YES. [2024-06-21 21:25:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19463 conditions, 3140 events. 2010/3140 cut-off events. For 58941/58944 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16207 event pairs, 406 based on Foata normal form. 4/3137 useless extension candidates. Maximal degree in co-relation 19393. Up to 2640 conditions per place. [2024-06-21 21:25:11,338 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 134 selfloop transitions, 105 changer transitions 0/243 dead transitions. [2024-06-21 21:25:11,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 243 transitions, 3170 flow [2024-06-21 21:25:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:25:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:25:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-21 21:25:11,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-21 21:25:11,339 INFO L175 Difference]: Start difference. First operand has 155 places, 215 transitions, 2586 flow. Second operand 9 states and 161 transitions. [2024-06-21 21:25:11,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 243 transitions, 3170 flow [2024-06-21 21:25:11,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 243 transitions, 2923 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-21 21:25:11,489 INFO L231 Difference]: Finished difference. Result has 158 places, 215 transitions, 2569 flow [2024-06-21 21:25:11,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2569, PETRI_PLACES=158, PETRI_TRANSITIONS=215} [2024-06-21 21:25:11,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-21 21:25:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 215 transitions, 2569 flow [2024-06-21 21:25:11,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-21 21:25:11,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:11,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 21:25:11,490 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1573709370, now seen corresponding path program 1 times [2024-06-21 21:25:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713472347] [2024-06-21 21:25:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713472347] [2024-06-21 21:25:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713472347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:12,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:12,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164213406] [2024-06-21 21:25:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:12,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:12,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:12,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 215 transitions, 2569 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:12,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:12,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:12,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:12,983 INFO L124 PetriNetUnfolderBase]: 2028/3160 cut-off events. [2024-06-21 21:25:12,983 INFO L125 PetriNetUnfolderBase]: For 61886/61886 co-relation queries the response was YES. [2024-06-21 21:25:12,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19757 conditions, 3160 events. 2028/3160 cut-off events. For 61886/61886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16249 event pairs, 449 based on Foata normal form. 2/3159 useless extension candidates. Maximal degree in co-relation 19686. Up to 3010 conditions per place. [2024-06-21 21:25:13,008 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 214 selfloop transitions, 25 changer transitions 0/243 dead transitions. [2024-06-21 21:25:13,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 243 transitions, 3248 flow [2024-06-21 21:25:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-21 21:25:13,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 21:25:13,010 INFO L175 Difference]: Start difference. First operand has 158 places, 215 transitions, 2569 flow. Second operand 7 states and 125 transitions. [2024-06-21 21:25:13,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 243 transitions, 3248 flow [2024-06-21 21:25:13,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 243 transitions, 2929 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 21:25:13,154 INFO L231 Difference]: Finished difference. Result has 158 places, 224 transitions, 2420 flow [2024-06-21 21:25:13,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2420, PETRI_PLACES=158, PETRI_TRANSITIONS=224} [2024-06-21 21:25:13,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-21 21:25:13,155 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 224 transitions, 2420 flow [2024-06-21 21:25:13,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:13,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:13,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:13,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 21:25:13,156 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:13,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1573559640, now seen corresponding path program 2 times [2024-06-21 21:25:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965576844] [2024-06-21 21:25:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965576844] [2024-06-21 21:25:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965576844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:13,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303292308] [2024-06-21 21:25:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:14,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:14,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 224 transitions, 2420 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:14,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:14,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:14,528 INFO L124 PetriNetUnfolderBase]: 2038/3174 cut-off events. [2024-06-21 21:25:14,528 INFO L125 PetriNetUnfolderBase]: For 53869/53869 co-relation queries the response was YES. [2024-06-21 21:25:14,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19362 conditions, 3174 events. 2038/3174 cut-off events. For 53869/53869 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16323 event pairs, 450 based on Foata normal form. 2/3173 useless extension candidates. Maximal degree in co-relation 19289. Up to 3046 conditions per place. [2024-06-21 21:25:14,553 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 218 selfloop transitions, 20 changer transitions 0/242 dead transitions. [2024-06-21 21:25:14,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 242 transitions, 2979 flow [2024-06-21 21:25:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-21 21:25:14,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 21:25:14,554 INFO L175 Difference]: Start difference. First operand has 158 places, 224 transitions, 2420 flow. Second operand 7 states and 120 transitions. [2024-06-21 21:25:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 242 transitions, 2979 flow [2024-06-21 21:25:14,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 2926 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-21 21:25:14,676 INFO L231 Difference]: Finished difference. Result has 162 places, 227 transitions, 2452 flow [2024-06-21 21:25:14,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2452, PETRI_PLACES=162, PETRI_TRANSITIONS=227} [2024-06-21 21:25:14,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-21 21:25:14,677 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 227 transitions, 2452 flow [2024-06-21 21:25:14,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:14,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:14,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:14,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 21:25:14,678 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:14,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:14,679 INFO L85 PathProgramCache]: Analyzing trace with hash 501956630, now seen corresponding path program 3 times [2024-06-21 21:25:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:14,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320345218] [2024-06-21 21:25:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:14,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320345218] [2024-06-21 21:25:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320345218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:15,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:15,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704841470] [2024-06-21 21:25:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:15,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:15,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:15,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:15,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 227 transitions, 2452 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:15,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:15,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:15,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:16,127 INFO L124 PetriNetUnfolderBase]: 2032/3166 cut-off events. [2024-06-21 21:25:16,127 INFO L125 PetriNetUnfolderBase]: For 56352/56352 co-relation queries the response was YES. [2024-06-21 21:25:16,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19434 conditions, 3166 events. 2032/3166 cut-off events. For 56352/56352 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16255 event pairs, 450 based on Foata normal form. 2/3165 useless extension candidates. Maximal degree in co-relation 19359. Up to 3053 conditions per place. [2024-06-21 21:25:16,153 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 219 selfloop transitions, 15 changer transitions 0/238 dead transitions. [2024-06-21 21:25:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 238 transitions, 2954 flow [2024-06-21 21:25:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-21 21:25:16,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-21 21:25:16,161 INFO L175 Difference]: Start difference. First operand has 162 places, 227 transitions, 2452 flow. Second operand 7 states and 114 transitions. [2024-06-21 21:25:16,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 238 transitions, 2954 flow [2024-06-21 21:25:16,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 238 transitions, 2900 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:16,305 INFO L231 Difference]: Finished difference. Result has 164 places, 227 transitions, 2434 flow [2024-06-21 21:25:16,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2434, PETRI_PLACES=164, PETRI_TRANSITIONS=227} [2024-06-21 21:25:16,306 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-21 21:25:16,307 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 227 transitions, 2434 flow [2024-06-21 21:25:16,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:16,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:16,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:16,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 21:25:16,307 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:16,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -577402083, now seen corresponding path program 1 times [2024-06-21 21:25:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96534794] [2024-06-21 21:25:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:17,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:17,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96534794] [2024-06-21 21:25:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96534794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066386952] [2024-06-21 21:25:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:17,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:17,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 227 transitions, 2434 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:17,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:17,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:17,640 INFO L124 PetriNetUnfolderBase]: 2029/3162 cut-off events. [2024-06-21 21:25:17,640 INFO L125 PetriNetUnfolderBase]: For 58999/58999 co-relation queries the response was YES. [2024-06-21 21:25:17,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19493 conditions, 3162 events. 2029/3162 cut-off events. For 58999/58999 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16250 event pairs, 449 based on Foata normal form. 1/3160 useless extension candidates. Maximal degree in co-relation 19417. Up to 3051 conditions per place. [2024-06-21 21:25:17,720 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 218 selfloop transitions, 17 changer transitions 0/239 dead transitions. [2024-06-21 21:25:17,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 239 transitions, 2964 flow [2024-06-21 21:25:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:25:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:25:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-21 21:25:17,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-21 21:25:17,721 INFO L175 Difference]: Start difference. First operand has 164 places, 227 transitions, 2434 flow. Second operand 6 states and 101 transitions. [2024-06-21 21:25:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 239 transitions, 2964 flow [2024-06-21 21:25:17,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 239 transitions, 2926 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:17,839 INFO L231 Difference]: Finished difference. Result has 165 places, 230 transitions, 2478 flow [2024-06-21 21:25:17,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2478, PETRI_PLACES=165, PETRI_TRANSITIONS=230} [2024-06-21 21:25:17,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-21 21:25:17,840 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 230 transitions, 2478 flow [2024-06-21 21:25:17,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:17,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:17,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 21:25:17,840 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:17,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1573529872, now seen corresponding path program 1 times [2024-06-21 21:25:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636482460] [2024-06-21 21:25:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636482460] [2024-06-21 21:25:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636482460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:19,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:25:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825654075] [2024-06-21 21:25:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:25:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:25:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:25:19,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:19,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 230 transitions, 2478 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:19,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:19,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:19,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:20,213 INFO L124 PetriNetUnfolderBase]: 2104/3301 cut-off events. [2024-06-21 21:25:20,213 INFO L125 PetriNetUnfolderBase]: For 66417/66417 co-relation queries the response was YES. [2024-06-21 21:25:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20536 conditions, 3301 events. 2104/3301 cut-off events. For 66417/66417 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17245 event pairs, 382 based on Foata normal form. 16/3307 useless extension candidates. Maximal degree in co-relation 20459. Up to 2517 conditions per place. [2024-06-21 21:25:20,239 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 175 selfloop transitions, 83 changer transitions 0/262 dead transitions. [2024-06-21 21:25:20,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 262 transitions, 3182 flow [2024-06-21 21:25:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:25:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:25:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:25:20,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-21 21:25:20,241 INFO L175 Difference]: Start difference. First operand has 165 places, 230 transitions, 2478 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:25:20,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 262 transitions, 3182 flow [2024-06-21 21:25:20,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 262 transitions, 3134 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:20,368 INFO L231 Difference]: Finished difference. Result has 168 places, 232 transitions, 2650 flow [2024-06-21 21:25:20,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2650, PETRI_PLACES=168, PETRI_TRANSITIONS=232} [2024-06-21 21:25:20,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-21 21:25:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 232 transitions, 2650 flow [2024-06-21 21:25:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:20,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:20,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 21:25:20,369 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:20,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -459714621, now seen corresponding path program 1 times [2024-06-21 21:25:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585941814] [2024-06-21 21:25:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585941814] [2024-06-21 21:25:21,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585941814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:21,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540900230] [2024-06-21 21:25:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:21,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:21,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 232 transitions, 2650 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:21,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:21,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:21,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:21,746 INFO L124 PetriNetUnfolderBase]: 2156/3364 cut-off events. [2024-06-21 21:25:21,746 INFO L125 PetriNetUnfolderBase]: For 68447/68450 co-relation queries the response was YES. [2024-06-21 21:25:21,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21540 conditions, 3364 events. 2156/3364 cut-off events. For 68447/68450 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17589 event pairs, 416 based on Foata normal form. 6/3363 useless extension candidates. Maximal degree in co-relation 21463. Up to 3114 conditions per place. [2024-06-21 21:25:21,774 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 208 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-06-21 21:25:21,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 259 transitions, 3398 flow [2024-06-21 21:25:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-21 21:25:21,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 21:25:21,775 INFO L175 Difference]: Start difference. First operand has 168 places, 232 transitions, 2650 flow. Second operand 7 states and 125 transitions. [2024-06-21 21:25:21,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 259 transitions, 3398 flow [2024-06-21 21:25:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 259 transitions, 3232 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 21:25:21,914 INFO L231 Difference]: Finished difference. Result has 170 places, 241 transitions, 2725 flow [2024-06-21 21:25:21,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2725, PETRI_PLACES=170, PETRI_TRANSITIONS=241} [2024-06-21 21:25:21,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-21 21:25:21,914 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 241 transitions, 2725 flow [2024-06-21 21:25:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:21,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:21,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 21:25:21,915 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:21,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 431747841, now seen corresponding path program 2 times [2024-06-21 21:25:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896948137] [2024-06-21 21:25:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:22,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:22,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896948137] [2024-06-21 21:25:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896948137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:22,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331006541] [2024-06-21 21:25:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:22,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:22,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:22,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 241 transitions, 2725 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:22,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:22,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:22,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:23,228 INFO L124 PetriNetUnfolderBase]: 2144/3360 cut-off events. [2024-06-21 21:25:23,228 INFO L125 PetriNetUnfolderBase]: For 71048/71051 co-relation queries the response was YES. [2024-06-21 21:25:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21727 conditions, 3360 events. 2144/3360 cut-off events. For 71048/71051 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17627 event pairs, 418 based on Foata normal form. 6/3359 useless extension candidates. Maximal degree in co-relation 21648. Up to 3195 conditions per place. [2024-06-21 21:25:23,255 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 222 selfloop transitions, 26 changer transitions 0/252 dead transitions. [2024-06-21 21:25:23,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 252 transitions, 3269 flow [2024-06-21 21:25:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:25:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:25:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-21 21:25:23,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 21:25:23,256 INFO L175 Difference]: Start difference. First operand has 170 places, 241 transitions, 2725 flow. Second operand 6 states and 104 transitions. [2024-06-21 21:25:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 252 transitions, 3269 flow [2024-06-21 21:25:23,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 252 transitions, 3184 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-21 21:25:23,429 INFO L231 Difference]: Finished difference. Result has 173 places, 241 transitions, 2702 flow [2024-06-21 21:25:23,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2702, PETRI_PLACES=173, PETRI_TRANSITIONS=241} [2024-06-21 21:25:23,429 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-21 21:25:23,429 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 241 transitions, 2702 flow [2024-06-21 21:25:23,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:23,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:23,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:23,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 21:25:23,430 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1224944862, now seen corresponding path program 2 times [2024-06-21 21:25:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:23,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042222525] [2024-06-21 21:25:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042222525] [2024-06-21 21:25:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042222525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970553420] [2024-06-21 21:25:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:24,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:24,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 241 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:24,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:24,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:24,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:25,453 INFO L124 PetriNetUnfolderBase]: 2321/3661 cut-off events. [2024-06-21 21:25:25,454 INFO L125 PetriNetUnfolderBase]: For 78006/78009 co-relation queries the response was YES. [2024-06-21 21:25:25,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3661 events. 2321/3661 cut-off events. For 78006/78009 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19775 event pairs, 431 based on Foata normal form. 14/3668 useless extension candidates. Maximal degree in co-relation 23413. Up to 2430 conditions per place. [2024-06-21 21:25:25,485 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 179 selfloop transitions, 104 changer transitions 0/287 dead transitions. [2024-06-21 21:25:25,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 287 transitions, 3684 flow [2024-06-21 21:25:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:25:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:25:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 21:25:25,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-21 21:25:25,486 INFO L175 Difference]: Start difference. First operand has 173 places, 241 transitions, 2702 flow. Second operand 9 states and 170 transitions. [2024-06-21 21:25:25,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 287 transitions, 3684 flow [2024-06-21 21:25:25,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 287 transitions, 3609 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:25,657 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 2987 flow [2024-06-21 21:25:25,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2987, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-06-21 21:25:25,658 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-21 21:25:25,658 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 2987 flow [2024-06-21 21:25:25,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:25,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:25,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:25,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 21:25:25,658 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:25,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1224705852, now seen corresponding path program 3 times [2024-06-21 21:25:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931176295] [2024-06-21 21:25:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931176295] [2024-06-21 21:25:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931176295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:25:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424925052] [2024-06-21 21:25:27,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:27,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:25:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:25:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:25:27,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:27,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 2987 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:27,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:27,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:27,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:28,537 INFO L124 PetriNetUnfolderBase]: 2396/3786 cut-off events. [2024-06-21 21:25:28,537 INFO L125 PetriNetUnfolderBase]: For 89050/89053 co-relation queries the response was YES. [2024-06-21 21:25:28,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25023 conditions, 3786 events. 2396/3786 cut-off events. For 89050/89053 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20700 event pairs, 485 based on Foata normal form. 18/3797 useless extension candidates. Maximal degree in co-relation 24941. Up to 3149 conditions per place. [2024-06-21 21:25:28,645 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 184 selfloop transitions, 97 changer transitions 0/285 dead transitions. [2024-06-21 21:25:28,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 285 transitions, 3773 flow [2024-06-21 21:25:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:25:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:25:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-21 21:25:28,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 21:25:28,646 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 2987 flow. Second operand 10 states and 180 transitions. [2024-06-21 21:25:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 285 transitions, 3773 flow [2024-06-21 21:25:28,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 285 transitions, 3691 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 21:25:28,787 INFO L231 Difference]: Finished difference. Result has 184 places, 248 transitions, 3170 flow [2024-06-21 21:25:28,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3170, PETRI_PLACES=184, PETRI_TRANSITIONS=248} [2024-06-21 21:25:28,787 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-21 21:25:28,788 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 248 transitions, 3170 flow [2024-06-21 21:25:28,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:28,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:28,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:28,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 21:25:28,788 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:28,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1218449742, now seen corresponding path program 4 times [2024-06-21 21:25:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:28,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424420436] [2024-06-21 21:25:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:28,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:31,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:31,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424420436] [2024-06-21 21:25:31,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424420436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:31,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:31,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:25:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579738940] [2024-06-21 21:25:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:31,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:25:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:25:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:25:31,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:31,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 248 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:31,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:31,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:31,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:32,692 INFO L124 PetriNetUnfolderBase]: 2429/3845 cut-off events. [2024-06-21 21:25:32,692 INFO L125 PetriNetUnfolderBase]: For 94158/94161 co-relation queries the response was YES. [2024-06-21 21:25:32,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25762 conditions, 3845 events. 2429/3845 cut-off events. For 94158/94161 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21125 event pairs, 493 based on Foata normal form. 18/3856 useless extension candidates. Maximal degree in co-relation 25678. Up to 3209 conditions per place. [2024-06-21 21:25:32,728 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 174 selfloop transitions, 107 changer transitions 0/285 dead transitions. [2024-06-21 21:25:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 285 transitions, 3929 flow [2024-06-21 21:25:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:25:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:25:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-21 21:25:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-06-21 21:25:32,730 INFO L175 Difference]: Start difference. First operand has 184 places, 248 transitions, 3170 flow. Second operand 10 states and 179 transitions. [2024-06-21 21:25:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 285 transitions, 3929 flow [2024-06-21 21:25:32,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 285 transitions, 3727 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 21:25:32,951 INFO L231 Difference]: Finished difference. Result has 186 places, 249 transitions, 3234 flow [2024-06-21 21:25:32,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=186, PETRI_TRANSITIONS=249} [2024-06-21 21:25:32,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-21 21:25:32,953 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 249 transitions, 3234 flow [2024-06-21 21:25:32,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:32,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:32,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 21:25:32,953 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:32,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash 431756769, now seen corresponding path program 1 times [2024-06-21 21:25:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559897809] [2024-06-21 21:25:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559897809] [2024-06-21 21:25:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559897809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:34,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:34,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:25:34,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507307356] [2024-06-21 21:25:34,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:25:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:25:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:25:34,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:34,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 249 transitions, 3234 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:34,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:34,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:34,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:35,075 INFO L124 PetriNetUnfolderBase]: 2473/3908 cut-off events. [2024-06-21 21:25:35,075 INFO L125 PetriNetUnfolderBase]: For 98114/98114 co-relation queries the response was YES. [2024-06-21 21:25:35,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26211 conditions, 3908 events. 2473/3908 cut-off events. For 98114/98114 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21504 event pairs, 516 based on Foata normal form. 12/3910 useless extension candidates. Maximal degree in co-relation 26126. Up to 3654 conditions per place. [2024-06-21 21:25:35,108 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 231 selfloop transitions, 31 changer transitions 0/266 dead transitions. [2024-06-21 21:25:35,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 266 transitions, 3872 flow [2024-06-21 21:25:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:25:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:25:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-21 21:25:35,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-21 21:25:35,110 INFO L175 Difference]: Start difference. First operand has 186 places, 249 transitions, 3234 flow. Second operand 6 states and 109 transitions. [2024-06-21 21:25:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 266 transitions, 3872 flow [2024-06-21 21:25:35,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 266 transitions, 3647 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 21:25:35,311 INFO L231 Difference]: Finished difference. Result has 184 places, 250 transitions, 3093 flow [2024-06-21 21:25:35,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3093, PETRI_PLACES=184, PETRI_TRANSITIONS=250} [2024-06-21 21:25:35,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-21 21:25:35,311 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 250 transitions, 3093 flow [2024-06-21 21:25:35,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:35,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:35,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:35,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 21:25:35,312 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:35,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash -138160383, now seen corresponding path program 3 times [2024-06-21 21:25:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:35,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887489797] [2024-06-21 21:25:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:36,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887489797] [2024-06-21 21:25:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887489797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:36,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054478027] [2024-06-21 21:25:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:36,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:36,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 250 transitions, 3093 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:36,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:36,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:36,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:36,838 INFO L124 PetriNetUnfolderBase]: 2493/3941 cut-off events. [2024-06-21 21:25:36,838 INFO L125 PetriNetUnfolderBase]: For 96755/96758 co-relation queries the response was YES. [2024-06-21 21:25:36,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26153 conditions, 3941 events. 2493/3941 cut-off events. For 96755/96758 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21791 event pairs, 507 based on Foata normal form. 6/3940 useless extension candidates. Maximal degree in co-relation 26067. Up to 3713 conditions per place. [2024-06-21 21:25:36,874 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 234 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-21 21:25:36,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 273 transitions, 3781 flow [2024-06-21 21:25:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-21 21:25:36,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-21 21:25:36,875 INFO L175 Difference]: Start difference. First operand has 184 places, 250 transitions, 3093 flow. Second operand 7 states and 124 transitions. [2024-06-21 21:25:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 273 transitions, 3781 flow [2024-06-21 21:25:37,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 273 transitions, 3723 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 21:25:37,081 INFO L231 Difference]: Finished difference. Result has 187 places, 253 transitions, 3169 flow [2024-06-21 21:25:37,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3169, PETRI_PLACES=187, PETRI_TRANSITIONS=253} [2024-06-21 21:25:37,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-21 21:25:37,081 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 253 transitions, 3169 flow [2024-06-21 21:25:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:37,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:37,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 21:25:37,082 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:37,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -125780223, now seen corresponding path program 4 times [2024-06-21 21:25:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450696329] [2024-06-21 21:25:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450696329] [2024-06-21 21:25:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450696329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:37,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:37,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324821322] [2024-06-21 21:25:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:37,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:37,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:37,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 253 transitions, 3169 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:37,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:37,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:37,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:38,433 INFO L124 PetriNetUnfolderBase]: 2537/4006 cut-off events. [2024-06-21 21:25:38,433 INFO L125 PetriNetUnfolderBase]: For 104961/104964 co-relation queries the response was YES. [2024-06-21 21:25:38,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27194 conditions, 4006 events. 2537/4006 cut-off events. For 104961/104964 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22190 event pairs, 512 based on Foata normal form. 6/4005 useless extension candidates. Maximal degree in co-relation 27107. Up to 3667 conditions per place. [2024-06-21 21:25:38,470 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 223 selfloop transitions, 55 changer transitions 0/282 dead transitions. [2024-06-21 21:25:38,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 282 transitions, 4027 flow [2024-06-21 21:25:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-21 21:25:38,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-21 21:25:38,471 INFO L175 Difference]: Start difference. First operand has 187 places, 253 transitions, 3169 flow. Second operand 7 states and 127 transitions. [2024-06-21 21:25:38,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 282 transitions, 4027 flow [2024-06-21 21:25:38,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 282 transitions, 3921 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-21 21:25:38,674 INFO L231 Difference]: Finished difference. Result has 191 places, 262 transitions, 3346 flow [2024-06-21 21:25:38,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3346, PETRI_PLACES=191, PETRI_TRANSITIONS=262} [2024-06-21 21:25:38,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-21 21:25:38,675 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 262 transitions, 3346 flow [2024-06-21 21:25:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:38,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:38,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 21:25:38,676 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1403175061, now seen corresponding path program 5 times [2024-06-21 21:25:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253973265] [2024-06-21 21:25:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:39,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:39,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253973265] [2024-06-21 21:25:39,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253973265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:39,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:39,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325225620] [2024-06-21 21:25:39,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:39,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:39,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 262 transitions, 3346 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:39,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:39,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:39,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:40,113 INFO L124 PetriNetUnfolderBase]: 2557/4040 cut-off events. [2024-06-21 21:25:40,113 INFO L125 PetriNetUnfolderBase]: For 113181/113184 co-relation queries the response was YES. [2024-06-21 21:25:40,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28184 conditions, 4040 events. 2557/4040 cut-off events. For 113181/113184 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22435 event pairs, 521 based on Foata normal form. 6/4039 useless extension candidates. Maximal degree in co-relation 28095. Up to 3822 conditions per place. [2024-06-21 21:25:40,153 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 34 changer transitions 0/280 dead transitions. [2024-06-21 21:25:40,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 280 transitions, 4106 flow [2024-06-21 21:25:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-21 21:25:40,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 21:25:40,154 INFO L175 Difference]: Start difference. First operand has 191 places, 262 transitions, 3346 flow. Second operand 7 states and 120 transitions. [2024-06-21 21:25:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 280 transitions, 4106 flow [2024-06-21 21:25:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 4023 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-21 21:25:40,402 INFO L231 Difference]: Finished difference. Result has 196 places, 265 transitions, 3401 flow [2024-06-21 21:25:40,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3401, PETRI_PLACES=196, PETRI_TRANSITIONS=265} [2024-06-21 21:25:40,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-21 21:25:40,403 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 265 transitions, 3401 flow [2024-06-21 21:25:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:40,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:40,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 21:25:40,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:40,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1979795201, now seen corresponding path program 6 times [2024-06-21 21:25:40,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:40,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067926369] [2024-06-21 21:25:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:40,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067926369] [2024-06-21 21:25:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067926369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:40,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:40,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:25:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956003985] [2024-06-21 21:25:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:25:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:25:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:25:41,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:41,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 265 transitions, 3401 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:41,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:41,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:41,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:41,749 INFO L124 PetriNetUnfolderBase]: 2545/4022 cut-off events. [2024-06-21 21:25:41,749 INFO L125 PetriNetUnfolderBase]: For 113243/113246 co-relation queries the response was YES. [2024-06-21 21:25:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27750 conditions, 4022 events. 2545/4022 cut-off events. For 113243/113246 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22313 event pairs, 523 based on Foata normal form. 6/4021 useless extension candidates. Maximal degree in co-relation 27658. Up to 3850 conditions per place. [2024-06-21 21:25:41,788 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 247 selfloop transitions, 26 changer transitions 0/277 dead transitions. [2024-06-21 21:25:41,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 277 transitions, 4001 flow [2024-06-21 21:25:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-21 21:25:41,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-21 21:25:41,789 INFO L175 Difference]: Start difference. First operand has 196 places, 265 transitions, 3401 flow. Second operand 7 states and 116 transitions. [2024-06-21 21:25:41,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 277 transitions, 4001 flow [2024-06-21 21:25:42,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 277 transitions, 3827 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:42,058 INFO L231 Difference]: Finished difference. Result has 198 places, 265 transitions, 3285 flow [2024-06-21 21:25:42,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3285, PETRI_PLACES=198, PETRI_TRANSITIONS=265} [2024-06-21 21:25:42,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-21 21:25:42,059 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 265 transitions, 3285 flow [2024-06-21 21:25:42,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:42,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:42,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:42,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 21:25:42,060 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:42,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1993613699, now seen corresponding path program 2 times [2024-06-21 21:25:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813642447] [2024-06-21 21:25:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813642447] [2024-06-21 21:25:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813642447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:25:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747044465] [2024-06-21 21:25:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:25:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:25:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:25:43,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:43,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 265 transitions, 3285 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:43,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:43,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:43,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:44,002 INFO L124 PetriNetUnfolderBase]: 2589/4093 cut-off events. [2024-06-21 21:25:44,003 INFO L125 PetriNetUnfolderBase]: For 120855/120855 co-relation queries the response was YES. [2024-06-21 21:25:44,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28049 conditions, 4093 events. 2589/4093 cut-off events. For 120855/120855 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 22783 event pairs, 534 based on Foata normal form. 12/4095 useless extension candidates. Maximal degree in co-relation 27957. Up to 3813 conditions per place. [2024-06-21 21:25:44,040 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 248 selfloop transitions, 33 changer transitions 0/285 dead transitions. [2024-06-21 21:25:44,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 285 transitions, 3999 flow [2024-06-21 21:25:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-21 21:25:44,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-21 21:25:44,041 INFO L175 Difference]: Start difference. First operand has 198 places, 265 transitions, 3285 flow. Second operand 7 states and 123 transitions. [2024-06-21 21:25:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 285 transitions, 3999 flow [2024-06-21 21:25:44,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 285 transitions, 3878 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 21:25:44,285 INFO L231 Difference]: Finished difference. Result has 198 places, 266 transitions, 3251 flow [2024-06-21 21:25:44,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=198, PETRI_TRANSITIONS=266} [2024-06-21 21:25:44,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-21 21:25:44,285 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 266 transitions, 3251 flow [2024-06-21 21:25:44,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:44,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:44,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:44,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 21:25:44,286 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:44,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1994088929, now seen corresponding path program 3 times [2024-06-21 21:25:44,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882647809] [2024-06-21 21:25:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882647809] [2024-06-21 21:25:45,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882647809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:45,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:45,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:45,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170529514] [2024-06-21 21:25:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:45,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:45,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:45,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 266 transitions, 3251 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:45,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:45,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:45,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:46,113 INFO L124 PetriNetUnfolderBase]: 2591/4099 cut-off events. [2024-06-21 21:25:46,113 INFO L125 PetriNetUnfolderBase]: For 121188/121188 co-relation queries the response was YES. [2024-06-21 21:25:46,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27973 conditions, 4099 events. 2591/4099 cut-off events. For 121188/121188 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22815 event pairs, 524 based on Foata normal form. 8/4097 useless extension candidates. Maximal degree in co-relation 27881. Up to 3729 conditions per place. [2024-06-21 21:25:46,154 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 249 selfloop transitions, 35 changer transitions 0/288 dead transitions. [2024-06-21 21:25:46,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 288 transitions, 3995 flow [2024-06-21 21:25:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-21 21:25:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-21 21:25:46,156 INFO L175 Difference]: Start difference. First operand has 198 places, 266 transitions, 3251 flow. Second operand 7 states and 124 transitions. [2024-06-21 21:25:46,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 288 transitions, 3995 flow [2024-06-21 21:25:46,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 288 transitions, 3926 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:46,455 INFO L231 Difference]: Finished difference. Result has 200 places, 267 transitions, 3274 flow [2024-06-21 21:25:46,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3274, PETRI_PLACES=200, PETRI_TRANSITIONS=267} [2024-06-21 21:25:46,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-21 21:25:46,456 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 267 transitions, 3274 flow [2024-06-21 21:25:46,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:46,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:46,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:46,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 21:25:46,456 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:46,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash -130533887, now seen corresponding path program 1 times [2024-06-21 21:25:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962861770] [2024-06-21 21:25:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962861770] [2024-06-21 21:25:47,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962861770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:47,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:47,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844191697] [2024-06-21 21:25:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:47,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:47,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 267 transitions, 3274 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:47,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:47,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:47,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:48,281 INFO L124 PetriNetUnfolderBase]: 2651/4188 cut-off events. [2024-06-21 21:25:48,281 INFO L125 PetriNetUnfolderBase]: For 130394/130397 co-relation queries the response was YES. [2024-06-21 21:25:48,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28723 conditions, 4188 events. 2651/4188 cut-off events. For 130394/130397 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 23400 event pairs, 533 based on Foata normal form. 14/4195 useless extension candidates. Maximal degree in co-relation 28630. Up to 3687 conditions per place. [2024-06-21 21:25:48,333 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 227 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2024-06-21 21:25:48,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 296 transitions, 4056 flow [2024-06-21 21:25:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:25:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:25:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-21 21:25:48,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-21 21:25:48,339 INFO L175 Difference]: Start difference. First operand has 200 places, 267 transitions, 3274 flow. Second operand 8 states and 146 transitions. [2024-06-21 21:25:48,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 296 transitions, 4056 flow [2024-06-21 21:25:48,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 296 transitions, 3980 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:48,659 INFO L231 Difference]: Finished difference. Result has 203 places, 272 transitions, 3430 flow [2024-06-21 21:25:48,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3430, PETRI_PLACES=203, PETRI_TRANSITIONS=272} [2024-06-21 21:25:48,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-21 21:25:48,659 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 272 transitions, 3430 flow [2024-06-21 21:25:48,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:48,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:48,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:48,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 21:25:48,660 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:48,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -130413917, now seen corresponding path program 2 times [2024-06-21 21:25:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806083229] [2024-06-21 21:25:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806083229] [2024-06-21 21:25:49,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806083229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:49,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:49,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940730306] [2024-06-21 21:25:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:49,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:49,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 272 transitions, 3430 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:49,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:49,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:49,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:50,536 INFO L124 PetriNetUnfolderBase]: 2669/4206 cut-off events. [2024-06-21 21:25:50,536 INFO L125 PetriNetUnfolderBase]: For 132779/132779 co-relation queries the response was YES. [2024-06-21 21:25:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29836 conditions, 4206 events. 2669/4206 cut-off events. For 132779/132779 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23451 event pairs, 572 based on Foata normal form. 2/4205 useless extension candidates. Maximal degree in co-relation 29742. Up to 3989 conditions per place. [2024-06-21 21:25:50,582 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 263 selfloop transitions, 37 changer transitions 0/304 dead transitions. [2024-06-21 21:25:50,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 304 transitions, 4367 flow [2024-06-21 21:25:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:25:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:25:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 21:25:50,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-21 21:25:50,583 INFO L175 Difference]: Start difference. First operand has 203 places, 272 transitions, 3430 flow. Second operand 8 states and 141 transitions. [2024-06-21 21:25:50,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 304 transitions, 4367 flow [2024-06-21 21:25:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 304 transitions, 4156 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-21 21:25:50,910 INFO L231 Difference]: Finished difference. Result has 207 places, 283 transitions, 3511 flow [2024-06-21 21:25:50,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3511, PETRI_PLACES=207, PETRI_TRANSITIONS=283} [2024-06-21 21:25:50,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-21 21:25:50,910 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 283 transitions, 3511 flow [2024-06-21 21:25:50,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:50,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:50,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:50,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 21:25:50,911 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:50,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1535707371, now seen corresponding path program 3 times [2024-06-21 21:25:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:50,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319719084] [2024-06-21 21:25:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:51,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:51,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319719084] [2024-06-21 21:25:51,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319719084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:51,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:51,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:25:51,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672451521] [2024-06-21 21:25:51,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:51,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:25:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:25:51,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:25:51,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:51,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 283 transitions, 3511 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:51,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:51,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:51,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:52,589 INFO L124 PetriNetUnfolderBase]: 2689/4234 cut-off events. [2024-06-21 21:25:52,589 INFO L125 PetriNetUnfolderBase]: For 139626/139626 co-relation queries the response was YES. [2024-06-21 21:25:52,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30059 conditions, 4234 events. 2689/4234 cut-off events. For 139626/139626 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23575 event pairs, 576 based on Foata normal form. 4/4235 useless extension candidates. Maximal degree in co-relation 29962. Up to 4062 conditions per place. [2024-06-21 21:25:52,634 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 277 selfloop transitions, 25 changer transitions 0/306 dead transitions. [2024-06-21 21:25:52,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 306 transitions, 4292 flow [2024-06-21 21:25:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:25:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:25:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-21 21:25:52,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:25:52,636 INFO L175 Difference]: Start difference. First operand has 207 places, 283 transitions, 3511 flow. Second operand 8 states and 135 transitions. [2024-06-21 21:25:52,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 306 transitions, 4292 flow [2024-06-21 21:25:52,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 306 transitions, 4199 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-21 21:25:52,918 INFO L231 Difference]: Finished difference. Result has 212 places, 288 transitions, 3576 flow [2024-06-21 21:25:52,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3576, PETRI_PLACES=212, PETRI_TRANSITIONS=288} [2024-06-21 21:25:52,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-21 21:25:52,919 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 288 transitions, 3576 flow [2024-06-21 21:25:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:52,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:52,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 21:25:52,919 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:52,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -125765343, now seen corresponding path program 1 times [2024-06-21 21:25:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234643729] [2024-06-21 21:25:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:53,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234643729] [2024-06-21 21:25:53,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234643729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:53,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:53,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:25:53,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466353394] [2024-06-21 21:25:53,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:53,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:25:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:25:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:25:53,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:53,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 288 transitions, 3576 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:53,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:53,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:53,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:54,726 INFO L124 PetriNetUnfolderBase]: 2697/4246 cut-off events. [2024-06-21 21:25:54,726 INFO L125 PetriNetUnfolderBase]: For 144566/144566 co-relation queries the response was YES. [2024-06-21 21:25:54,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30587 conditions, 4246 events. 2697/4246 cut-off events. For 144566/144566 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23668 event pairs, 578 based on Foata normal form. 2/4245 useless extension candidates. Maximal degree in co-relation 30488. Up to 4092 conditions per place. [2024-06-21 21:25:54,774 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 282 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-21 21:25:54,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 305 transitions, 4270 flow [2024-06-21 21:25:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-21 21:25:54,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:25:54,775 INFO L175 Difference]: Start difference. First operand has 212 places, 288 transitions, 3576 flow. Second operand 7 states and 119 transitions. [2024-06-21 21:25:54,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 305 transitions, 4270 flow [2024-06-21 21:25:55,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 305 transitions, 4164 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 21:25:55,108 INFO L231 Difference]: Finished difference. Result has 213 places, 290 transitions, 3553 flow [2024-06-21 21:25:55,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3553, PETRI_PLACES=213, PETRI_TRANSITIONS=290} [2024-06-21 21:25:55,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-21 21:25:55,109 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 290 transitions, 3553 flow [2024-06-21 21:25:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:55,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:55,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:55,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 21:25:55,109 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:55,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1853163779, now seen corresponding path program 2 times [2024-06-21 21:25:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:55,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274363413] [2024-06-21 21:25:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:55,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:55,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274363413] [2024-06-21 21:25:55,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274363413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:55,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:55,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:25:55,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337286280] [2024-06-21 21:25:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:55,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:25:55,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:25:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:25:56,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:56,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 290 transitions, 3553 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:56,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:56,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:56,847 INFO L124 PetriNetUnfolderBase]: 2705/4258 cut-off events. [2024-06-21 21:25:56,848 INFO L125 PetriNetUnfolderBase]: For 150556/150556 co-relation queries the response was YES. [2024-06-21 21:25:56,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30845 conditions, 4258 events. 2705/4258 cut-off events. For 150556/150556 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23688 event pairs, 586 based on Foata normal form. 2/4257 useless extension candidates. Maximal degree in co-relation 30745. Up to 4114 conditions per place. [2024-06-21 21:25:56,894 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 284 selfloop transitions, 15 changer transitions 0/303 dead transitions. [2024-06-21 21:25:56,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 303 transitions, 4221 flow [2024-06-21 21:25:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-21 21:25:56,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-21 21:25:56,895 INFO L175 Difference]: Start difference. First operand has 213 places, 290 transitions, 3553 flow. Second operand 7 states and 113 transitions. [2024-06-21 21:25:56,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 303 transitions, 4221 flow [2024-06-21 21:25:57,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 303 transitions, 4154 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:57,342 INFO L231 Difference]: Finished difference. Result has 215 places, 292 transitions, 3565 flow [2024-06-21 21:25:57,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3486, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3565, PETRI_PLACES=215, PETRI_TRANSITIONS=292} [2024-06-21 21:25:57,342 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-21 21:25:57,343 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 292 transitions, 3565 flow [2024-06-21 21:25:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:57,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:57,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:57,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 21:25:57,343 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:57,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -719593959, now seen corresponding path program 3 times [2024-06-21 21:25:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161756228] [2024-06-21 21:25:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:57,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:25:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:25:58,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:25:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161756228] [2024-06-21 21:25:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161756228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:25:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:25:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:25:58,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093886314] [2024-06-21 21:25:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:25:58,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:25:58,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:25:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:25:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:25:58,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:25:58,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 292 transitions, 3565 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:58,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:25:58,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:25:58,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:25:59,240 INFO L124 PetriNetUnfolderBase]: 2700/4247 cut-off events. [2024-06-21 21:25:59,241 INFO L125 PetriNetUnfolderBase]: For 154841/154841 co-relation queries the response was YES. [2024-06-21 21:25:59,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30895 conditions, 4247 events. 2700/4247 cut-off events. For 154841/154841 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23601 event pairs, 591 based on Foata normal form. 2/4246 useless extension candidates. Maximal degree in co-relation 30794. Up to 4104 conditions per place. [2024-06-21 21:25:59,282 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 282 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-21 21:25:59,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 305 transitions, 4247 flow [2024-06-21 21:25:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:25:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:25:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-21 21:25:59,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-21 21:25:59,283 INFO L175 Difference]: Start difference. First operand has 215 places, 292 transitions, 3565 flow. Second operand 7 states and 114 transitions. [2024-06-21 21:25:59,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 305 transitions, 4247 flow [2024-06-21 21:25:59,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 305 transitions, 4184 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 21:25:59,687 INFO L231 Difference]: Finished difference. Result has 217 places, 294 transitions, 3594 flow [2024-06-21 21:25:59,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3502, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3594, PETRI_PLACES=217, PETRI_TRANSITIONS=294} [2024-06-21 21:25:59,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-21 21:25:59,688 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 294 transitions, 3594 flow [2024-06-21 21:25:59,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:25:59,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:25:59,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:25:59,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 21:25:59,688 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:25:59,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:25:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -727875113, now seen corresponding path program 4 times [2024-06-21 21:25:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:25:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60061209] [2024-06-21 21:25:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:25:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:25:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60061209] [2024-06-21 21:26:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60061209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263502832] [2024-06-21 21:26:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:00,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:00,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:00,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 294 transitions, 3594 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:00,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:00,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:00,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:01,415 INFO L124 PetriNetUnfolderBase]: 2704/4253 cut-off events. [2024-06-21 21:26:01,415 INFO L125 PetriNetUnfolderBase]: For 161046/161046 co-relation queries the response was YES. [2024-06-21 21:26:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31075 conditions, 4253 events. 2704/4253 cut-off events. For 161046/161046 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23660 event pairs, 588 based on Foata normal form. 4/4254 useless extension candidates. Maximal degree in co-relation 30973. Up to 4100 conditions per place. [2024-06-21 21:26:01,465 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 287 selfloop transitions, 20 changer transitions 0/311 dead transitions. [2024-06-21 21:26:01,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 311 transitions, 4337 flow [2024-06-21 21:26:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-21 21:26:01,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 21:26:01,467 INFO L175 Difference]: Start difference. First operand has 217 places, 294 transitions, 3594 flow. Second operand 8 states and 129 transitions. [2024-06-21 21:26:01,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 311 transitions, 4337 flow [2024-06-21 21:26:01,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 311 transitions, 4231 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:01,896 INFO L231 Difference]: Finished difference. Result has 220 places, 297 transitions, 3612 flow [2024-06-21 21:26:01,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3612, PETRI_PLACES=220, PETRI_TRANSITIONS=297} [2024-06-21 21:26:01,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-21 21:26:01,896 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 297 transitions, 3612 flow [2024-06-21 21:26:01,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:01,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:01,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 21:26:01,897 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:01,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1993797963, now seen corresponding path program 1 times [2024-06-21 21:26:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964611528] [2024-06-21 21:26:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964611528] [2024-06-21 21:26:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964611528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:02,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161691085] [2024-06-21 21:26:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:02,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:02,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:02,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 297 transitions, 3612 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:02,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:02,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:02,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:03,699 INFO L124 PetriNetUnfolderBase]: 2701/4249 cut-off events. [2024-06-21 21:26:03,699 INFO L125 PetriNetUnfolderBase]: For 163802/163802 co-relation queries the response was YES. [2024-06-21 21:26:03,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31352 conditions, 4249 events. 2701/4249 cut-off events. For 163802/163802 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23661 event pairs, 589 based on Foata normal form. 1/4247 useless extension candidates. Maximal degree in co-relation 31249. Up to 4103 conditions per place. [2024-06-21 21:26:03,748 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 284 selfloop transitions, 23 changer transitions 0/311 dead transitions. [2024-06-21 21:26:03,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 311 transitions, 4328 flow [2024-06-21 21:26:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:26:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:26:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-21 21:26:03,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 21:26:03,749 INFO L175 Difference]: Start difference. First operand has 220 places, 297 transitions, 3612 flow. Second operand 7 states and 115 transitions. [2024-06-21 21:26:03,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 311 transitions, 4328 flow [2024-06-21 21:26:04,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 311 transitions, 4232 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:04,127 INFO L231 Difference]: Finished difference. Result has 221 places, 300 transitions, 3638 flow [2024-06-21 21:26:04,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3516, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3638, PETRI_PLACES=221, PETRI_TRANSITIONS=300} [2024-06-21 21:26:04,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-21 21:26:04,128 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 300 transitions, 3638 flow [2024-06-21 21:26:04,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:04,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:04,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 21:26:04,129 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:04,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1822605300, now seen corresponding path program 1 times [2024-06-21 21:26:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:04,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81509600] [2024-06-21 21:26:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81509600] [2024-06-21 21:26:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81509600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:05,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:05,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:26:05,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272719948] [2024-06-21 21:26:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:05,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:26:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:26:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:26:05,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:05,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 300 transitions, 3638 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:05,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:05,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:05,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:06,639 INFO L124 PetriNetUnfolderBase]: 2742/4324 cut-off events. [2024-06-21 21:26:06,639 INFO L125 PetriNetUnfolderBase]: For 177245/177245 co-relation queries the response was YES. [2024-06-21 21:26:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32093 conditions, 4324 events. 2742/4324 cut-off events. For 177245/177245 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24128 event pairs, 399 based on Foata normal form. 12/4326 useless extension candidates. Maximal degree in co-relation 31989. Up to 3964 conditions per place. [2024-06-21 21:26:06,679 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 300 selfloop transitions, 27 changer transitions 0/331 dead transitions. [2024-06-21 21:26:06,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 331 transitions, 4442 flow [2024-06-21 21:26:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:26:06,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-21 21:26:06,681 INFO L175 Difference]: Start difference. First operand has 221 places, 300 transitions, 3638 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:26:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 331 transitions, 4442 flow [2024-06-21 21:26:07,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 331 transitions, 4354 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:07,148 INFO L231 Difference]: Finished difference. Result has 224 places, 303 transitions, 3666 flow [2024-06-21 21:26:07,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3666, PETRI_PLACES=224, PETRI_TRANSITIONS=303} [2024-06-21 21:26:07,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-21 21:26:07,149 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 303 transitions, 3666 flow [2024-06-21 21:26:07,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:07,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:07,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:07,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 21:26:07,150 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:07,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 579819580, now seen corresponding path program 2 times [2024-06-21 21:26:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:07,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910279754] [2024-06-21 21:26:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910279754] [2024-06-21 21:26:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910279754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:26:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85521810] [2024-06-21 21:26:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:26:08,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:26:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:26:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 303 transitions, 3666 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:09,859 INFO L124 PetriNetUnfolderBase]: 2783/4401 cut-off events. [2024-06-21 21:26:09,859 INFO L125 PetriNetUnfolderBase]: For 178487/178487 co-relation queries the response was YES. [2024-06-21 21:26:09,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32704 conditions, 4401 events. 2783/4401 cut-off events. For 178487/178487 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24784 event pairs, 523 based on Foata normal form. 12/4403 useless extension candidates. Maximal degree in co-relation 32599. Up to 3765 conditions per place. [2024-06-21 21:26:09,909 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 251 selfloop transitions, 84 changer transitions 0/339 dead transitions. [2024-06-21 21:26:09,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 339 transitions, 4524 flow [2024-06-21 21:26:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:26:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:26:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-21 21:26:09,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-21 21:26:09,911 INFO L175 Difference]: Start difference. First operand has 224 places, 303 transitions, 3666 flow. Second operand 9 states and 163 transitions. [2024-06-21 21:26:09,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 339 transitions, 4524 flow [2024-06-21 21:26:10,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 339 transitions, 4442 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:10,325 INFO L231 Difference]: Finished difference. Result has 229 places, 307 transitions, 3833 flow [2024-06-21 21:26:10,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3833, PETRI_PLACES=229, PETRI_TRANSITIONS=307} [2024-06-21 21:26:10,325 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-21 21:26:10,325 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 307 transitions, 3833 flow [2024-06-21 21:26:10,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:10,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:10,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:10,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 21:26:10,326 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:10,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 109014664, now seen corresponding path program 3 times [2024-06-21 21:26:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687061187] [2024-06-21 21:26:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687061187] [2024-06-21 21:26:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687061187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:12,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:12,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:26:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796565126] [2024-06-21 21:26:12,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:26:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:26:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:26:12,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:12,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 307 transitions, 3833 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:12,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:12,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:12,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:13,848 INFO L124 PetriNetUnfolderBase]: 2763/4370 cut-off events. [2024-06-21 21:26:13,848 INFO L125 PetriNetUnfolderBase]: For 180201/180204 co-relation queries the response was YES. [2024-06-21 21:26:13,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32481 conditions, 4370 events. 2763/4370 cut-off events. For 180201/180204 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24621 event pairs, 515 based on Foata normal form. 14/4377 useless extension candidates. Maximal degree in co-relation 32374. Up to 3774 conditions per place. [2024-06-21 21:26:13,891 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 99 changer transitions 0/345 dead transitions. [2024-06-21 21:26:13,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 345 transitions, 4694 flow [2024-06-21 21:26:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:26:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:26:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-21 21:26:13,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-21 21:26:13,893 INFO L175 Difference]: Start difference. First operand has 229 places, 307 transitions, 3833 flow. Second operand 10 states and 178 transitions. [2024-06-21 21:26:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 345 transitions, 4694 flow [2024-06-21 21:26:14,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 345 transitions, 4478 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:14,310 INFO L231 Difference]: Finished difference. Result has 234 places, 309 transitions, 3862 flow [2024-06-21 21:26:14,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3862, PETRI_PLACES=234, PETRI_TRANSITIONS=309} [2024-06-21 21:26:14,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-21 21:26:14,311 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 309 transitions, 3862 flow [2024-06-21 21:26:14,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:14,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:14,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:14,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 21:26:14,311 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:14,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 103508134, now seen corresponding path program 4 times [2024-06-21 21:26:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:14,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926520307] [2024-06-21 21:26:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:15,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926520307] [2024-06-21 21:26:15,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926520307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:15,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:26:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293940245] [2024-06-21 21:26:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:26:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:26:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:26:16,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:16,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 309 transitions, 3862 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:16,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:16,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:17,190 INFO L124 PetriNetUnfolderBase]: 2743/4338 cut-off events. [2024-06-21 21:26:17,190 INFO L125 PetriNetUnfolderBase]: For 176698/176701 co-relation queries the response was YES. [2024-06-21 21:26:17,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31812 conditions, 4338 events. 2743/4338 cut-off events. For 176698/176701 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24405 event pairs, 486 based on Foata normal form. 14/4345 useless extension candidates. Maximal degree in co-relation 31703. Up to 3653 conditions per place. [2024-06-21 21:26:17,239 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 243 selfloop transitions, 101 changer transitions 0/348 dead transitions. [2024-06-21 21:26:17,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 348 transitions, 4694 flow [2024-06-21 21:26:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:26:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:26:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-21 21:26:17,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-21 21:26:17,241 INFO L175 Difference]: Start difference. First operand has 234 places, 309 transitions, 3862 flow. Second operand 10 states and 178 transitions. [2024-06-21 21:26:17,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 348 transitions, 4694 flow [2024-06-21 21:26:17,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 348 transitions, 4466 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 21:26:17,701 INFO L231 Difference]: Finished difference. Result has 237 places, 311 transitions, 3854 flow [2024-06-21 21:26:17,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3854, PETRI_PLACES=237, PETRI_TRANSITIONS=311} [2024-06-21 21:26:17,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-21 21:26:17,702 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 311 transitions, 3854 flow [2024-06-21 21:26:17,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:17,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:17,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:17,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 21:26:17,703 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:17,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:17,704 INFO L85 PathProgramCache]: Analyzing trace with hash 177009279, now seen corresponding path program 1 times [2024-06-21 21:26:17,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:17,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206571029] [2024-06-21 21:26:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:18,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:18,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206571029] [2024-06-21 21:26:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206571029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:18,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:18,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:18,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501843621] [2024-06-21 21:26:18,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:18,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 311 transitions, 3854 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:18,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:18,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:19,624 INFO L124 PetriNetUnfolderBase]: 2777/4380 cut-off events. [2024-06-21 21:26:19,624 INFO L125 PetriNetUnfolderBase]: For 182280/182280 co-relation queries the response was YES. [2024-06-21 21:26:19,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32561 conditions, 4380 events. 2777/4380 cut-off events. For 182280/182280 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24554 event pairs, 502 based on Foata normal form. 2/4372 useless extension candidates. Maximal degree in co-relation 32450. Up to 4007 conditions per place. [2024-06-21 21:26:19,677 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 262 selfloop transitions, 70 changer transitions 0/336 dead transitions. [2024-06-21 21:26:19,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 336 transitions, 4878 flow [2024-06-21 21:26:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:26:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:26:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-21 21:26:19,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-21 21:26:19,678 INFO L175 Difference]: Start difference. First operand has 237 places, 311 transitions, 3854 flow. Second operand 7 states and 127 transitions. [2024-06-21 21:26:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 336 transitions, 4878 flow [2024-06-21 21:26:20,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 336 transitions, 4541 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-21 21:26:20,067 INFO L231 Difference]: Finished difference. Result has 237 places, 317 transitions, 3833 flow [2024-06-21 21:26:20,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3833, PETRI_PLACES=237, PETRI_TRANSITIONS=317} [2024-06-21 21:26:20,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-21 21:26:20,068 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 317 transitions, 3833 flow [2024-06-21 21:26:20,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:20,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:20,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:20,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 21:26:20,068 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:20,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:20,069 INFO L85 PathProgramCache]: Analyzing trace with hash 258006269, now seen corresponding path program 2 times [2024-06-21 21:26:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816109335] [2024-06-21 21:26:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:20,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816109335] [2024-06-21 21:26:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816109335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:20,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20301931] [2024-06-21 21:26:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:20,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:20,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 317 transitions, 3833 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:20,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:20,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:21,827 INFO L124 PetriNetUnfolderBase]: 2779/4381 cut-off events. [2024-06-21 21:26:21,827 INFO L125 PetriNetUnfolderBase]: For 186632/186632 co-relation queries the response was YES. [2024-06-21 21:26:21,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32232 conditions, 4381 events. 2779/4381 cut-off events. For 186632/186632 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24570 event pairs, 523 based on Foata normal form. 2/4373 useless extension candidates. Maximal degree in co-relation 32121. Up to 4156 conditions per place. [2024-06-21 21:26:21,876 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 293 selfloop transitions, 36 changer transitions 0/333 dead transitions. [2024-06-21 21:26:21,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 333 transitions, 4649 flow [2024-06-21 21:26:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:26:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:26:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 21:26:21,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:26:21,878 INFO L175 Difference]: Start difference. First operand has 237 places, 317 transitions, 3833 flow. Second operand 6 states and 105 transitions. [2024-06-21 21:26:21,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 333 transitions, 4649 flow [2024-06-21 21:26:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 333 transitions, 4544 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-21 21:26:22,395 INFO L231 Difference]: Finished difference. Result has 240 places, 323 transitions, 3951 flow [2024-06-21 21:26:22,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3951, PETRI_PLACES=240, PETRI_TRANSITIONS=323} [2024-06-21 21:26:22,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-21 21:26:22,396 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 323 transitions, 3951 flow [2024-06-21 21:26:22,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:22,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:22,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 21:26:22,396 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:22,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2089455623, now seen corresponding path program 1 times [2024-06-21 21:26:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:22,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326956909] [2024-06-21 21:26:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326956909] [2024-06-21 21:26:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326956909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575255543] [2024-06-21 21:26:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:23,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:23,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:23,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:23,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 323 transitions, 3951 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:23,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:23,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:23,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:24,193 INFO L124 PetriNetUnfolderBase]: 2831/4456 cut-off events. [2024-06-21 21:26:24,193 INFO L125 PetriNetUnfolderBase]: For 195566/195569 co-relation queries the response was YES. [2024-06-21 21:26:24,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33310 conditions, 4456 events. 2831/4456 cut-off events. For 195566/195569 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24981 event pairs, 491 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 33197. Up to 4066 conditions per place. [2024-06-21 21:26:24,240 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 281 selfloop transitions, 69 changer transitions 0/354 dead transitions. [2024-06-21 21:26:24,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 354 transitions, 5048 flow [2024-06-21 21:26:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 21:26:24,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 21:26:24,241 INFO L175 Difference]: Start difference. First operand has 240 places, 323 transitions, 3951 flow. Second operand 8 states and 144 transitions. [2024-06-21 21:26:24,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 354 transitions, 5048 flow [2024-06-21 21:26:24,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 354 transitions, 4945 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-21 21:26:24,825 INFO L231 Difference]: Finished difference. Result has 245 places, 332 transitions, 4234 flow [2024-06-21 21:26:24,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4234, PETRI_PLACES=245, PETRI_TRANSITIONS=332} [2024-06-21 21:26:24,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-21 21:26:24,826 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 332 transitions, 4234 flow [2024-06-21 21:26:24,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:24,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:24,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:24,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 21:26:24,827 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:24,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash -861993831, now seen corresponding path program 2 times [2024-06-21 21:26:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:24,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303302022] [2024-06-21 21:26:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303302022] [2024-06-21 21:26:25,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303302022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:25,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:25,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633142945] [2024-06-21 21:26:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:25,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:25,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 332 transitions, 4234 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:25,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:25,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:25,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:26,616 INFO L124 PetriNetUnfolderBase]: 2851/4484 cut-off events. [2024-06-21 21:26:26,616 INFO L125 PetriNetUnfolderBase]: For 201058/201061 co-relation queries the response was YES. [2024-06-21 21:26:26,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34429 conditions, 4484 events. 2851/4484 cut-off events. For 201058/201061 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25139 event pairs, 489 based on Foata normal form. 6/4483 useless extension candidates. Maximal degree in co-relation 34315. Up to 4192 conditions per place. [2024-06-21 21:26:26,660 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 297 selfloop transitions, 54 changer transitions 0/355 dead transitions. [2024-06-21 21:26:26,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 355 transitions, 5154 flow [2024-06-21 21:26:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-21 21:26:26,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-21 21:26:26,661 INFO L175 Difference]: Start difference. First operand has 245 places, 332 transitions, 4234 flow. Second operand 8 states and 139 transitions. [2024-06-21 21:26:26,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 355 transitions, 5154 flow [2024-06-21 21:26:27,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 355 transitions, 4975 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:27,340 INFO L231 Difference]: Finished difference. Result has 248 places, 336 transitions, 4284 flow [2024-06-21 21:26:27,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4284, PETRI_PLACES=248, PETRI_TRANSITIONS=336} [2024-06-21 21:26:27,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-21 21:26:27,341 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 336 transitions, 4284 flow [2024-06-21 21:26:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:27,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:27,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 21:26:27,341 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 499282365, now seen corresponding path program 3 times [2024-06-21 21:26:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986479226] [2024-06-21 21:26:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:28,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:28,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986479226] [2024-06-21 21:26:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986479226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:28,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:28,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114377282] [2024-06-21 21:26:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:28,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:28,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:28,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 336 transitions, 4284 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:28,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:28,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:28,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:29,287 INFO L124 PetriNetUnfolderBase]: 2849/4479 cut-off events. [2024-06-21 21:26:29,287 INFO L125 PetriNetUnfolderBase]: For 198460/198460 co-relation queries the response was YES. [2024-06-21 21:26:29,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34158 conditions, 4479 events. 2849/4479 cut-off events. For 198460/198460 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25078 event pairs, 522 based on Foata normal form. 6/4475 useless extension candidates. Maximal degree in co-relation 34043. Up to 4222 conditions per place. [2024-06-21 21:26:29,334 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 301 selfloop transitions, 46 changer transitions 0/351 dead transitions. [2024-06-21 21:26:29,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 351 transitions, 5124 flow [2024-06-21 21:26:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:26:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:26:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-21 21:26:29,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-21 21:26:29,335 INFO L175 Difference]: Start difference. First operand has 248 places, 336 transitions, 4284 flow. Second operand 7 states and 121 transitions. [2024-06-21 21:26:29,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 351 transitions, 5124 flow [2024-06-21 21:26:29,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 351 transitions, 4931 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-21 21:26:29,941 INFO L231 Difference]: Finished difference. Result has 248 places, 339 transitions, 4284 flow [2024-06-21 21:26:29,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4284, PETRI_PLACES=248, PETRI_TRANSITIONS=339} [2024-06-21 21:26:29,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-21 21:26:29,941 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 339 transitions, 4284 flow [2024-06-21 21:26:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:29,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:29,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:29,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 21:26:29,942 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:29,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1840586264, now seen corresponding path program 1 times [2024-06-21 21:26:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:29,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031952982] [2024-06-21 21:26:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031952982] [2024-06-21 21:26:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031952982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:30,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:30,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734450955] [2024-06-21 21:26:30,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:30,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:30,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 339 transitions, 4284 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:30,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:31,883 INFO L124 PetriNetUnfolderBase]: 2843/4471 cut-off events. [2024-06-21 21:26:31,883 INFO L125 PetriNetUnfolderBase]: For 192622/192622 co-relation queries the response was YES. [2024-06-21 21:26:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34080 conditions, 4471 events. 2843/4471 cut-off events. For 192622/192622 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25044 event pairs, 523 based on Foata normal form. 2/4463 useless extension candidates. Maximal degree in co-relation 33965. Up to 4224 conditions per place. [2024-06-21 21:26:31,931 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 301 selfloop transitions, 45 changer transitions 0/350 dead transitions. [2024-06-21 21:26:31,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 350 transitions, 5050 flow [2024-06-21 21:26:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:26:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:26:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-21 21:26:31,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-21 21:26:31,932 INFO L175 Difference]: Start difference. First operand has 248 places, 339 transitions, 4284 flow. Second operand 6 states and 106 transitions. [2024-06-21 21:26:31,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 350 transitions, 5050 flow [2024-06-21 21:26:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 350 transitions, 4853 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:32,575 INFO L231 Difference]: Finished difference. Result has 249 places, 339 transitions, 4199 flow [2024-06-21 21:26:32,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4199, PETRI_PLACES=249, PETRI_TRANSITIONS=339} [2024-06-21 21:26:32,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-21 21:26:32,575 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 339 transitions, 4199 flow [2024-06-21 21:26:32,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:32,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:32,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 21:26:32,576 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:32,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash 248480093, now seen corresponding path program 1 times [2024-06-21 21:26:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163026660] [2024-06-21 21:26:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163026660] [2024-06-21 21:26:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163026660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078510026] [2024-06-21 21:26:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:33,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:33,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 339 transitions, 4199 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:33,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:33,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:33,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:34,655 INFO L124 PetriNetUnfolderBase]: 2825/4445 cut-off events. [2024-06-21 21:26:34,655 INFO L125 PetriNetUnfolderBase]: For 194567/194567 co-relation queries the response was YES. [2024-06-21 21:26:34,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33489 conditions, 4445 events. 2825/4445 cut-off events. For 194567/194567 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24840 event pairs, 401 based on Foata normal form. 8/4443 useless extension candidates. Maximal degree in co-relation 33373. Up to 4103 conditions per place. [2024-06-21 21:26:34,710 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 322 selfloop transitions, 36 changer transitions 0/362 dead transitions. [2024-06-21 21:26:34,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 362 transitions, 5119 flow [2024-06-21 21:26:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:26:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:26:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-21 21:26:34,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-21 21:26:34,711 INFO L175 Difference]: Start difference. First operand has 249 places, 339 transitions, 4199 flow. Second operand 7 states and 127 transitions. [2024-06-21 21:26:34,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 362 transitions, 5119 flow [2024-06-21 21:26:35,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 362 transitions, 5043 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 21:26:35,215 INFO L231 Difference]: Finished difference. Result has 252 places, 339 transitions, 4199 flow [2024-06-21 21:26:35,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4199, PETRI_PLACES=252, PETRI_TRANSITIONS=339} [2024-06-21 21:26:35,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-21 21:26:35,215 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 339 transitions, 4199 flow [2024-06-21 21:26:35,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:35,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:35,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:35,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 21:26:35,216 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:35,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:35,217 INFO L85 PathProgramCache]: Analyzing trace with hash 11846875, now seen corresponding path program 4 times [2024-06-21 21:26:35,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:35,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270699058] [2024-06-21 21:26:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:35,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:36,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270699058] [2024-06-21 21:26:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270699058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:36,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:36,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424932540] [2024-06-21 21:26:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:36,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:36,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:36,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 339 transitions, 4199 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:36,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:36,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:36,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:37,111 INFO L124 PetriNetUnfolderBase]: 2877/4524 cut-off events. [2024-06-21 21:26:37,111 INFO L125 PetriNetUnfolderBase]: For 198245/198248 co-relation queries the response was YES. [2024-06-21 21:26:37,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34493 conditions, 4524 events. 2877/4524 cut-off events. For 198245/198248 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25389 event pairs, 506 based on Foata normal form. 6/4523 useless extension candidates. Maximal degree in co-relation 34376. Up to 4228 conditions per place. [2024-06-21 21:26:37,163 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 325 selfloop transitions, 47 changer transitions 0/376 dead transitions. [2024-06-21 21:26:37,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 376 transitions, 5434 flow [2024-06-21 21:26:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:26:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:26:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-21 21:26:37,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-21 21:26:37,164 INFO L175 Difference]: Start difference. First operand has 252 places, 339 transitions, 4199 flow. Second operand 9 states and 158 transitions. [2024-06-21 21:26:37,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 376 transitions, 5434 flow [2024-06-21 21:26:37,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 376 transitions, 5352 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:37,698 INFO L231 Difference]: Finished difference. Result has 257 places, 348 transitions, 4467 flow [2024-06-21 21:26:37,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4467, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2024-06-21 21:26:37,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-21 21:26:37,698 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 4467 flow [2024-06-21 21:26:37,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:37,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:37,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 21:26:37,699 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:37,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 11996605, now seen corresponding path program 5 times [2024-06-21 21:26:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:37,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941483395] [2024-06-21 21:26:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:37,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:38,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941483395] [2024-06-21 21:26:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941483395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:38,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352012811] [2024-06-21 21:26:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:38,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:38,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 4467 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:38,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:38,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:38,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:39,716 INFO L124 PetriNetUnfolderBase]: 2865/4508 cut-off events. [2024-06-21 21:26:39,716 INFO L125 PetriNetUnfolderBase]: For 204403/204406 co-relation queries the response was YES. [2024-06-21 21:26:39,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34842 conditions, 4508 events. 2865/4508 cut-off events. For 204403/204406 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25331 event pairs, 506 based on Foata normal form. 6/4507 useless extension candidates. Maximal degree in co-relation 34723. Up to 4248 conditions per place. [2024-06-21 21:26:39,768 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 327 selfloop transitions, 39 changer transitions 0/370 dead transitions. [2024-06-21 21:26:39,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 370 transitions, 5349 flow [2024-06-21 21:26:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-21 21:26:39,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-21 21:26:39,769 INFO L175 Difference]: Start difference. First operand has 257 places, 348 transitions, 4467 flow. Second operand 8 states and 138 transitions. [2024-06-21 21:26:39,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 370 transitions, 5349 flow [2024-06-21 21:26:40,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 370 transitions, 5127 flow, removed 90 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:40,521 INFO L231 Difference]: Finished difference. Result has 260 places, 348 transitions, 4330 flow [2024-06-21 21:26:40,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4330, PETRI_PLACES=260, PETRI_TRANSITIONS=348} [2024-06-21 21:26:40,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-21 21:26:40,521 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 348 transitions, 4330 flow [2024-06-21 21:26:40,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:40,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:40,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 21:26:40,522 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:40,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 239748025, now seen corresponding path program 6 times [2024-06-21 21:26:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315173588] [2024-06-21 21:26:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:41,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:41,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315173588] [2024-06-21 21:26:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315173588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928173283] [2024-06-21 21:26:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:41,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 348 transitions, 4330 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:41,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:41,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:42,454 INFO L124 PetriNetUnfolderBase]: 2906/4566 cut-off events. [2024-06-21 21:26:42,455 INFO L125 PetriNetUnfolderBase]: For 205790/205793 co-relation queries the response was YES. [2024-06-21 21:26:42,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35067 conditions, 4566 events. 2906/4566 cut-off events. For 205790/205793 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 25627 event pairs, 510 based on Foata normal form. 4/4563 useless extension candidates. Maximal degree in co-relation 34946. Up to 4097 conditions per place. [2024-06-21 21:26:42,508 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 306 selfloop transitions, 71 changer transitions 0/381 dead transitions. [2024-06-21 21:26:42,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 381 transitions, 5365 flow [2024-06-21 21:26:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 21:26:42,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 21:26:42,509 INFO L175 Difference]: Start difference. First operand has 260 places, 348 transitions, 4330 flow. Second operand 8 states and 145 transitions. [2024-06-21 21:26:42,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 381 transitions, 5365 flow [2024-06-21 21:26:43,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 381 transitions, 5280 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:43,183 INFO L231 Difference]: Finished difference. Result has 263 places, 358 transitions, 4608 flow [2024-06-21 21:26:43,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4608, PETRI_PLACES=263, PETRI_TRANSITIONS=358} [2024-06-21 21:26:43,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-21 21:26:43,184 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 358 transitions, 4608 flow [2024-06-21 21:26:43,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:43,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:43,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 21:26:43,185 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:43,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash -506186459, now seen corresponding path program 7 times [2024-06-21 21:26:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79956509] [2024-06-21 21:26:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:43,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79956509] [2024-06-21 21:26:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79956509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:43,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:43,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:43,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550844695] [2024-06-21 21:26:43,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:43,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:43,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:44,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:44,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 358 transitions, 4608 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:44,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:44,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:44,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:45,051 INFO L124 PetriNetUnfolderBase]: 2940/4607 cut-off events. [2024-06-21 21:26:45,052 INFO L125 PetriNetUnfolderBase]: For 221509/221512 co-relation queries the response was YES. [2024-06-21 21:26:45,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36571 conditions, 4607 events. 2940/4607 cut-off events. For 221509/221512 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 25836 event pairs, 491 based on Foata normal form. 4/4604 useless extension candidates. Maximal degree in co-relation 36448. Up to 4019 conditions per place. [2024-06-21 21:26:45,102 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 280 selfloop transitions, 104 changer transitions 0/388 dead transitions. [2024-06-21 21:26:45,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 388 transitions, 5816 flow [2024-06-21 21:26:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 21:26:45,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 21:26:45,103 INFO L175 Difference]: Start difference. First operand has 263 places, 358 transitions, 4608 flow. Second operand 8 states and 145 transitions. [2024-06-21 21:26:45,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 388 transitions, 5816 flow [2024-06-21 21:26:45,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 388 transitions, 5629 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:45,857 INFO L231 Difference]: Finished difference. Result has 267 places, 365 transitions, 4903 flow [2024-06-21 21:26:45,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4903, PETRI_PLACES=267, PETRI_TRANSITIONS=365} [2024-06-21 21:26:45,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-21 21:26:45,857 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 365 transitions, 4903 flow [2024-06-21 21:26:45,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:45,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:45,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 21:26:45,858 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:45,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -362533079, now seen corresponding path program 8 times [2024-06-21 21:26:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583180618] [2024-06-21 21:26:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:45,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583180618] [2024-06-21 21:26:46,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583180618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:46,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:46,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:46,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124847927] [2024-06-21 21:26:46,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:46,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:46,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 365 transitions, 4903 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:46,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:46,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:46,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:47,790 INFO L124 PetriNetUnfolderBase]: 2960/4635 cut-off events. [2024-06-21 21:26:47,790 INFO L125 PetriNetUnfolderBase]: For 238784/238787 co-relation queries the response was YES. [2024-06-21 21:26:47,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37876 conditions, 4635 events. 2960/4635 cut-off events. For 238784/238787 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25954 event pairs, 485 based on Foata normal form. 6/4634 useless extension candidates. Maximal degree in co-relation 37752. Up to 4270 conditions per place. [2024-06-21 21:26:47,847 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 324 selfloop transitions, 62 changer transitions 0/390 dead transitions. [2024-06-21 21:26:47,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 390 transitions, 5985 flow [2024-06-21 21:26:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 21:26:47,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:26:47,848 INFO L175 Difference]: Start difference. First operand has 267 places, 365 transitions, 4903 flow. Second operand 8 states and 140 transitions. [2024-06-21 21:26:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 390 transitions, 5985 flow [2024-06-21 21:26:48,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 390 transitions, 5806 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-21 21:26:48,567 INFO L231 Difference]: Finished difference. Result has 272 places, 369 transitions, 4997 flow [2024-06-21 21:26:48,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4744, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4997, PETRI_PLACES=272, PETRI_TRANSITIONS=369} [2024-06-21 21:26:48,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-21 21:26:48,568 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 369 transitions, 4997 flow [2024-06-21 21:26:48,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:48,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:48,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:48,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 21:26:48,568 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -362295929, now seen corresponding path program 9 times [2024-06-21 21:26:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:48,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913309243] [2024-06-21 21:26:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:49,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:49,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913309243] [2024-06-21 21:26:49,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913309243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:49,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:49,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:49,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291070363] [2024-06-21 21:26:49,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:49,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:49,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 369 transitions, 4997 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:49,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:50,541 INFO L124 PetriNetUnfolderBase]: 2970/4649 cut-off events. [2024-06-21 21:26:50,541 INFO L125 PetriNetUnfolderBase]: For 241132/241135 co-relation queries the response was YES. [2024-06-21 21:26:50,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38199 conditions, 4649 events. 2970/4649 cut-off events. For 241132/241135 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26062 event pairs, 489 based on Foata normal form. 4/4646 useless extension candidates. Maximal degree in co-relation 38073. Up to 4236 conditions per place. [2024-06-21 21:26:50,596 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 313 selfloop transitions, 75 changer transitions 0/392 dead transitions. [2024-06-21 21:26:50,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 392 transitions, 6004 flow [2024-06-21 21:26:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 21:26:50,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:26:50,597 INFO L175 Difference]: Start difference. First operand has 272 places, 369 transitions, 4997 flow. Second operand 8 states and 140 transitions. [2024-06-21 21:26:50,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 392 transitions, 6004 flow [2024-06-21 21:26:51,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 392 transitions, 5783 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:51,293 INFO L231 Difference]: Finished difference. Result has 274 places, 372 transitions, 5031 flow [2024-06-21 21:26:51,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5031, PETRI_PLACES=274, PETRI_TRANSITIONS=372} [2024-06-21 21:26:51,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-21 21:26:51,294 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 372 transitions, 5031 flow [2024-06-21 21:26:51,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:51,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:51,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 21:26:51,294 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:51,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1223095237, now seen corresponding path program 3 times [2024-06-21 21:26:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102425740] [2024-06-21 21:26:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:52,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102425740] [2024-06-21 21:26:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102425740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742124477] [2024-06-21 21:26:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:52,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:52,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 372 transitions, 5031 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:52,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:52,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:52,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:53,094 INFO L124 PetriNetUnfolderBase]: 2972/4651 cut-off events. [2024-06-21 21:26:53,094 INFO L125 PetriNetUnfolderBase]: For 242911/242911 co-relation queries the response was YES. [2024-06-21 21:26:53,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37965 conditions, 4651 events. 2972/4651 cut-off events. For 242911/242911 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26061 event pairs, 541 based on Foata normal form. 2/4643 useless extension candidates. Maximal degree in co-relation 37838. Up to 4440 conditions per place. [2024-06-21 21:26:53,152 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 349 selfloop transitions, 36 changer transitions 0/389 dead transitions. [2024-06-21 21:26:53,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 389 transitions, 5963 flow [2024-06-21 21:26:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-21 21:26:53,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 21:26:53,154 INFO L175 Difference]: Start difference. First operand has 274 places, 372 transitions, 5031 flow. Second operand 8 states and 129 transitions. [2024-06-21 21:26:53,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 389 transitions, 5963 flow [2024-06-21 21:26:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 389 transitions, 5751 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:53,831 INFO L231 Difference]: Finished difference. Result has 277 places, 378 transitions, 5037 flow [2024-06-21 21:26:53,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5037, PETRI_PLACES=277, PETRI_TRANSITIONS=378} [2024-06-21 21:26:53,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-21 21:26:53,832 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 378 transitions, 5037 flow [2024-06-21 21:26:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 21:26:53,832 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:53,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1082151642, now seen corresponding path program 2 times [2024-06-21 21:26:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988367381] [2024-06-21 21:26:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988367381] [2024-06-21 21:26:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988367381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:54,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808517368] [2024-06-21 21:26:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:54,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:54,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:54,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:54,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:54,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 378 transitions, 5037 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:54,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:54,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:54,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:55,628 INFO L124 PetriNetUnfolderBase]: 2982/4671 cut-off events. [2024-06-21 21:26:55,628 INFO L125 PetriNetUnfolderBase]: For 251942/251942 co-relation queries the response was YES. [2024-06-21 21:26:55,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 4671 events. 2982/4671 cut-off events. For 251942/251942 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26207 event pairs, 537 based on Foata normal form. 2/4663 useless extension candidates. Maximal degree in co-relation 38344. Up to 4411 conditions per place. [2024-06-21 21:26:55,686 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 345 selfloop transitions, 45 changer transitions 0/394 dead transitions. [2024-06-21 21:26:55,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 394 transitions, 6039 flow [2024-06-21 21:26:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:26:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:26:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-21 21:26:55,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 21:26:55,687 INFO L175 Difference]: Start difference. First operand has 277 places, 378 transitions, 5037 flow. Second operand 7 states and 120 transitions. [2024-06-21 21:26:55,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 394 transitions, 6039 flow [2024-06-21 21:26:56,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 394 transitions, 5869 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-21 21:26:56,561 INFO L231 Difference]: Finished difference. Result has 279 places, 381 transitions, 5083 flow [2024-06-21 21:26:56,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5083, PETRI_PLACES=279, PETRI_TRANSITIONS=381} [2024-06-21 21:26:56,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-21 21:26:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 381 transitions, 5083 flow [2024-06-21 21:26:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:56,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:56,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 21:26:56,562 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:56,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1421241789, now seen corresponding path program 10 times [2024-06-21 21:26:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:56,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929447718] [2024-06-21 21:26:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:26:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:26:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:26:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929447718] [2024-06-21 21:26:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929447718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:26:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:26:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:26:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703423687] [2024-06-21 21:26:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:26:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:26:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:26:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:26:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:26:57,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:26:57,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 381 transitions, 5083 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:57,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:26:57,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:26:57,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:26:58,542 INFO L124 PetriNetUnfolderBase]: 3002/4700 cut-off events. [2024-06-21 21:26:58,542 INFO L125 PetriNetUnfolderBase]: For 264849/264852 co-relation queries the response was YES. [2024-06-21 21:26:58,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39156 conditions, 4700 events. 3002/4700 cut-off events. For 264849/264852 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 26428 event pairs, 520 based on Foata normal form. 6/4699 useless extension candidates. Maximal degree in co-relation 39026. Up to 4468 conditions per place. [2024-06-21 21:26:58,600 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 359 selfloop transitions, 38 changer transitions 0/401 dead transitions. [2024-06-21 21:26:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 401 transitions, 6127 flow [2024-06-21 21:26:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:26:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:26:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-21 21:26:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:26:58,601 INFO L175 Difference]: Start difference. First operand has 279 places, 381 transitions, 5083 flow. Second operand 8 states and 133 transitions. [2024-06-21 21:26:58,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 401 transitions, 6127 flow [2024-06-21 21:26:59,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 401 transitions, 5959 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-21 21:26:59,458 INFO L231 Difference]: Finished difference. Result has 281 places, 385 transitions, 5134 flow [2024-06-21 21:26:59,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5134, PETRI_PLACES=281, PETRI_TRANSITIONS=385} [2024-06-21 21:26:59,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-21 21:26:59,459 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 385 transitions, 5134 flow [2024-06-21 21:26:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:26:59,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:26:59,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:26:59,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 21:26:59,459 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:26:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:26:59,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1421478939, now seen corresponding path program 11 times [2024-06-21 21:26:59,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:26:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064227037] [2024-06-21 21:26:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:26:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:26:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:00,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:00,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064227037] [2024-06-21 21:27:00,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064227037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:00,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:27:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383638975] [2024-06-21 21:27:00,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:27:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:27:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:27:00,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 385 transitions, 5134 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:00,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:01,344 INFO L124 PetriNetUnfolderBase]: 3012/4714 cut-off events. [2024-06-21 21:27:01,344 INFO L125 PetriNetUnfolderBase]: For 252249/252252 co-relation queries the response was YES. [2024-06-21 21:27:01,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38861 conditions, 4714 events. 3012/4714 cut-off events. For 252249/252252 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26489 event pairs, 518 based on Foata normal form. 4/4711 useless extension candidates. Maximal degree in co-relation 38731. Up to 4428 conditions per place. [2024-06-21 21:27:01,397 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 349 selfloop transitions, 51 changer transitions 0/404 dead transitions. [2024-06-21 21:27:01,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 404 transitions, 6243 flow [2024-06-21 21:27:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-21 21:27:01,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 21:27:01,398 INFO L175 Difference]: Start difference. First operand has 281 places, 385 transitions, 5134 flow. Second operand 8 states and 134 transitions. [2024-06-21 21:27:01,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 404 transitions, 6243 flow [2024-06-21 21:27:02,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 404 transitions, 6068 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:02,131 INFO L231 Difference]: Finished difference. Result has 283 places, 388 transitions, 5164 flow [2024-06-21 21:27:02,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5164, PETRI_PLACES=283, PETRI_TRANSITIONS=388} [2024-06-21 21:27:02,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-21 21:27:02,132 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 388 transitions, 5164 flow [2024-06-21 21:27:02,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:02,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:02,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 21:27:02,132 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:02,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1244110269, now seen corresponding path program 12 times [2024-06-21 21:27:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805150222] [2024-06-21 21:27:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805150222] [2024-06-21 21:27:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805150222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:02,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:02,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:27:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751101142] [2024-06-21 21:27:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:02,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:27:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:27:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:27:02,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:02,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 388 transitions, 5164 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:02,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:02,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:02,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:03,935 INFO L124 PetriNetUnfolderBase]: 3000/4696 cut-off events. [2024-06-21 21:27:03,935 INFO L125 PetriNetUnfolderBase]: For 253478/253481 co-relation queries the response was YES. [2024-06-21 21:27:03,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38368 conditions, 4696 events. 3000/4696 cut-off events. For 253478/253481 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26382 event pairs, 532 based on Foata normal form. 6/4695 useless extension candidates. Maximal degree in co-relation 38237. Up to 4502 conditions per place. [2024-06-21 21:27:03,996 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 368 selfloop transitions, 30 changer transitions 0/402 dead transitions. [2024-06-21 21:27:03,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 402 transitions, 6044 flow [2024-06-21 21:27:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-21 21:27:03,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:27:03,997 INFO L175 Difference]: Start difference. First operand has 283 places, 388 transitions, 5164 flow. Second operand 8 states and 130 transitions. [2024-06-21 21:27:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 402 transitions, 6044 flow [2024-06-21 21:27:04,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 402 transitions, 5743 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:04,970 INFO L231 Difference]: Finished difference. Result has 285 places, 388 transitions, 4930 flow [2024-06-21 21:27:04,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4863, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4930, PETRI_PLACES=285, PETRI_TRANSITIONS=388} [2024-06-21 21:27:04,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-21 21:27:04,971 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 388 transitions, 4930 flow [2024-06-21 21:27:04,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:04,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:04,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:04,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 21:27:04,971 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1678187986, now seen corresponding path program 3 times [2024-06-21 21:27:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213081629] [2024-06-21 21:27:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:06,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213081629] [2024-06-21 21:27:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213081629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:06,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888979728] [2024-06-21 21:27:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:06,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:06,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 388 transitions, 4930 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:06,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:06,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:06,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:07,154 INFO L124 PetriNetUnfolderBase]: 2994/4689 cut-off events. [2024-06-21 21:27:07,154 INFO L125 PetriNetUnfolderBase]: For 250662/250662 co-relation queries the response was YES. [2024-06-21 21:27:07,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37803 conditions, 4689 events. 2994/4689 cut-off events. For 250662/250662 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26398 event pairs, 522 based on Foata normal form. 2/4681 useless extension candidates. Maximal degree in co-relation 37671. Up to 4370 conditions per place. [2024-06-21 21:27:07,216 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 337 selfloop transitions, 64 changer transitions 0/405 dead transitions. [2024-06-21 21:27:07,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 405 transitions, 5966 flow [2024-06-21 21:27:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:27:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:27:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-21 21:27:07,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-21 21:27:07,217 INFO L175 Difference]: Start difference. First operand has 285 places, 388 transitions, 4930 flow. Second operand 7 states and 121 transitions. [2024-06-21 21:27:07,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 405 transitions, 5966 flow [2024-06-21 21:27:07,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 405 transitions, 5879 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:07,971 INFO L231 Difference]: Finished difference. Result has 286 places, 391 transitions, 5093 flow [2024-06-21 21:27:07,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5093, PETRI_PLACES=286, PETRI_TRANSITIONS=391} [2024-06-21 21:27:07,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-21 21:27:07,971 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 391 transitions, 5093 flow [2024-06-21 21:27:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:07,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:07,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 21:27:07,972 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 252143065, now seen corresponding path program 1 times [2024-06-21 21:27:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270369783] [2024-06-21 21:27:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:09,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:09,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270369783] [2024-06-21 21:27:09,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270369783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:09,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:09,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:27:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245120901] [2024-06-21 21:27:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:09,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:27:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:27:09,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:27:09,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:09,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 391 transitions, 5093 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:09,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:09,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:09,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:10,084 INFO L124 PetriNetUnfolderBase]: 3002/4697 cut-off events. [2024-06-21 21:27:10,084 INFO L125 PetriNetUnfolderBase]: For 261032/261032 co-relation queries the response was YES. [2024-06-21 21:27:10,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38376 conditions, 4697 events. 3002/4697 cut-off events. For 261032/261032 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 26370 event pairs, 543 based on Foata normal form. 2/4696 useless extension candidates. Maximal degree in co-relation 38243. Up to 4510 conditions per place. [2024-06-21 21:27:10,144 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 379 selfloop transitions, 30 changer transitions 0/413 dead transitions. [2024-06-21 21:27:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 413 transitions, 6059 flow [2024-06-21 21:27:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-21 21:27:10,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:27:10,145 INFO L175 Difference]: Start difference. First operand has 286 places, 391 transitions, 5093 flow. Second operand 8 states and 136 transitions. [2024-06-21 21:27:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 413 transitions, 6059 flow [2024-06-21 21:27:10,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 413 transitions, 5851 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:10,890 INFO L231 Difference]: Finished difference. Result has 288 places, 393 transitions, 5012 flow [2024-06-21 21:27:10,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5012, PETRI_PLACES=288, PETRI_TRANSITIONS=393} [2024-06-21 21:27:10,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-21 21:27:10,891 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 393 transitions, 5012 flow [2024-06-21 21:27:10,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:10,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:10,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:10,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 21:27:10,892 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:10,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash 252137113, now seen corresponding path program 1 times [2024-06-21 21:27:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812998904] [2024-06-21 21:27:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:12,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812998904] [2024-06-21 21:27:12,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812998904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:12,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:12,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662772136] [2024-06-21 21:27:12,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:12,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:12,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:12,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 393 transitions, 5012 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:12,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:12,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:12,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:13,295 INFO L124 PetriNetUnfolderBase]: 3004/4700 cut-off events. [2024-06-21 21:27:13,295 INFO L125 PetriNetUnfolderBase]: For 259139/259139 co-relation queries the response was YES. [2024-06-21 21:27:13,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38246 conditions, 4700 events. 3004/4700 cut-off events. For 259139/259139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26401 event pairs, 544 based on Foata normal form. 2/4699 useless extension candidates. Maximal degree in co-relation 38113. Up to 4472 conditions per place. [2024-06-21 21:27:13,360 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 372 selfloop transitions, 42 changer transitions 0/418 dead transitions. [2024-06-21 21:27:13,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 418 transitions, 6046 flow [2024-06-21 21:27:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:27:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:27:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-21 21:27:13,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:27:13,362 INFO L175 Difference]: Start difference. First operand has 288 places, 393 transitions, 5012 flow. Second operand 9 states and 153 transitions. [2024-06-21 21:27:13,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 418 transitions, 6046 flow [2024-06-21 21:27:14,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 418 transitions, 5935 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:14,131 INFO L231 Difference]: Finished difference. Result has 291 places, 396 transitions, 5089 flow [2024-06-21 21:27:14,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5089, PETRI_PLACES=291, PETRI_TRANSITIONS=396} [2024-06-21 21:27:14,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-21 21:27:14,132 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 396 transitions, 5089 flow [2024-06-21 21:27:14,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:14,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:14,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:14,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 21:27:14,132 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:14,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash -362079239, now seen corresponding path program 2 times [2024-06-21 21:27:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113061767] [2024-06-21 21:27:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:15,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113061767] [2024-06-21 21:27:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113061767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:15,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:27:15,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095034644] [2024-06-21 21:27:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:15,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:27:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:27:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:27:15,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:15,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 396 transitions, 5089 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:15,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:15,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:15,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:16,236 INFO L124 PetriNetUnfolderBase]: 3012/4712 cut-off events. [2024-06-21 21:27:16,236 INFO L125 PetriNetUnfolderBase]: For 267533/267533 co-relation queries the response was YES. [2024-06-21 21:27:16,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38758 conditions, 4712 events. 3012/4712 cut-off events. For 267533/267533 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26479 event pairs, 552 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 38624. Up to 4548 conditions per place. [2024-06-21 21:27:16,293 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 389 selfloop transitions, 22 changer transitions 0/415 dead transitions. [2024-06-21 21:27:16,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 415 transitions, 6053 flow [2024-06-21 21:27:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-21 21:27:16,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:27:16,294 INFO L175 Difference]: Start difference. First operand has 291 places, 396 transitions, 5089 flow. Second operand 8 states and 132 transitions. [2024-06-21 21:27:16,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 415 transitions, 6053 flow [2024-06-21 21:27:17,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 415 transitions, 5887 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 21:27:17,214 INFO L231 Difference]: Finished difference. Result has 292 places, 398 transitions, 5040 flow [2024-06-21 21:27:17,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4923, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5040, PETRI_PLACES=292, PETRI_TRANSITIONS=398} [2024-06-21 21:27:17,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-21 21:27:17,215 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 398 transitions, 5040 flow [2024-06-21 21:27:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:17,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:17,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 21:27:17,215 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:17,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash 396242845, now seen corresponding path program 3 times [2024-06-21 21:27:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268246347] [2024-06-21 21:27:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268246347] [2024-06-21 21:27:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268246347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:18,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:27:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547368209] [2024-06-21 21:27:18,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:27:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:27:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:27:18,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:18,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 398 transitions, 5040 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:18,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:18,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:18,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:19,168 INFO L124 PetriNetUnfolderBase]: 3020/4724 cut-off events. [2024-06-21 21:27:19,168 INFO L125 PetriNetUnfolderBase]: For 275040/275040 co-relation queries the response was YES. [2024-06-21 21:27:19,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38946 conditions, 4724 events. 3020/4724 cut-off events. For 275040/275040 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 26552 event pairs, 552 based on Foata normal form. 2/4723 useless extension candidates. Maximal degree in co-relation 38811. Up to 4560 conditions per place. [2024-06-21 21:27:19,228 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 392 selfloop transitions, 21 changer transitions 0/417 dead transitions. [2024-06-21 21:27:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 417 transitions, 6002 flow [2024-06-21 21:27:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-21 21:27:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:27:19,229 INFO L175 Difference]: Start difference. First operand has 292 places, 398 transitions, 5040 flow. Second operand 8 states and 131 transitions. [2024-06-21 21:27:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 417 transitions, 6002 flow [2024-06-21 21:27:20,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 417 transitions, 5901 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:20,245 INFO L231 Difference]: Finished difference. Result has 294 places, 400 transitions, 5058 flow [2024-06-21 21:27:20,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5058, PETRI_PLACES=294, PETRI_TRANSITIONS=400} [2024-06-21 21:27:20,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-21 21:27:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 400 transitions, 5058 flow [2024-06-21 21:27:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:20,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:20,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 21:27:20,246 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1354956043, now seen corresponding path program 4 times [2024-06-21 21:27:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849818169] [2024-06-21 21:27:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849818169] [2024-06-21 21:27:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849818169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:21,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:21,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626379775] [2024-06-21 21:27:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:21,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:21,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 400 transitions, 5058 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:21,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:21,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:21,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:22,323 INFO L124 PetriNetUnfolderBase]: 3028/4732 cut-off events. [2024-06-21 21:27:22,323 INFO L125 PetriNetUnfolderBase]: For 283208/283208 co-relation queries the response was YES. [2024-06-21 21:27:22,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39217 conditions, 4732 events. 3028/4732 cut-off events. For 283208/283208 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 26561 event pairs, 581 based on Foata normal form. 2/4731 useless extension candidates. Maximal degree in co-relation 39081. Up to 4579 conditions per place. [2024-06-21 21:27:22,384 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 390 selfloop transitions, 21 changer transitions 0/415 dead transitions. [2024-06-21 21:27:22,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 415 transitions, 5996 flow [2024-06-21 21:27:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-21 21:27:22,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 21:27:22,385 INFO L175 Difference]: Start difference. First operand has 294 places, 400 transitions, 5058 flow. Second operand 8 states and 126 transitions. [2024-06-21 21:27:22,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 415 transitions, 5996 flow [2024-06-21 21:27:23,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 415 transitions, 5893 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:23,276 INFO L231 Difference]: Finished difference. Result has 296 places, 402 transitions, 5078 flow [2024-06-21 21:27:23,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5078, PETRI_PLACES=296, PETRI_TRANSITIONS=402} [2024-06-21 21:27:23,277 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-21 21:27:23,277 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 402 transitions, 5078 flow [2024-06-21 21:27:23,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:23,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:23,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 21:27:23,277 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:23,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash 697289895, now seen corresponding path program 5 times [2024-06-21 21:27:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394791082] [2024-06-21 21:27:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:24,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:24,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394791082] [2024-06-21 21:27:24,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394791082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:24,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055506375] [2024-06-21 21:27:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:24,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:24,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 402 transitions, 5078 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:24,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:24,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:24,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:25,397 INFO L124 PetriNetUnfolderBase]: 3036/4744 cut-off events. [2024-06-21 21:27:25,397 INFO L125 PetriNetUnfolderBase]: For 291169/291169 co-relation queries the response was YES. [2024-06-21 21:27:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39486 conditions, 4744 events. 3036/4744 cut-off events. For 291169/291169 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26662 event pairs, 581 based on Foata normal form. 2/4743 useless extension candidates. Maximal degree in co-relation 39349. Up to 4588 conditions per place. [2024-06-21 21:27:25,460 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 388 selfloop transitions, 25 changer transitions 0/417 dead transitions. [2024-06-21 21:27:25,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 417 transitions, 6034 flow [2024-06-21 21:27:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-21 21:27:25,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 21:27:25,461 INFO L175 Difference]: Start difference. First operand has 296 places, 402 transitions, 5078 flow. Second operand 8 states and 127 transitions. [2024-06-21 21:27:25,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 417 transitions, 6034 flow [2024-06-21 21:27:26,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 417 transitions, 5927 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:26,377 INFO L231 Difference]: Finished difference. Result has 298 places, 404 transitions, 5107 flow [2024-06-21 21:27:26,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5107, PETRI_PLACES=298, PETRI_TRANSITIONS=404} [2024-06-21 21:27:26,378 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-21 21:27:26,378 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 404 transitions, 5107 flow [2024-06-21 21:27:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:26,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 21:27:26,378 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:26,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 697556805, now seen corresponding path program 6 times [2024-06-21 21:27:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591100676] [2024-06-21 21:27:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:27,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591100676] [2024-06-21 21:27:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591100676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:27,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63084270] [2024-06-21 21:27:27,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:27,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:27,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 404 transitions, 5107 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:27,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:27,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:27,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:28,456 INFO L124 PetriNetUnfolderBase]: 3031/4739 cut-off events. [2024-06-21 21:27:28,456 INFO L125 PetriNetUnfolderBase]: For 294034/294034 co-relation queries the response was YES. [2024-06-21 21:27:28,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39379 conditions, 4739 events. 3031/4739 cut-off events. For 294034/294034 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26635 event pairs, 576 based on Foata normal form. 2/4738 useless extension candidates. Maximal degree in co-relation 39241. Up to 4587 conditions per place. [2024-06-21 21:27:28,517 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 398 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2024-06-21 21:27:28,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 419 transitions, 6051 flow [2024-06-21 21:27:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-21 21:27:28,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 21:27:28,518 INFO L175 Difference]: Start difference. First operand has 298 places, 404 transitions, 5107 flow. Second operand 8 states and 125 transitions. [2024-06-21 21:27:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 419 transitions, 6051 flow [2024-06-21 21:27:29,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 419 transitions, 5933 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:29,484 INFO L231 Difference]: Finished difference. Result has 300 places, 406 transitions, 5112 flow [2024-06-21 21:27:29,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5112, PETRI_PLACES=300, PETRI_TRANSITIONS=406} [2024-06-21 21:27:29,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-21 21:27:29,484 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 406 transitions, 5112 flow [2024-06-21 21:27:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:29,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:29,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 21:27:29,485 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:29,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1428845252, now seen corresponding path program 1 times [2024-06-21 21:27:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865735917] [2024-06-21 21:27:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:29,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865735917] [2024-06-21 21:27:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865735917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:30,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:30,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342959460] [2024-06-21 21:27:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:30,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:30,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:30,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:30,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 406 transitions, 5112 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:30,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:30,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:30,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:31,741 INFO L124 PetriNetUnfolderBase]: 3028/4733 cut-off events. [2024-06-21 21:27:31,741 INFO L125 PetriNetUnfolderBase]: For 296553/296553 co-relation queries the response was YES. [2024-06-21 21:27:31,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39319 conditions, 4733 events. 3028/4733 cut-off events. For 296553/296553 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26598 event pairs, 577 based on Foata normal form. 1/4731 useless extension candidates. Maximal degree in co-relation 39180. Up to 4574 conditions per place. [2024-06-21 21:27:31,800 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 390 selfloop transitions, 29 changer transitions 0/423 dead transitions. [2024-06-21 21:27:31,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 423 transitions, 6125 flow [2024-06-21 21:27:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-21 21:27:31,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 21:27:31,801 INFO L175 Difference]: Start difference. First operand has 300 places, 406 transitions, 5112 flow. Second operand 8 states and 128 transitions. [2024-06-21 21:27:31,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 423 transitions, 6125 flow [2024-06-21 21:27:32,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 423 transitions, 6018 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:32,693 INFO L231 Difference]: Finished difference. Result has 302 places, 410 transitions, 5192 flow [2024-06-21 21:27:32,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5192, PETRI_PLACES=302, PETRI_TRANSITIONS=410} [2024-06-21 21:27:32,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-21 21:27:32,694 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 410 transitions, 5192 flow [2024-06-21 21:27:32,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:32,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:32,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:32,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 21:27:32,694 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:32,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -65374053, now seen corresponding path program 1 times [2024-06-21 21:27:32,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:32,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633951943] [2024-06-21 21:27:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:32,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:33,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633951943] [2024-06-21 21:27:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633951943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:33,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:33,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165855657] [2024-06-21 21:27:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:33,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:33,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:33,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 410 transitions, 5192 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:33,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:33,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:33,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:35,083 INFO L124 PetriNetUnfolderBase]: 3062/4786 cut-off events. [2024-06-21 21:27:35,083 INFO L125 PetriNetUnfolderBase]: For 315787/315787 co-relation queries the response was YES. [2024-06-21 21:27:35,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40504 conditions, 4786 events. 3062/4786 cut-off events. For 315787/315787 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 26924 event pairs, 491 based on Foata normal form. 2/4778 useless extension candidates. Maximal degree in co-relation 40364. Up to 4243 conditions per place. [2024-06-21 21:27:35,139 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 320 selfloop transitions, 115 changer transitions 0/439 dead transitions. [2024-06-21 21:27:35,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 439 transitions, 6616 flow [2024-06-21 21:27:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 21:27:35,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-21 21:27:35,140 INFO L175 Difference]: Start difference. First operand has 302 places, 410 transitions, 5192 flow. Second operand 8 states and 147 transitions. [2024-06-21 21:27:35,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 439 transitions, 6616 flow [2024-06-21 21:27:36,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 439 transitions, 6476 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:36,198 INFO L231 Difference]: Finished difference. Result has 305 places, 417 transitions, 5636 flow [2024-06-21 21:27:36,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5636, PETRI_PLACES=305, PETRI_TRANSITIONS=417} [2024-06-21 21:27:36,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-21 21:27:36,198 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 417 transitions, 5636 flow [2024-06-21 21:27:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:36,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:36,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 21:27:36,199 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:36,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 521538375, now seen corresponding path program 2 times [2024-06-21 21:27:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341705546] [2024-06-21 21:27:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:37,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341705546] [2024-06-21 21:27:37,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341705546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:37,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:37,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:37,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962472452] [2024-06-21 21:27:37,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:37,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:37,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:37,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 417 transitions, 5636 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:37,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:37,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:37,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:38,349 INFO L124 PetriNetUnfolderBase]: 3064/4789 cut-off events. [2024-06-21 21:27:38,349 INFO L125 PetriNetUnfolderBase]: For 328273/328273 co-relation queries the response was YES. [2024-06-21 21:27:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41561 conditions, 4789 events. 3064/4789 cut-off events. For 328273/328273 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 26945 event pairs, 499 based on Foata normal form. 2/4781 useless extension candidates. Maximal degree in co-relation 41419. Up to 4408 conditions per place. [2024-06-21 21:27:38,412 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 358 selfloop transitions, 76 changer transitions 0/438 dead transitions. [2024-06-21 21:27:38,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 438 transitions, 6771 flow [2024-06-21 21:27:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:27:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:27:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 21:27:38,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-21 21:27:38,413 INFO L175 Difference]: Start difference. First operand has 305 places, 417 transitions, 5636 flow. Second operand 8 states and 141 transitions. [2024-06-21 21:27:38,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 438 transitions, 6771 flow [2024-06-21 21:27:39,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 438 transitions, 6525 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-21 21:27:39,688 INFO L231 Difference]: Finished difference. Result has 309 places, 420 transitions, 5698 flow [2024-06-21 21:27:39,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5698, PETRI_PLACES=309, PETRI_TRANSITIONS=420} [2024-06-21 21:27:39,689 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-21 21:27:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 420 transitions, 5698 flow [2024-06-21 21:27:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:39,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:39,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 21:27:39,690 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash -786584603, now seen corresponding path program 3 times [2024-06-21 21:27:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:39,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769999178] [2024-06-21 21:27:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:39,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:40,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:40,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769999178] [2024-06-21 21:27:40,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769999178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:40,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:40,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620393499] [2024-06-21 21:27:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:40,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:40,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 420 transitions, 5698 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:40,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:40,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:42,058 INFO L124 PetriNetUnfolderBase]: 3090/4832 cut-off events. [2024-06-21 21:27:42,058 INFO L125 PetriNetUnfolderBase]: For 337259/337262 co-relation queries the response was YES. [2024-06-21 21:27:42,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42136 conditions, 4832 events. 3090/4832 cut-off events. For 337259/337262 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 27278 event pairs, 488 based on Foata normal form. 4/4829 useless extension candidates. Maximal degree in co-relation 41992. Up to 4387 conditions per place. [2024-06-21 21:27:42,125 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 367 selfloop transitions, 82 changer transitions 0/453 dead transitions. [2024-06-21 21:27:42,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 453 transitions, 7136 flow [2024-06-21 21:27:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:27:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:27:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 21:27:42,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:27:42,127 INFO L175 Difference]: Start difference. First operand has 309 places, 420 transitions, 5698 flow. Second operand 9 states and 160 transitions. [2024-06-21 21:27:42,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 453 transitions, 7136 flow [2024-06-21 21:27:43,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 453 transitions, 6896 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-21 21:27:43,147 INFO L231 Difference]: Finished difference. Result has 311 places, 426 transitions, 5889 flow [2024-06-21 21:27:43,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5460, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5889, PETRI_PLACES=311, PETRI_TRANSITIONS=426} [2024-06-21 21:27:43,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-21 21:27:43,147 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 426 transitions, 5889 flow [2024-06-21 21:27:43,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:43,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:43,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:43,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 21:27:43,148 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:43,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash -786256096, now seen corresponding path program 1 times [2024-06-21 21:27:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651939632] [2024-06-21 21:27:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651939632] [2024-06-21 21:27:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651939632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:44,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:44,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625426115] [2024-06-21 21:27:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:44,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:44,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 426 transitions, 5889 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:44,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:44,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:44,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:45,485 INFO L124 PetriNetUnfolderBase]: 3256/5064 cut-off events. [2024-06-21 21:27:45,485 INFO L125 PetriNetUnfolderBase]: For 379904/379907 co-relation queries the response was YES. [2024-06-21 21:27:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45260 conditions, 5064 events. 3256/5064 cut-off events. For 379904/379907 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 28608 event pairs, 493 based on Foata normal form. 10/5067 useless extension candidates. Maximal degree in co-relation 45116. Up to 4394 conditions per place. [2024-06-21 21:27:45,555 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 355 selfloop transitions, 110 changer transitions 0/469 dead transitions. [2024-06-21 21:27:45,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 469 transitions, 7509 flow [2024-06-21 21:27:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:27:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:27:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-21 21:27:45,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 21:27:45,556 INFO L175 Difference]: Start difference. First operand has 311 places, 426 transitions, 5889 flow. Second operand 9 states and 165 transitions. [2024-06-21 21:27:45,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 469 transitions, 7509 flow [2024-06-21 21:27:46,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 469 transitions, 7239 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:46,720 INFO L231 Difference]: Finished difference. Result has 316 places, 442 transitions, 6319 flow [2024-06-21 21:27:46,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6319, PETRI_PLACES=316, PETRI_TRANSITIONS=442} [2024-06-21 21:27:46,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-21 21:27:46,721 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 442 transitions, 6319 flow [2024-06-21 21:27:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 21:27:46,721 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:46,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash -956645619, now seen corresponding path program 4 times [2024-06-21 21:27:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741831970] [2024-06-21 21:27:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:47,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:47,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741831970] [2024-06-21 21:27:47,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741831970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:47,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:47,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:47,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302610899] [2024-06-21 21:27:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:47,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:47,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:47,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 442 transitions, 6319 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:47,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:47,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:47,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:49,134 INFO L124 PetriNetUnfolderBase]: 3266/5082 cut-off events. [2024-06-21 21:27:49,134 INFO L125 PetriNetUnfolderBase]: For 383290/383293 co-relation queries the response was YES. [2024-06-21 21:27:49,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46676 conditions, 5082 events. 3266/5082 cut-off events. For 383290/383293 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 28773 event pairs, 493 based on Foata normal form. 4/5079 useless extension candidates. Maximal degree in co-relation 46529. Up to 4629 conditions per place. [2024-06-21 21:27:49,207 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 381 selfloop transitions, 84 changer transitions 0/469 dead transitions. [2024-06-21 21:27:49,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 469 transitions, 7619 flow [2024-06-21 21:27:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:27:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:27:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-21 21:27:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-21 21:27:49,208 INFO L175 Difference]: Start difference. First operand has 316 places, 442 transitions, 6319 flow. Second operand 9 states and 158 transitions. [2024-06-21 21:27:49,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 469 transitions, 7619 flow [2024-06-21 21:27:50,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 469 transitions, 7418 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-21 21:27:50,497 INFO L231 Difference]: Finished difference. Result has 320 places, 445 transitions, 6382 flow [2024-06-21 21:27:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6120, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6382, PETRI_PLACES=320, PETRI_TRANSITIONS=445} [2024-06-21 21:27:50,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-21 21:27:50,497 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 445 transitions, 6382 flow [2024-06-21 21:27:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:50,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:50,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:50,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 21:27:50,498 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:50,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -895962788, now seen corresponding path program 1 times [2024-06-21 21:27:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117986152] [2024-06-21 21:27:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:51,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:51,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117986152] [2024-06-21 21:27:51,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117986152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:51,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:51,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645334555] [2024-06-21 21:27:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:51,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:51,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:51,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 445 transitions, 6382 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:51,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:51,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:51,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:52,990 INFO L124 PetriNetUnfolderBase]: 3355/5213 cut-off events. [2024-06-21 21:27:52,990 INFO L125 PetriNetUnfolderBase]: For 407047/407047 co-relation queries the response was YES. [2024-06-21 21:27:53,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47808 conditions, 5213 events. 3355/5213 cut-off events. For 407047/407047 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 29593 event pairs, 559 based on Foata normal form. 12/5220 useless extension candidates. Maximal degree in co-relation 47660. Up to 4929 conditions per place. [2024-06-21 21:27:53,054 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 442 selfloop transitions, 36 changer transitions 0/482 dead transitions. [2024-06-21 21:27:53,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 482 transitions, 7820 flow [2024-06-21 21:27:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:27:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:27:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-21 21:27:53,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:27:53,055 INFO L175 Difference]: Start difference. First operand has 320 places, 445 transitions, 6382 flow. Second operand 10 states and 165 transitions. [2024-06-21 21:27:53,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 482 transitions, 7820 flow [2024-06-21 21:27:54,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 482 transitions, 7602 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 21:27:54,168 INFO L231 Difference]: Finished difference. Result has 327 places, 455 transitions, 6485 flow [2024-06-21 21:27:54,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6485, PETRI_PLACES=327, PETRI_TRANSITIONS=455} [2024-06-21 21:27:54,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-21 21:27:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 455 transitions, 6485 flow [2024-06-21 21:27:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 21:27:54,169 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:54,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2116403881, now seen corresponding path program 5 times [2024-06-21 21:27:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461365983] [2024-06-21 21:27:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461365983] [2024-06-21 21:27:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461365983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452809473] [2024-06-21 21:27:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:55,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:55,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 455 transitions, 6485 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:55,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:55,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:27:56,810 INFO L124 PetriNetUnfolderBase]: 3365/5234 cut-off events. [2024-06-21 21:27:56,810 INFO L125 PetriNetUnfolderBase]: For 392403/392406 co-relation queries the response was YES. [2024-06-21 21:27:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47999 conditions, 5234 events. 3365/5234 cut-off events. For 392403/392406 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 29785 event pairs, 511 based on Foata normal form. 4/5230 useless extension candidates. Maximal degree in co-relation 47847. Up to 4880 conditions per place. [2024-06-21 21:27:56,887 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 409 selfloop transitions, 66 changer transitions 0/479 dead transitions. [2024-06-21 21:27:56,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 479 transitions, 7686 flow [2024-06-21 21:27:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:27:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:27:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-21 21:27:56,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:27:56,889 INFO L175 Difference]: Start difference. First operand has 327 places, 455 transitions, 6485 flow. Second operand 9 states and 153 transitions. [2024-06-21 21:27:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 479 transitions, 7686 flow [2024-06-21 21:27:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 479 transitions, 7613 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-21 21:27:58,489 INFO L231 Difference]: Finished difference. Result has 331 places, 458 transitions, 6647 flow [2024-06-21 21:27:58,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6647, PETRI_PLACES=331, PETRI_TRANSITIONS=458} [2024-06-21 21:27:58,490 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-21 21:27:58,490 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 458 transitions, 6647 flow [2024-06-21 21:27:58,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:58,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:27:58,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:27:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 21:27:58,490 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:27:58,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:27:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash 481563296, now seen corresponding path program 2 times [2024-06-21 21:27:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:27:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210810886] [2024-06-21 21:27:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:27:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:27:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:27:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:27:59,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:27:59,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210810886] [2024-06-21 21:27:59,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210810886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:27:59,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:27:59,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:27:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874329861] [2024-06-21 21:27:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:27:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:27:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:27:59,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:27:59,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:27:59,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:27:59,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 458 transitions, 6647 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:27:59,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:27:59,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:27:59,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:00,766 INFO L124 PetriNetUnfolderBase]: 3405/5290 cut-off events. [2024-06-21 21:28:00,766 INFO L125 PetriNetUnfolderBase]: For 416635/416638 co-relation queries the response was YES. [2024-06-21 21:28:00,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48828 conditions, 5290 events. 3405/5290 cut-off events. For 416635/416638 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 30082 event pairs, 513 based on Foata normal form. 10/5292 useless extension candidates. Maximal degree in co-relation 48675. Up to 4896 conditions per place. [2024-06-21 21:28:00,843 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 408 selfloop transitions, 72 changer transitions 0/484 dead transitions. [2024-06-21 21:28:00,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 484 transitions, 7915 flow [2024-06-21 21:28:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:28:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:28:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-21 21:28:00,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 21:28:00,844 INFO L175 Difference]: Start difference. First operand has 331 places, 458 transitions, 6647 flow. Second operand 9 states and 156 transitions. [2024-06-21 21:28:00,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 484 transitions, 7915 flow [2024-06-21 21:28:02,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 484 transitions, 7711 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 21:28:02,092 INFO L231 Difference]: Finished difference. Result has 333 places, 462 transitions, 6740 flow [2024-06-21 21:28:02,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6443, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6740, PETRI_PLACES=333, PETRI_TRANSITIONS=462} [2024-06-21 21:28:02,093 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-21 21:28:02,093 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 462 transitions, 6740 flow [2024-06-21 21:28:02,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:02,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:02,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 21:28:02,093 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:02,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1693536832, now seen corresponding path program 2 times [2024-06-21 21:28:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480007386] [2024-06-21 21:28:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480007386] [2024-06-21 21:28:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480007386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:02,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034006602] [2024-06-21 21:28:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:03,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 462 transitions, 6740 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:03,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:03,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:04,358 INFO L124 PetriNetUnfolderBase]: 3433/5338 cut-off events. [2024-06-21 21:28:04,359 INFO L125 PetriNetUnfolderBase]: For 427120/427123 co-relation queries the response was YES. [2024-06-21 21:28:04,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49423 conditions, 5338 events. 3433/5338 cut-off events. For 427120/427123 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 30424 event pairs, 579 based on Foata normal form. 10/5340 useless extension candidates. Maximal degree in co-relation 49269. Up to 5095 conditions per place. [2024-06-21 21:28:04,443 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 446 selfloop transitions, 33 changer transitions 0/483 dead transitions. [2024-06-21 21:28:04,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 483 transitions, 7942 flow [2024-06-21 21:28:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:28:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:28:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-21 21:28:04,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-21 21:28:04,444 INFO L175 Difference]: Start difference. First operand has 333 places, 462 transitions, 6740 flow. Second operand 7 states and 118 transitions. [2024-06-21 21:28:04,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 483 transitions, 7942 flow [2024-06-21 21:28:05,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 483 transitions, 7713 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-21 21:28:05,963 INFO L231 Difference]: Finished difference. Result has 335 places, 468 transitions, 6746 flow [2024-06-21 21:28:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6511, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6746, PETRI_PLACES=335, PETRI_TRANSITIONS=468} [2024-06-21 21:28:05,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-21 21:28:05,963 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 468 transitions, 6746 flow [2024-06-21 21:28:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:05,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:05,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 21:28:05,964 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:05,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1693833502, now seen corresponding path program 3 times [2024-06-21 21:28:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487449965] [2024-06-21 21:28:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:05,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487449965] [2024-06-21 21:28:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487449965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:06,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:06,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169120841] [2024-06-21 21:28:06,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:06,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:06,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:06,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 468 transitions, 6746 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:06,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:06,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:06,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:08,336 INFO L124 PetriNetUnfolderBase]: 3482/5417 cut-off events. [2024-06-21 21:28:08,336 INFO L125 PetriNetUnfolderBase]: For 453420/453423 co-relation queries the response was YES. [2024-06-21 21:28:08,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50209 conditions, 5417 events. 3482/5417 cut-off events. For 453420/453423 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31078 event pairs, 594 based on Foata normal form. 14/5423 useless extension candidates. Maximal degree in co-relation 50052. Up to 5105 conditions per place. [2024-06-21 21:28:08,405 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 442 selfloop transitions, 44 changer transitions 0/490 dead transitions. [2024-06-21 21:28:08,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 490 transitions, 8027 flow [2024-06-21 21:28:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:28:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:28:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-21 21:28:08,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-21 21:28:08,406 INFO L175 Difference]: Start difference. First operand has 335 places, 468 transitions, 6746 flow. Second operand 7 states and 122 transitions. [2024-06-21 21:28:08,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 490 transitions, 8027 flow [2024-06-21 21:28:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 490 transitions, 7912 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-21 21:28:09,660 INFO L231 Difference]: Finished difference. Result has 340 places, 472 transitions, 6841 flow [2024-06-21 21:28:09,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6841, PETRI_PLACES=340, PETRI_TRANSITIONS=472} [2024-06-21 21:28:09,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-21 21:28:09,661 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 472 transitions, 6841 flow [2024-06-21 21:28:09,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:09,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:09,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 21:28:09,662 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:09,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1702114873, now seen corresponding path program 6 times [2024-06-21 21:28:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289261635] [2024-06-21 21:28:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289261635] [2024-06-21 21:28:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289261635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:10,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426075299] [2024-06-21 21:28:10,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:11,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:11,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 472 transitions, 6841 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:11,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:11,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:11,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:12,481 INFO L124 PetriNetUnfolderBase]: 3476/5408 cut-off events. [2024-06-21 21:28:12,481 INFO L125 PetriNetUnfolderBase]: For 430034/430034 co-relation queries the response was YES. [2024-06-21 21:28:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50075 conditions, 5408 events. 3476/5408 cut-off events. For 430034/430034 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31032 event pairs, 596 based on Foata normal form. 2/5399 useless extension candidates. Maximal degree in co-relation 49916. Up to 5089 conditions per place. [2024-06-21 21:28:12,560 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 428 selfloop transitions, 54 changer transitions 0/486 dead transitions. [2024-06-21 21:28:12,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 486 transitions, 7905 flow [2024-06-21 21:28:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:28:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:28:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-21 21:28:12,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:28:12,562 INFO L175 Difference]: Start difference. First operand has 340 places, 472 transitions, 6841 flow. Second operand 8 states and 135 transitions. [2024-06-21 21:28:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 486 transitions, 7905 flow [2024-06-21 21:28:14,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 486 transitions, 7764 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-21 21:28:14,256 INFO L231 Difference]: Finished difference. Result has 344 places, 472 transitions, 6814 flow [2024-06-21 21:28:14,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6814, PETRI_PLACES=344, PETRI_TRANSITIONS=472} [2024-06-21 21:28:14,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-21 21:28:14,256 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 472 transitions, 6814 flow [2024-06-21 21:28:14,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:14,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 21:28:14,257 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:14,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1223600518, now seen corresponding path program 1 times [2024-06-21 21:28:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:14,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264042681] [2024-06-21 21:28:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264042681] [2024-06-21 21:28:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264042681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:15,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:15,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182382120] [2024-06-21 21:28:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:15,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:15,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:15,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:15,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 472 transitions, 6814 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:15,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:15,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:15,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:16,605 INFO L124 PetriNetUnfolderBase]: 3478/5412 cut-off events. [2024-06-21 21:28:16,605 INFO L125 PetriNetUnfolderBase]: For 434970/434973 co-relation queries the response was YES. [2024-06-21 21:28:16,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50007 conditions, 5412 events. 3478/5412 cut-off events. For 434970/434973 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31087 event pairs, 587 based on Foata normal form. 4/5408 useless extension candidates. Maximal degree in co-relation 49847. Up to 5133 conditions per place. [2024-06-21 21:28:16,686 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 429 selfloop transitions, 55 changer transitions 0/488 dead transitions. [2024-06-21 21:28:16,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 488 transitions, 7993 flow [2024-06-21 21:28:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:28:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:28:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-21 21:28:16,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 21:28:16,687 INFO L175 Difference]: Start difference. First operand has 344 places, 472 transitions, 6814 flow. Second operand 7 states and 120 transitions. [2024-06-21 21:28:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 488 transitions, 7993 flow [2024-06-21 21:28:18,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 488 transitions, 7877 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 21:28:18,124 INFO L231 Difference]: Finished difference. Result has 345 places, 475 transitions, 6954 flow [2024-06-21 21:28:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6954, PETRI_PLACES=345, PETRI_TRANSITIONS=475} [2024-06-21 21:28:18,124 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-21 21:28:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 475 transitions, 6954 flow [2024-06-21 21:28:18,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:18,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:18,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 21:28:18,125 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1215319612, now seen corresponding path program 3 times [2024-06-21 21:28:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115087685] [2024-06-21 21:28:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:19,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:19,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115087685] [2024-06-21 21:28:19,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115087685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:19,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:19,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896488193] [2024-06-21 21:28:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:19,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:19,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 475 transitions, 6954 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:19,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:19,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:19,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:20,606 INFO L124 PetriNetUnfolderBase]: 3476/5407 cut-off events. [2024-06-21 21:28:20,606 INFO L125 PetriNetUnfolderBase]: For 444073/444073 co-relation queries the response was YES. [2024-06-21 21:28:20,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49851 conditions, 5407 events. 3476/5407 cut-off events. For 444073/444073 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 31080 event pairs, 582 based on Foata normal form. 6/5402 useless extension candidates. Maximal degree in co-relation 49690. Up to 5066 conditions per place. [2024-06-21 21:28:20,686 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 431 selfloop transitions, 60 changer transitions 0/495 dead transitions. [2024-06-21 21:28:20,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 495 transitions, 8265 flow [2024-06-21 21:28:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:28:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:28:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 21:28:20,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 21:28:20,688 INFO L175 Difference]: Start difference. First operand has 345 places, 475 transitions, 6954 flow. Second operand 8 states and 137 transitions. [2024-06-21 21:28:20,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 495 transitions, 8265 flow [2024-06-21 21:28:22,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 495 transitions, 8084 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-21 21:28:22,390 INFO L231 Difference]: Finished difference. Result has 348 places, 481 transitions, 7148 flow [2024-06-21 21:28:22,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7148, PETRI_PLACES=348, PETRI_TRANSITIONS=481} [2024-06-21 21:28:22,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-21 21:28:22,390 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 481 transitions, 7148 flow [2024-06-21 21:28:22,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:22,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:22,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:22,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 21:28:22,391 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:22,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash 366925831, now seen corresponding path program 7 times [2024-06-21 21:28:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441049636] [2024-06-21 21:28:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441049636] [2024-06-21 21:28:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441049636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:23,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:23,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607022991] [2024-06-21 21:28:23,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:23,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:23,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:23,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 481 transitions, 7148 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:23,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:23,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:23,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:25,185 INFO L124 PetriNetUnfolderBase]: 3502/5460 cut-off events. [2024-06-21 21:28:25,185 INFO L125 PetriNetUnfolderBase]: For 453967/453970 co-relation queries the response was YES. [2024-06-21 21:28:25,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51115 conditions, 5460 events. 3502/5460 cut-off events. For 453967/453970 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 31538 event pairs, 581 based on Foata normal form. 4/5456 useless extension candidates. Maximal degree in co-relation 50953. Up to 5103 conditions per place. [2024-06-21 21:28:25,263 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 461 selfloop transitions, 55 changer transitions 0/520 dead transitions. [2024-06-21 21:28:25,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 520 transitions, 8860 flow [2024-06-21 21:28:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:28:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:28:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-21 21:28:25,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:28:25,265 INFO L175 Difference]: Start difference. First operand has 348 places, 481 transitions, 7148 flow. Second operand 10 states and 175 transitions. [2024-06-21 21:28:25,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 520 transitions, 8860 flow [2024-06-21 21:28:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 520 transitions, 8568 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-21 21:28:26,927 INFO L231 Difference]: Finished difference. Result has 352 places, 487 transitions, 7258 flow [2024-06-21 21:28:26,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6856, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7258, PETRI_PLACES=352, PETRI_TRANSITIONS=487} [2024-06-21 21:28:26,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-21 21:28:26,928 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 487 transitions, 7258 flow [2024-06-21 21:28:26,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:26,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:26,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:26,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 21:28:26,929 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:26,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 367254338, now seen corresponding path program 4 times [2024-06-21 21:28:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556061779] [2024-06-21 21:28:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556061779] [2024-06-21 21:28:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556061779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463915784] [2024-06-21 21:28:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:27,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:27,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 487 transitions, 7258 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:27,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:27,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:27,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:29,410 INFO L124 PetriNetUnfolderBase]: 3554/5530 cut-off events. [2024-06-21 21:28:29,410 INFO L125 PetriNetUnfolderBase]: For 492979/492982 co-relation queries the response was YES. [2024-06-21 21:28:29,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52550 conditions, 5530 events. 3554/5530 cut-off events. For 492979/492982 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 31870 event pairs, 581 based on Foata normal form. 6/5528 useless extension candidates. Maximal degree in co-relation 52387. Up to 5137 conditions per place. [2024-06-21 21:28:29,493 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 464 selfloop transitions, 61 changer transitions 0/529 dead transitions. [2024-06-21 21:28:29,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 529 transitions, 9062 flow [2024-06-21 21:28:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:28:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:28:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-21 21:28:29,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:28:29,494 INFO L175 Difference]: Start difference. First operand has 352 places, 487 transitions, 7258 flow. Second operand 10 states and 175 transitions. [2024-06-21 21:28:29,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 529 transitions, 9062 flow [2024-06-21 21:28:31,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 529 transitions, 8768 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-21 21:28:31,259 INFO L231 Difference]: Finished difference. Result has 357 places, 499 transitions, 7499 flow [2024-06-21 21:28:31,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7499, PETRI_PLACES=357, PETRI_TRANSITIONS=499} [2024-06-21 21:28:31,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-21 21:28:31,259 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 499 transitions, 7499 flow [2024-06-21 21:28:31,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:31,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:31,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 21:28:31,260 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:31,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash -778161384, now seen corresponding path program 5 times [2024-06-21 21:28:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:31,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690790597] [2024-06-21 21:28:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:31,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:32,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690790597] [2024-06-21 21:28:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690790597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457487428] [2024-06-21 21:28:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:32,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:32,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 499 transitions, 7499 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:32,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:32,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:32,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:33,803 INFO L124 PetriNetUnfolderBase]: 3564/5540 cut-off events. [2024-06-21 21:28:33,803 INFO L125 PetriNetUnfolderBase]: For 496859/496862 co-relation queries the response was YES. [2024-06-21 21:28:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53041 conditions, 5540 events. 3564/5540 cut-off events. For 496859/496862 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31899 event pairs, 597 based on Foata normal form. 4/5536 useless extension candidates. Maximal degree in co-relation 52875. Up to 5075 conditions per place. [2024-06-21 21:28:33,885 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 448 selfloop transitions, 80 changer transitions 0/532 dead transitions. [2024-06-21 21:28:33,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 532 transitions, 8872 flow [2024-06-21 21:28:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:28:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:28:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 21:28:33,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-21 21:28:33,887 INFO L175 Difference]: Start difference. First operand has 357 places, 499 transitions, 7499 flow. Second operand 9 states and 157 transitions. [2024-06-21 21:28:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 532 transitions, 8872 flow [2024-06-21 21:28:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 532 transitions, 8618 flow, removed 106 selfloop flow, removed 5 redundant places. [2024-06-21 21:28:35,669 INFO L231 Difference]: Finished difference. Result has 362 places, 508 transitions, 7626 flow [2024-06-21 21:28:35,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7626, PETRI_PLACES=362, PETRI_TRANSITIONS=508} [2024-06-21 21:28:35,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-21 21:28:35,669 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 508 transitions, 7626 flow [2024-06-21 21:28:35,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:35,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:35,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 21:28:35,670 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1080991913, now seen corresponding path program 8 times [2024-06-21 21:28:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029348163] [2024-06-21 21:28:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029348163] [2024-06-21 21:28:36,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029348163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:36,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045126279] [2024-06-21 21:28:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:36,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:36,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:36,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:36,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 508 transitions, 7626 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:36,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:36,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:36,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:38,253 INFO L124 PetriNetUnfolderBase]: 3574/5558 cut-off events. [2024-06-21 21:28:38,253 INFO L125 PetriNetUnfolderBase]: For 505890/505893 co-relation queries the response was YES. [2024-06-21 21:28:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53563 conditions, 5558 events. 3574/5558 cut-off events. For 505890/505893 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32094 event pairs, 585 based on Foata normal form. 4/5554 useless extension candidates. Maximal degree in co-relation 53394. Up to 5199 conditions per place. [2024-06-21 21:28:38,339 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 480 selfloop transitions, 57 changer transitions 0/541 dead transitions. [2024-06-21 21:28:38,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 541 transitions, 9204 flow [2024-06-21 21:28:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:28:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:28:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-21 21:28:38,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-21 21:28:38,340 INFO L175 Difference]: Start difference. First operand has 362 places, 508 transitions, 7626 flow. Second operand 10 states and 172 transitions. [2024-06-21 21:28:38,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 541 transitions, 9204 flow [2024-06-21 21:28:39,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 541 transitions, 9003 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-21 21:28:39,895 INFO L231 Difference]: Finished difference. Result has 367 places, 511 transitions, 7637 flow [2024-06-21 21:28:39,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7425, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7637, PETRI_PLACES=367, PETRI_TRANSITIONS=511} [2024-06-21 21:28:39,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-21 21:28:39,896 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 511 transitions, 7637 flow [2024-06-21 21:28:39,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:39,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:39,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:39,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 21:28:39,897 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:39,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:39,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1158073111, now seen corresponding path program 9 times [2024-06-21 21:28:39,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:39,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949816485] [2024-06-21 21:28:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949816485] [2024-06-21 21:28:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949816485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090604662] [2024-06-21 21:28:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:41,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:41,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:41,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 511 transitions, 7637 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:41,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:43,214 INFO L124 PetriNetUnfolderBase]: 3690/5739 cut-off events. [2024-06-21 21:28:43,214 INFO L125 PetriNetUnfolderBase]: For 569509/569512 co-relation queries the response was YES. [2024-06-21 21:28:43,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56569 conditions, 5739 events. 3690/5739 cut-off events. For 569509/569512 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33331 event pairs, 602 based on Foata normal form. 8/5739 useless extension candidates. Maximal degree in co-relation 56398. Up to 4939 conditions per place. [2024-06-21 21:28:43,299 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 427 selfloop transitions, 132 changer transitions 0/563 dead transitions. [2024-06-21 21:28:43,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 563 transitions, 9821 flow [2024-06-21 21:28:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:28:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:28:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-21 21:28:43,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-21 21:28:43,300 INFO L175 Difference]: Start difference. First operand has 367 places, 511 transitions, 7637 flow. Second operand 11 states and 199 transitions. [2024-06-21 21:28:43,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 563 transitions, 9821 flow [2024-06-21 21:28:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 563 transitions, 9637 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-21 21:28:45,334 INFO L231 Difference]: Finished difference. Result has 371 places, 530 transitions, 8297 flow [2024-06-21 21:28:45,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8297, PETRI_PLACES=371, PETRI_TRANSITIONS=530} [2024-06-21 21:28:45,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-21 21:28:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 530 transitions, 8297 flow [2024-06-21 21:28:45,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:45,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:45,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:45,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 21:28:45,335 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:45,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1157744821, now seen corresponding path program 10 times [2024-06-21 21:28:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:45,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926368172] [2024-06-21 21:28:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:46,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:46,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926368172] [2024-06-21 21:28:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926368172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:46,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:46,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865963148] [2024-06-21 21:28:46,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:46,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:46,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:46,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 530 transitions, 8297 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:46,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:46,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:46,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:48,356 INFO L124 PetriNetUnfolderBase]: 3672/5715 cut-off events. [2024-06-21 21:28:48,356 INFO L125 PetriNetUnfolderBase]: For 567162/567165 co-relation queries the response was YES. [2024-06-21 21:28:48,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56596 conditions, 5715 events. 3672/5715 cut-off events. For 567162/567165 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33184 event pairs, 602 based on Foata normal form. 8/5715 useless extension candidates. Maximal degree in co-relation 56424. Up to 4926 conditions per place. [2024-06-21 21:28:48,435 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 426 selfloop transitions, 126 changer transitions 0/556 dead transitions. [2024-06-21 21:28:48,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 556 transitions, 9716 flow [2024-06-21 21:28:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:28:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:28:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-21 21:28:48,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-21 21:28:48,436 INFO L175 Difference]: Start difference. First operand has 371 places, 530 transitions, 8297 flow. Second operand 9 states and 164 transitions. [2024-06-21 21:28:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 556 transitions, 9716 flow [2024-06-21 21:28:50,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 556 transitions, 9278 flow, removed 199 selfloop flow, removed 4 redundant places. [2024-06-21 21:28:50,564 INFO L231 Difference]: Finished difference. Result has 376 places, 530 transitions, 8121 flow [2024-06-21 21:28:50,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8121, PETRI_PLACES=376, PETRI_TRANSITIONS=530} [2024-06-21 21:28:50,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-21 21:28:50,565 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 530 transitions, 8121 flow [2024-06-21 21:28:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:50,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:50,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 21:28:50,566 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:50,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 214933594, now seen corresponding path program 4 times [2024-06-21 21:28:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998947120] [2024-06-21 21:28:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998947120] [2024-06-21 21:28:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998947120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:51,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:28:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239846513] [2024-06-21 21:28:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:28:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:28:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:28:51,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:51,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 530 transitions, 8121 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:51,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:51,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:51,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:53,143 INFO L124 PetriNetUnfolderBase]: 3716/5783 cut-off events. [2024-06-21 21:28:53,143 INFO L125 PetriNetUnfolderBase]: For 589678/589681 co-relation queries the response was YES. [2024-06-21 21:28:53,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56780 conditions, 5783 events. 3716/5783 cut-off events. For 589678/589681 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33741 event pairs, 608 based on Foata normal form. 14/5789 useless extension candidates. Maximal degree in co-relation 56607. Up to 5433 conditions per place. [2024-06-21 21:28:53,233 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 518 selfloop transitions, 36 changer transitions 0/558 dead transitions. [2024-06-21 21:28:53,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 558 transitions, 9627 flow [2024-06-21 21:28:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:28:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:28:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 21:28:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:28:53,234 INFO L175 Difference]: Start difference. First operand has 376 places, 530 transitions, 8121 flow. Second operand 8 states and 140 transitions. [2024-06-21 21:28:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 558 transitions, 9627 flow [2024-06-21 21:28:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 558 transitions, 9375 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 21:28:55,291 INFO L231 Difference]: Finished difference. Result has 376 places, 531 transitions, 7982 flow [2024-06-21 21:28:55,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7982, PETRI_PLACES=376, PETRI_TRANSITIONS=531} [2024-06-21 21:28:55,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-21 21:28:55,292 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 531 transitions, 7982 flow [2024-06-21 21:28:55,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:55,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:55,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:55,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 21:28:55,292 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:55,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1661021516, now seen corresponding path program 6 times [2024-06-21 21:28:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:55,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978087975] [2024-06-21 21:28:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:28:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:28:56,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:28:56,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978087975] [2024-06-21 21:28:56,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978087975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:28:56,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:28:56,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:28:56,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109418075] [2024-06-21 21:28:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:28:56,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:28:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:28:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:28:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:28:56,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:28:56,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 531 transitions, 7982 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:56,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:28:56,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:28:56,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:28:57,815 INFO L124 PetriNetUnfolderBase]: 3704/5764 cut-off events. [2024-06-21 21:28:57,815 INFO L125 PetriNetUnfolderBase]: For 557918/557918 co-relation queries the response was YES. [2024-06-21 21:28:57,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56072 conditions, 5764 events. 3704/5764 cut-off events. For 557918/557918 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33574 event pairs, 611 based on Foata normal form. 4/5757 useless extension candidates. Maximal degree in co-relation 55898. Up to 5380 conditions per place. [2024-06-21 21:28:57,908 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 496 selfloop transitions, 54 changer transitions 0/554 dead transitions. [2024-06-21 21:28:57,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 554 transitions, 9298 flow [2024-06-21 21:28:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:28:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:28:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-21 21:28:57,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-21 21:28:57,909 INFO L175 Difference]: Start difference. First operand has 376 places, 531 transitions, 7982 flow. Second operand 9 states and 154 transitions. [2024-06-21 21:28:57,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 554 transitions, 9298 flow [2024-06-21 21:28:59,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 554 transitions, 9131 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-21 21:28:59,930 INFO L231 Difference]: Finished difference. Result has 379 places, 531 transitions, 7930 flow [2024-06-21 21:28:59,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7815, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7930, PETRI_PLACES=379, PETRI_TRANSITIONS=531} [2024-06-21 21:28:59,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-21 21:28:59,931 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 531 transitions, 7930 flow [2024-06-21 21:28:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:28:59,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:28:59,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:28:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 21:28:59,931 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:28:59,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:28:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1171169293, now seen corresponding path program 11 times [2024-06-21 21:28:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:28:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786983606] [2024-06-21 21:28:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:28:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:28:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:01,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:01,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786983606] [2024-06-21 21:29:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786983606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:01,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857229641] [2024-06-21 21:29:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:01,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:01,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:01,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 531 transitions, 7930 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:01,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:01,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:01,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:02,735 INFO L124 PetriNetUnfolderBase]: 3698/5759 cut-off events. [2024-06-21 21:29:02,735 INFO L125 PetriNetUnfolderBase]: For 549110/549113 co-relation queries the response was YES. [2024-06-21 21:29:02,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55638 conditions, 5759 events. 3698/5759 cut-off events. For 549110/549113 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 33592 event pairs, 601 based on Foata normal form. 4/5755 useless extension candidates. Maximal degree in co-relation 55463. Up to 5437 conditions per place. [2024-06-21 21:29:02,824 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 509 selfloop transitions, 42 changer transitions 0/555 dead transitions. [2024-06-21 21:29:02,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 555 transitions, 9254 flow [2024-06-21 21:29:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-21 21:29:02,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-21 21:29:02,825 INFO L175 Difference]: Start difference. First operand has 379 places, 531 transitions, 7930 flow. Second operand 9 states and 152 transitions. [2024-06-21 21:29:02,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 555 transitions, 9254 flow [2024-06-21 21:29:05,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 555 transitions, 8995 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-21 21:29:05,112 INFO L231 Difference]: Finished difference. Result has 379 places, 531 transitions, 7761 flow [2024-06-21 21:29:05,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7671, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7761, PETRI_PLACES=379, PETRI_TRANSITIONS=531} [2024-06-21 21:29:05,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-21 21:29:05,113 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 531 transitions, 7761 flow [2024-06-21 21:29:05,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:05,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:05,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:05,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 21:29:05,113 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:05,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1474608512, now seen corresponding path program 7 times [2024-06-21 21:29:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456547090] [2024-06-21 21:29:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:06,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456547090] [2024-06-21 21:29:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456547090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:06,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220572426] [2024-06-21 21:29:06,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:06,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:06,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:06,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:06,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 531 transitions, 7761 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:06,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:06,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:06,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:07,798 INFO L124 PetriNetUnfolderBase]: 3718/5781 cut-off events. [2024-06-21 21:29:07,798 INFO L125 PetriNetUnfolderBase]: For 565450/565453 co-relation queries the response was YES. [2024-06-21 21:29:07,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55915 conditions, 5781 events. 3718/5781 cut-off events. For 565450/565453 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 33644 event pairs, 607 based on Foata normal form. 6/5779 useless extension candidates. Maximal degree in co-relation 55739. Up to 5240 conditions per place. [2024-06-21 21:29:07,875 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 476 selfloop transitions, 80 changer transitions 0/560 dead transitions. [2024-06-21 21:29:07,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 560 transitions, 9166 flow [2024-06-21 21:29:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 21:29:07,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:29:07,876 INFO L175 Difference]: Start difference. First operand has 379 places, 531 transitions, 7761 flow. Second operand 9 states and 160 transitions. [2024-06-21 21:29:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 560 transitions, 9166 flow [2024-06-21 21:29:10,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 560 transitions, 9080 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 21:29:10,302 INFO L231 Difference]: Finished difference. Result has 381 places, 534 transitions, 7969 flow [2024-06-21 21:29:10,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7675, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7969, PETRI_PLACES=381, PETRI_TRANSITIONS=534} [2024-06-21 21:29:10,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-21 21:29:10,302 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 534 transitions, 7969 flow [2024-06-21 21:29:10,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:10,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:10,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 21:29:10,303 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:10,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1488357078, now seen corresponding path program 8 times [2024-06-21 21:29:10,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:10,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667040948] [2024-06-21 21:29:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667040948] [2024-06-21 21:29:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667040948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719871038] [2024-06-21 21:29:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:11,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 534 transitions, 7969 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:12,889 INFO L124 PetriNetUnfolderBase]: 3850/5963 cut-off events. [2024-06-21 21:29:12,889 INFO L125 PetriNetUnfolderBase]: For 654060/654063 co-relation queries the response was YES. [2024-06-21 21:29:12,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60808 conditions, 5963 events. 3850/5963 cut-off events. For 654060/654063 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34639 event pairs, 528 based on Foata normal form. 6/5961 useless extension candidates. Maximal degree in co-relation 60631. Up to 4638 conditions per place. [2024-06-21 21:29:12,982 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 369 selfloop transitions, 206 changer transitions 0/579 dead transitions. [2024-06-21 21:29:12,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 579 transitions, 10513 flow [2024-06-21 21:29:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 21:29:12,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-21 21:29:12,984 INFO L175 Difference]: Start difference. First operand has 381 places, 534 transitions, 7969 flow. Second operand 9 states and 169 transitions. [2024-06-21 21:29:12,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 579 transitions, 10513 flow [2024-06-21 21:29:15,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 579 transitions, 10257 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-21 21:29:15,374 INFO L231 Difference]: Finished difference. Result has 383 places, 549 transitions, 8802 flow [2024-06-21 21:29:15,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7713, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8802, PETRI_PLACES=383, PETRI_TRANSITIONS=549} [2024-06-21 21:29:15,375 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-21 21:29:15,375 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 549 transitions, 8802 flow [2024-06-21 21:29:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:15,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:15,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 21:29:15,375 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:15,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -773959861, now seen corresponding path program 12 times [2024-06-21 21:29:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805606553] [2024-06-21 21:29:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805606553] [2024-06-21 21:29:16,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805606553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:16,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:16,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:29:16,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636840085] [2024-06-21 21:29:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:16,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:29:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:29:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:29:17,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:17,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 549 transitions, 8802 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:17,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:17,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:17,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:18,800 INFO L124 PetriNetUnfolderBase]: 3876/6011 cut-off events. [2024-06-21 21:29:18,801 INFO L125 PetriNetUnfolderBase]: For 680764/680767 co-relation queries the response was YES. [2024-06-21 21:29:18,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62753 conditions, 6011 events. 3876/6011 cut-off events. For 680764/680767 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 35050 event pairs, 536 based on Foata normal form. 4/6007 useless extension candidates. Maximal degree in co-relation 62575. Up to 5157 conditions per place. [2024-06-21 21:29:18,903 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 422 selfloop transitions, 157 changer transitions 0/583 dead transitions. [2024-06-21 21:29:18,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 583 transitions, 10596 flow [2024-06-21 21:29:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-21 21:29:18,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-21 21:29:18,904 INFO L175 Difference]: Start difference. First operand has 383 places, 549 transitions, 8802 flow. Second operand 9 states and 159 transitions. [2024-06-21 21:29:18,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 583 transitions, 10596 flow [2024-06-21 21:29:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 583 transitions, 10320 flow, removed 127 selfloop flow, removed 2 redundant places. [2024-06-21 21:29:21,583 INFO L231 Difference]: Finished difference. Result has 391 places, 559 transitions, 9234 flow [2024-06-21 21:29:21,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8526, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9234, PETRI_PLACES=391, PETRI_TRANSITIONS=559} [2024-06-21 21:29:21,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-21 21:29:21,583 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 559 transitions, 9234 flow [2024-06-21 21:29:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:21,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:21,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 21:29:21,583 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:21,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1488090168, now seen corresponding path program 9 times [2024-06-21 21:29:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:21,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732497391] [2024-06-21 21:29:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:22,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732497391] [2024-06-21 21:29:22,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732497391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:22,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:22,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:22,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922674273] [2024-06-21 21:29:22,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:22,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:22,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:22,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:22,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:22,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 559 transitions, 9234 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:22,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:22,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:22,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:24,255 INFO L124 PetriNetUnfolderBase]: 3880/6011 cut-off events. [2024-06-21 21:29:24,255 INFO L125 PetriNetUnfolderBase]: For 679076/679079 co-relation queries the response was YES. [2024-06-21 21:29:24,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62084 conditions, 6011 events. 3880/6011 cut-off events. For 679076/679079 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35035 event pairs, 545 based on Foata normal form. 6/6009 useless extension candidates. Maximal degree in co-relation 61903. Up to 4681 conditions per place. [2024-06-21 21:29:24,358 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 381 selfloop transitions, 208 changer transitions 0/593 dead transitions. [2024-06-21 21:29:24,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 593 transitions, 11282 flow [2024-06-21 21:29:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 21:29:24,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 21:29:24,359 INFO L175 Difference]: Start difference. First operand has 391 places, 559 transitions, 9234 flow. Second operand 9 states and 168 transitions. [2024-06-21 21:29:24,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 593 transitions, 11282 flow [2024-06-21 21:29:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 593 transitions, 11025 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-21 21:29:27,407 INFO L231 Difference]: Finished difference. Result has 396 places, 562 transitions, 9499 flow [2024-06-21 21:29:27,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8977, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9499, PETRI_PLACES=396, PETRI_TRANSITIONS=562} [2024-06-21 21:29:27,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-21 21:29:27,408 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 562 transitions, 9499 flow [2024-06-21 21:29:27,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:27,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:27,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 21:29:27,409 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:27,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1660194166, now seen corresponding path program 5 times [2024-06-21 21:29:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345010391] [2024-06-21 21:29:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:28,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345010391] [2024-06-21 21:29:28,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345010391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:28,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:28,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89002010] [2024-06-21 21:29:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:28,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 562 transitions, 9499 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:28,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:28,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:28,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:30,267 INFO L124 PetriNetUnfolderBase]: 3924/6077 cut-off events. [2024-06-21 21:29:30,267 INFO L125 PetriNetUnfolderBase]: For 729203/729206 co-relation queries the response was YES. [2024-06-21 21:29:30,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63727 conditions, 6077 events. 3924/6077 cut-off events. For 729203/729206 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 35446 event pairs, 556 based on Foata normal form. 14/6083 useless extension candidates. Maximal degree in co-relation 63544. Up to 5591 conditions per place. [2024-06-21 21:29:30,363 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 68 changer transitions 0/588 dead transitions. [2024-06-21 21:29:30,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 588 transitions, 10981 flow [2024-06-21 21:29:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:29:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:29:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:29:30,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-21 21:29:30,364 INFO L175 Difference]: Start difference. First operand has 396 places, 562 transitions, 9499 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:29:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 588 transitions, 10981 flow [2024-06-21 21:29:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 588 transitions, 10565 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-21 21:29:32,887 INFO L231 Difference]: Finished difference. Result has 399 places, 563 transitions, 9262 flow [2024-06-21 21:29:32,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9083, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9262, PETRI_PLACES=399, PETRI_TRANSITIONS=563} [2024-06-21 21:29:32,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-21 21:29:32,888 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 563 transitions, 9262 flow [2024-06-21 21:29:32,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:32,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:32,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:32,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 21:29:32,889 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:32,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash -601380416, now seen corresponding path program 6 times [2024-06-21 21:29:32,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187135909] [2024-06-21 21:29:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:33,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:33,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187135909] [2024-06-21 21:29:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187135909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431038989] [2024-06-21 21:29:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:33,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:33,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 563 transitions, 9262 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:33,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:33,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:33,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:35,639 INFO L124 PetriNetUnfolderBase]: 4024/6233 cut-off events. [2024-06-21 21:29:35,639 INFO L125 PetriNetUnfolderBase]: For 779175/779178 co-relation queries the response was YES. [2024-06-21 21:29:35,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66136 conditions, 6233 events. 4024/6233 cut-off events. For 779175/779178 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 36557 event pairs, 570 based on Foata normal form. 10/6235 useless extension candidates. Maximal degree in co-relation 65952. Up to 5521 conditions per place. [2024-06-21 21:29:35,737 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 73 changer transitions 0/593 dead transitions. [2024-06-21 21:29:35,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 593 transitions, 11058 flow [2024-06-21 21:29:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:29:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:29:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 21:29:35,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 21:29:35,738 INFO L175 Difference]: Start difference. First operand has 399 places, 563 transitions, 9262 flow. Second operand 8 states and 144 transitions. [2024-06-21 21:29:35,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 593 transitions, 11058 flow [2024-06-21 21:29:38,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 593 transitions, 10907 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 21:29:38,772 INFO L231 Difference]: Finished difference. Result has 401 places, 565 transitions, 9339 flow [2024-06-21 21:29:38,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9111, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9339, PETRI_PLACES=401, PETRI_TRANSITIONS=565} [2024-06-21 21:29:38,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-21 21:29:38,772 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 565 transitions, 9339 flow [2024-06-21 21:29:38,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:38,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:38,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 21:29:38,773 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:38,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1646377435, now seen corresponding path program 13 times [2024-06-21 21:29:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607172604] [2024-06-21 21:29:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607172604] [2024-06-21 21:29:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607172604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579409005] [2024-06-21 21:29:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:40,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:40,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 565 transitions, 9339 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:40,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:40,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:40,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:41,992 INFO L124 PetriNetUnfolderBase]: 4034/6257 cut-off events. [2024-06-21 21:29:41,992 INFO L125 PetriNetUnfolderBase]: For 770951/770954 co-relation queries the response was YES. [2024-06-21 21:29:42,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66498 conditions, 6257 events. 4034/6257 cut-off events. For 770951/770954 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 36804 event pairs, 586 based on Foata normal form. 4/6253 useless extension candidates. Maximal degree in co-relation 66313. Up to 5785 conditions per place. [2024-06-21 21:29:42,098 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 512 selfloop transitions, 74 changer transitions 0/590 dead transitions. [2024-06-21 21:29:42,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 590 transitions, 10787 flow [2024-06-21 21:29:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-21 21:29:42,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-21 21:29:42,099 INFO L175 Difference]: Start difference. First operand has 401 places, 565 transitions, 9339 flow. Second operand 9 states and 154 transitions. [2024-06-21 21:29:42,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 590 transitions, 10787 flow [2024-06-21 21:29:45,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 590 transitions, 10682 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 21:29:45,732 INFO L231 Difference]: Finished difference. Result has 406 places, 568 transitions, 9542 flow [2024-06-21 21:29:45,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9234, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9542, PETRI_PLACES=406, PETRI_TRANSITIONS=568} [2024-06-21 21:29:45,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-21 21:29:45,733 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 568 transitions, 9542 flow [2024-06-21 21:29:45,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:45,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:45,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:45,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 21:29:45,733 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:45,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1646377652, now seen corresponding path program 10 times [2024-06-21 21:29:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134438212] [2024-06-21 21:29:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:46,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:46,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134438212] [2024-06-21 21:29:46,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134438212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:46,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:46,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:46,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364569192] [2024-06-21 21:29:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:46,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:46,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:46,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:46,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 568 transitions, 9542 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:46,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:46,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:48,624 INFO L124 PetriNetUnfolderBase]: 4054/6285 cut-off events. [2024-06-21 21:29:48,625 INFO L125 PetriNetUnfolderBase]: For 793631/793634 co-relation queries the response was YES. [2024-06-21 21:29:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67180 conditions, 6285 events. 4054/6285 cut-off events. For 793631/793634 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 36950 event pairs, 586 based on Foata normal form. 6/6283 useless extension candidates. Maximal degree in co-relation 66993. Up to 5805 conditions per place. [2024-06-21 21:29:48,718 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 515 selfloop transitions, 75 changer transitions 0/594 dead transitions. [2024-06-21 21:29:48,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 594 transitions, 11018 flow [2024-06-21 21:29:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 21:29:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-21 21:29:48,719 INFO L175 Difference]: Start difference. First operand has 406 places, 568 transitions, 9542 flow. Second operand 9 states and 155 transitions. [2024-06-21 21:29:48,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 594 transitions, 11018 flow [2024-06-21 21:29:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 594 transitions, 10738 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-21 21:29:52,098 INFO L231 Difference]: Finished difference. Result has 408 places, 572 transitions, 9595 flow [2024-06-21 21:29:52,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9262, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9595, PETRI_PLACES=408, PETRI_TRANSITIONS=572} [2024-06-21 21:29:52,098 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-21 21:29:52,098 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 572 transitions, 9595 flow [2024-06-21 21:29:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:52,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:52,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 21:29:52,099 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:52,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash -608053600, now seen corresponding path program 11 times [2024-06-21 21:29:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:52,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050265708] [2024-06-21 21:29:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:29:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:29:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:29:53,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050265708] [2024-06-21 21:29:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050265708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:29:53,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:29:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:29:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128339286] [2024-06-21 21:29:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:29:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:29:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:29:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:29:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:29:53,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:29:53,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 572 transitions, 9595 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:53,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:29:53,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:29:53,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:29:54,917 INFO L124 PetriNetUnfolderBase]: 4080/6321 cut-off events. [2024-06-21 21:29:54,917 INFO L125 PetriNetUnfolderBase]: For 808750/808753 co-relation queries the response was YES. [2024-06-21 21:29:55,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68008 conditions, 6321 events. 4080/6321 cut-off events. For 808750/808753 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37185 event pairs, 590 based on Foata normal form. 4/6317 useless extension candidates. Maximal degree in co-relation 67820. Up to 5726 conditions per place. [2024-06-21 21:29:55,035 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 496 selfloop transitions, 103 changer transitions 0/603 dead transitions. [2024-06-21 21:29:55,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 603 transitions, 11392 flow [2024-06-21 21:29:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:29:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:29:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 21:29:55,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-21 21:29:55,036 INFO L175 Difference]: Start difference. First operand has 408 places, 572 transitions, 9595 flow. Second operand 9 states and 157 transitions. [2024-06-21 21:29:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 603 transitions, 11392 flow [2024-06-21 21:29:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 603 transitions, 11097 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-21 21:29:59,241 INFO L231 Difference]: Finished difference. Result has 411 places, 581 transitions, 9835 flow [2024-06-21 21:29:59,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9300, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9835, PETRI_PLACES=411, PETRI_TRANSITIONS=581} [2024-06-21 21:29:59,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-21 21:29:59,241 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 581 transitions, 9835 flow [2024-06-21 21:29:59,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:29:59,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:29:59,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:29:59,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 21:29:59,242 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:29:59,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:29:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -608320510, now seen corresponding path program 12 times [2024-06-21 21:29:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:29:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560913360] [2024-06-21 21:29:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:29:59,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:29:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:00,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560913360] [2024-06-21 21:30:00,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560913360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481675481] [2024-06-21 21:30:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:00,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:00,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 581 transitions, 9835 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:00,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:00,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:01,998 INFO L124 PetriNetUnfolderBase]: 4132/6393 cut-off events. [2024-06-21 21:30:01,999 INFO L125 PetriNetUnfolderBase]: For 848595/848598 co-relation queries the response was YES. [2024-06-21 21:30:02,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69695 conditions, 6393 events. 4132/6393 cut-off events. For 848595/848598 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 37637 event pairs, 592 based on Foata normal form. 6/6391 useless extension candidates. Maximal degree in co-relation 69505. Up to 5724 conditions per place. [2024-06-21 21:30:02,116 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 499 selfloop transitions, 112 changer transitions 0/615 dead transitions. [2024-06-21 21:30:02,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 615 transitions, 12028 flow [2024-06-21 21:30:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:30:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:30:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-21 21:30:02,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-21 21:30:02,117 INFO L175 Difference]: Start difference. First operand has 411 places, 581 transitions, 9835 flow. Second operand 9 states and 161 transitions. [2024-06-21 21:30:02,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 615 transitions, 12028 flow [2024-06-21 21:30:06,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 615 transitions, 11699 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-21 21:30:06,566 INFO L231 Difference]: Finished difference. Result has 416 places, 591 transitions, 10238 flow [2024-06-21 21:30:06,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9524, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10238, PETRI_PLACES=416, PETRI_TRANSITIONS=591} [2024-06-21 21:30:06,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-21 21:30:06,567 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 591 transitions, 10238 flow [2024-06-21 21:30:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:06,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:06,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:06,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 21:30:06,567 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:06,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -615470567, now seen corresponding path program 14 times [2024-06-21 21:30:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51295336] [2024-06-21 21:30:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51295336] [2024-06-21 21:30:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51295336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:07,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:07,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:07,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602881966] [2024-06-21 21:30:07,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:07,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:07,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:07,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 591 transitions, 10238 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:07,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:07,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:07,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:09,759 INFO L124 PetriNetUnfolderBase]: 4142/6411 cut-off events. [2024-06-21 21:30:09,759 INFO L125 PetriNetUnfolderBase]: For 856609/856612 co-relation queries the response was YES. [2024-06-21 21:30:09,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70330 conditions, 6411 events. 4142/6411 cut-off events. For 856609/856612 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 37761 event pairs, 594 based on Foata normal form. 4/6407 useless extension candidates. Maximal degree in co-relation 70137. Up to 5855 conditions per place. [2024-06-21 21:30:09,866 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 518 selfloop transitions, 93 changer transitions 0/615 dead transitions. [2024-06-21 21:30:09,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 615 transitions, 11732 flow [2024-06-21 21:30:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:30:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:30:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-21 21:30:09,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-21 21:30:09,867 INFO L175 Difference]: Start difference. First operand has 416 places, 591 transitions, 10238 flow. Second operand 9 states and 154 transitions. [2024-06-21 21:30:09,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 615 transitions, 11732 flow [2024-06-21 21:30:14,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 615 transitions, 11499 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-21 21:30:14,049 INFO L231 Difference]: Finished difference. Result has 421 places, 594 transitions, 10357 flow [2024-06-21 21:30:14,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10005, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10357, PETRI_PLACES=421, PETRI_TRANSITIONS=594} [2024-06-21 21:30:14,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-21 21:30:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 594 transitions, 10357 flow [2024-06-21 21:30:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:14,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:14,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 21:30:14,050 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:14,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1526720222, now seen corresponding path program 7 times [2024-06-21 21:30:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894193131] [2024-06-21 21:30:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:14,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894193131] [2024-06-21 21:30:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894193131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:14,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28548532] [2024-06-21 21:30:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 594 transitions, 10357 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:16,965 INFO L124 PetriNetUnfolderBase]: 4226/6550 cut-off events. [2024-06-21 21:30:16,965 INFO L125 PetriNetUnfolderBase]: For 905539/905539 co-relation queries the response was YES. [2024-06-21 21:30:17,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71949 conditions, 6550 events. 4226/6550 cut-off events. For 905539/905539 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 38725 event pairs, 710 based on Foata normal form. 8/6547 useless extension candidates. Maximal degree in co-relation 71754. Up to 6101 conditions per place. [2024-06-21 21:30:17,069 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 569 selfloop transitions, 48 changer transitions 0/621 dead transitions. [2024-06-21 21:30:17,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 621 transitions, 12051 flow [2024-06-21 21:30:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-21 21:30:17,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:30:17,070 INFO L175 Difference]: Start difference. First operand has 421 places, 594 transitions, 10357 flow. Second operand 8 states and 136 transitions. [2024-06-21 21:30:17,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 621 transitions, 12051 flow [2024-06-21 21:30:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 621 transitions, 11727 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-21 21:30:21,238 INFO L231 Difference]: Finished difference. Result has 424 places, 601 transitions, 10332 flow [2024-06-21 21:30:21,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10332, PETRI_PLACES=424, PETRI_TRANSITIONS=601} [2024-06-21 21:30:21,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-21 21:30:21,239 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 601 transitions, 10332 flow [2024-06-21 21:30:21,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:21,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:21,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 21:30:21,239 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:21,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 769796544, now seen corresponding path program 8 times [2024-06-21 21:30:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268688314] [2024-06-21 21:30:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:22,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268688314] [2024-06-21 21:30:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268688314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:22,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:22,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:30:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558720216] [2024-06-21 21:30:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:22,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:30:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:30:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:30:22,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:22,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 601 transitions, 10332 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:22,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:22,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:22,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:24,343 INFO L124 PetriNetUnfolderBase]: 4326/6706 cut-off events. [2024-06-21 21:30:24,343 INFO L125 PetriNetUnfolderBase]: For 988893/988893 co-relation queries the response was YES. [2024-06-21 21:30:24,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75643 conditions, 6706 events. 4326/6706 cut-off events. For 988893/988893 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 39913 event pairs, 719 based on Foata normal form. 8/6703 useless extension candidates. Maximal degree in co-relation 75445. Up to 6065 conditions per place. [2024-06-21 21:30:24,450 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 573 selfloop transitions, 52 changer transitions 0/629 dead transitions. [2024-06-21 21:30:24,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 629 transitions, 12348 flow [2024-06-21 21:30:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:30:24,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-21 21:30:24,451 INFO L175 Difference]: Start difference. First operand has 424 places, 601 transitions, 10332 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:30:24,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 629 transitions, 12348 flow [2024-06-21 21:30:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 629 transitions, 12171 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-21 21:30:29,257 INFO L231 Difference]: Finished difference. Result has 428 places, 603 transitions, 10349 flow [2024-06-21 21:30:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10155, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10349, PETRI_PLACES=428, PETRI_TRANSITIONS=603} [2024-06-21 21:30:29,257 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-21 21:30:29,257 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 603 transitions, 10349 flow [2024-06-21 21:30:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:29,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:29,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 21:30:29,258 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:29,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash 484696674, now seen corresponding path program 9 times [2024-06-21 21:30:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:29,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937494685] [2024-06-21 21:30:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:30,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937494685] [2024-06-21 21:30:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937494685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78061402] [2024-06-21 21:30:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:30,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:30,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:30,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:30,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 603 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:30,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:30,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:30,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:32,482 INFO L124 PetriNetUnfolderBase]: 4413/6849 cut-off events. [2024-06-21 21:30:32,482 INFO L125 PetriNetUnfolderBase]: For 1062866/1062866 co-relation queries the response was YES. [2024-06-21 21:30:32,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78387 conditions, 6849 events. 4413/6849 cut-off events. For 1062866/1062866 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 41104 event pairs, 778 based on Foata normal form. 8/6846 useless extension candidates. Maximal degree in co-relation 78188. Up to 6196 conditions per place. [2024-06-21 21:30:32,598 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 550 selfloop transitions, 76 changer transitions 0/630 dead transitions. [2024-06-21 21:30:32,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 630 transitions, 12317 flow [2024-06-21 21:30:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 21:30:32,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:30:32,599 INFO L175 Difference]: Start difference. First operand has 428 places, 603 transitions, 10349 flow. Second operand 8 states and 140 transitions. [2024-06-21 21:30:32,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 630 transitions, 12317 flow [2024-06-21 21:30:37,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 630 transitions, 12213 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 21:30:37,049 INFO L231 Difference]: Finished difference. Result has 432 places, 605 transitions, 10499 flow [2024-06-21 21:30:37,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10253, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10499, PETRI_PLACES=432, PETRI_TRANSITIONS=605} [2024-06-21 21:30:37,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-21 21:30:37,050 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 605 transitions, 10499 flow [2024-06-21 21:30:37,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:37,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:37,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:37,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 21:30:37,050 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:37,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash 484458346, now seen corresponding path program 2 times [2024-06-21 21:30:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647273309] [2024-06-21 21:30:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:38,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:38,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647273309] [2024-06-21 21:30:38,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647273309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:38,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:38,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889129053] [2024-06-21 21:30:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:38,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:38,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:38,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:38,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 605 transitions, 10499 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:38,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:38,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:38,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:40,118 INFO L124 PetriNetUnfolderBase]: 4431/6873 cut-off events. [2024-06-21 21:30:40,118 INFO L125 PetriNetUnfolderBase]: For 1053346/1053349 co-relation queries the response was YES. [2024-06-21 21:30:40,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79067 conditions, 6873 events. 4431/6873 cut-off events. For 1053346/1053349 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41245 event pairs, 771 based on Foata normal form. 3/6868 useless extension candidates. Maximal degree in co-relation 78866. Up to 6422 conditions per place. [2024-06-21 21:30:40,251 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 545 selfloop transitions, 86 changer transitions 0/635 dead transitions. [2024-06-21 21:30:40,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 635 transitions, 12556 flow [2024-06-21 21:30:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-21 21:30:40,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:30:40,252 INFO L175 Difference]: Start difference. First operand has 432 places, 605 transitions, 10499 flow. Second operand 8 states and 135 transitions. [2024-06-21 21:30:40,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 635 transitions, 12556 flow [2024-06-21 21:30:46,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 635 transitions, 12427 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 21:30:46,528 INFO L231 Difference]: Finished difference. Result has 439 places, 619 transitions, 11163 flow [2024-06-21 21:30:46,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10376, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11163, PETRI_PLACES=439, PETRI_TRANSITIONS=619} [2024-06-21 21:30:46,528 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-21 21:30:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 619 transitions, 11163 flow [2024-06-21 21:30:46,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:46,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:46,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 21:30:46,529 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:46,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 484221444, now seen corresponding path program 10 times [2024-06-21 21:30:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832047301] [2024-06-21 21:30:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832047301] [2024-06-21 21:30:47,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832047301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:47,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:47,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521589856] [2024-06-21 21:30:47,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:47,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:47,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 619 transitions, 11163 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:47,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:47,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:47,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:49,700 INFO L124 PetriNetUnfolderBase]: 4475/6944 cut-off events. [2024-06-21 21:30:49,700 INFO L125 PetriNetUnfolderBase]: For 1139704/1139704 co-relation queries the response was YES. [2024-06-21 21:30:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80908 conditions, 6944 events. 4475/6944 cut-off events. For 1139704/1139704 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41783 event pairs, 792 based on Foata normal form. 12/6945 useless extension candidates. Maximal degree in co-relation 80702. Up to 6452 conditions per place. [2024-06-21 21:30:49,835 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 558 selfloop transitions, 79 changer transitions 0/641 dead transitions. [2024-06-21 21:30:49,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 641 transitions, 12785 flow [2024-06-21 21:30:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-21 21:30:49,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-21 21:30:49,836 INFO L175 Difference]: Start difference. First operand has 439 places, 619 transitions, 11163 flow. Second operand 8 states and 138 transitions. [2024-06-21 21:30:49,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 641 transitions, 12785 flow [2024-06-21 21:30:55,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 641 transitions, 12466 flow, removed 150 selfloop flow, removed 3 redundant places. [2024-06-21 21:30:55,543 INFO L231 Difference]: Finished difference. Result has 444 places, 620 transitions, 11085 flow [2024-06-21 21:30:55,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10876, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11085, PETRI_PLACES=444, PETRI_TRANSITIONS=620} [2024-06-21 21:30:55,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-21 21:30:55,544 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 620 transitions, 11085 flow [2024-06-21 21:30:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:55,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:30:55,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:30:55,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 21:30:55,545 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:30:55,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:30:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash 484221196, now seen corresponding path program 3 times [2024-06-21 21:30:55,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:30:55,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353654534] [2024-06-21 21:30:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:30:55,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:30:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:30:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:30:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:30:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353654534] [2024-06-21 21:30:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353654534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:30:56,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:30:56,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:30:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138798075] [2024-06-21 21:30:56,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:30:56,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:30:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:30:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:30:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:30:56,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:30:56,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 620 transitions, 11085 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:30:56,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:30:56,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:30:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:30:58,682 INFO L124 PetriNetUnfolderBase]: 4485/6957 cut-off events. [2024-06-21 21:30:58,682 INFO L125 PetriNetUnfolderBase]: For 1091545/1091548 co-relation queries the response was YES. [2024-06-21 21:30:58,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81110 conditions, 6957 events. 4485/6957 cut-off events. For 1091545/1091548 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 41895 event pairs, 781 based on Foata normal form. 4/6953 useless extension candidates. Maximal degree in co-relation 80903. Up to 6578 conditions per place. [2024-06-21 21:30:58,815 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 573 selfloop transitions, 64 changer transitions 0/641 dead transitions. [2024-06-21 21:30:58,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 641 transitions, 12641 flow [2024-06-21 21:30:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:30:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:30:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-21 21:30:58,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 21:30:58,816 INFO L175 Difference]: Start difference. First operand has 444 places, 620 transitions, 11085 flow. Second operand 8 states and 134 transitions. [2024-06-21 21:30:58,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 641 transitions, 12641 flow [2024-06-21 21:31:04,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 641 transitions, 12448 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 21:31:04,959 INFO L231 Difference]: Finished difference. Result has 446 places, 624 transitions, 11214 flow [2024-06-21 21:31:04,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10892, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11214, PETRI_PLACES=446, PETRI_TRANSITIONS=624} [2024-06-21 21:31:04,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-21 21:31:04,960 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 624 transitions, 11214 flow [2024-06-21 21:31:04,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:04,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:04,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:04,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 21:31:04,960 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:04,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash 307089676, now seen corresponding path program 4 times [2024-06-21 21:31:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:04,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416238845] [2024-06-21 21:31:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:05,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:05,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416238845] [2024-06-21 21:31:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416238845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:31:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914257320] [2024-06-21 21:31:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:31:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:05,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:31:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:31:05,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:05,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 624 transitions, 11214 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:05,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:05,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:05,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:08,015 INFO L124 PetriNetUnfolderBase]: 4479/6947 cut-off events. [2024-06-21 21:31:08,015 INFO L125 PetriNetUnfolderBase]: For 1091193/1091196 co-relation queries the response was YES. [2024-06-21 21:31:08,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80643 conditions, 6947 events. 4479/6947 cut-off events. For 1091193/1091196 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 41792 event pairs, 809 based on Foata normal form. 4/6943 useless extension candidates. Maximal degree in co-relation 80435. Up to 6635 conditions per place. [2024-06-21 21:31:08,153 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 590 selfloop transitions, 45 changer transitions 0/639 dead transitions. [2024-06-21 21:31:08,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 639 transitions, 12568 flow [2024-06-21 21:31:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:31:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:31:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-21 21:31:08,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:31:08,154 INFO L175 Difference]: Start difference. First operand has 446 places, 624 transitions, 11214 flow. Second operand 8 states and 132 transitions. [2024-06-21 21:31:08,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 639 transitions, 12568 flow [2024-06-21 21:31:14,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 639 transitions, 12249 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-06-21 21:31:14,893 INFO L231 Difference]: Finished difference. Result has 448 places, 624 transitions, 10997 flow [2024-06-21 21:31:14,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10895, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10997, PETRI_PLACES=448, PETRI_TRANSITIONS=624} [2024-06-21 21:31:14,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-21 21:31:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 624 transitions, 10997 flow [2024-06-21 21:31:14,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 21:31:14,894 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 308873862, now seen corresponding path program 11 times [2024-06-21 21:31:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440531018] [2024-06-21 21:31:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:15,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:15,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440531018] [2024-06-21 21:31:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440531018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:15,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:15,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:31:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259011634] [2024-06-21 21:31:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:15,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:31:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:31:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:31:16,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:16,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 624 transitions, 10997 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:16,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:16,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:16,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:18,194 INFO L124 PetriNetUnfolderBase]: 4510/6995 cut-off events. [2024-06-21 21:31:18,194 INFO L125 PetriNetUnfolderBase]: For 1134465/1134465 co-relation queries the response was YES. [2024-06-21 21:31:18,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80758 conditions, 6995 events. 4510/6995 cut-off events. For 1134465/1134465 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42165 event pairs, 821 based on Foata normal form. 12/6996 useless extension candidates. Maximal degree in co-relation 80550. Up to 6571 conditions per place. [2024-06-21 21:31:18,322 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 586 selfloop transitions, 54 changer transitions 0/644 dead transitions. [2024-06-21 21:31:18,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 644 transitions, 12571 flow [2024-06-21 21:31:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:31:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:31:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 21:31:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 21:31:18,323 INFO L175 Difference]: Start difference. First operand has 448 places, 624 transitions, 10997 flow. Second operand 8 states and 137 transitions. [2024-06-21 21:31:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 644 transitions, 12571 flow [2024-06-21 21:31:24,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 644 transitions, 12367 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 21:31:24,830 INFO L231 Difference]: Finished difference. Result has 448 places, 625 transitions, 10958 flow [2024-06-21 21:31:24,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10793, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10958, PETRI_PLACES=448, PETRI_TRANSITIONS=625} [2024-06-21 21:31:24,830 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-21 21:31:24,830 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 625 transitions, 10958 flow [2024-06-21 21:31:24,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:24,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:24,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:24,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 21:31:24,831 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:24,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash 922280096, now seen corresponding path program 12 times [2024-06-21 21:31:24,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:24,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494218440] [2024-06-21 21:31:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494218440] [2024-06-21 21:31:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494218440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:25,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:31:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875759478] [2024-06-21 21:31:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:25,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:31:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:31:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:31:25,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:25,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 625 transitions, 10958 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:25,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:25,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:25,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:27,853 INFO L124 PetriNetUnfolderBase]: 4525/7021 cut-off events. [2024-06-21 21:31:27,853 INFO L125 PetriNetUnfolderBase]: For 1104529/1104532 co-relation queries the response was YES. [2024-06-21 21:31:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80823 conditions, 7021 events. 4525/7021 cut-off events. For 1104529/1104532 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42365 event pairs, 815 based on Foata normal form. 10/7023 useless extension candidates. Maximal degree in co-relation 80615. Up to 6713 conditions per place. [2024-06-21 21:31:27,989 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 605 selfloop transitions, 34 changer transitions 0/643 dead transitions. [2024-06-21 21:31:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 643 transitions, 12433 flow [2024-06-21 21:31:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:31:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:31:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-21 21:31:27,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:31:27,990 INFO L175 Difference]: Start difference. First operand has 448 places, 625 transitions, 10958 flow. Second operand 8 states and 130 transitions. [2024-06-21 21:31:27,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 643 transitions, 12433 flow [2024-06-21 21:31:33,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 643 transitions, 12310 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 21:31:33,524 INFO L231 Difference]: Finished difference. Result has 451 places, 627 transitions, 10969 flow [2024-06-21 21:31:33,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10835, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10969, PETRI_PLACES=451, PETRI_TRANSITIONS=627} [2024-06-21 21:31:33,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-21 21:31:33,524 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 627 transitions, 10969 flow [2024-06-21 21:31:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:33,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:33,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:33,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 21:31:33,525 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:33,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash -87286112, now seen corresponding path program 13 times [2024-06-21 21:31:33,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:33,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140150448] [2024-06-21 21:31:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140150448] [2024-06-21 21:31:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140150448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:34,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:31:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655456855] [2024-06-21 21:31:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:31:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:31:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:31:34,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:34,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 627 transitions, 10969 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:34,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:34,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:34,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:36,647 INFO L124 PetriNetUnfolderBase]: 4601/7129 cut-off events. [2024-06-21 21:31:36,648 INFO L125 PetriNetUnfolderBase]: For 1160079/1160079 co-relation queries the response was YES. [2024-06-21 21:31:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82870 conditions, 7129 events. 4601/7129 cut-off events. For 1160079/1160079 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 43054 event pairs, 824 based on Foata normal form. 12/7130 useless extension candidates. Maximal degree in co-relation 82660. Up to 6722 conditions per place. [2024-06-21 21:31:36,794 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 596 selfloop transitions, 54 changer transitions 0/654 dead transitions. [2024-06-21 21:31:36,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 654 transitions, 13097 flow [2024-06-21 21:31:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:31:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:31:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-21 21:31:36,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:31:36,796 INFO L175 Difference]: Start difference. First operand has 451 places, 627 transitions, 10969 flow. Second operand 9 states and 150 transitions. [2024-06-21 21:31:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 654 transitions, 13097 flow [2024-06-21 21:31:43,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 654 transitions, 12986 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 21:31:43,360 INFO L231 Difference]: Finished difference. Result has 456 places, 637 transitions, 11510 flow [2024-06-21 21:31:43,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10858, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11510, PETRI_PLACES=456, PETRI_TRANSITIONS=637} [2024-06-21 21:31:43,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-21 21:31:43,361 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 637 transitions, 11510 flow [2024-06-21 21:31:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:43,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:43,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:43,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 21:31:43,361 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:43,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -91010979, now seen corresponding path program 15 times [2024-06-21 21:31:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:43,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977769632] [2024-06-21 21:31:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:43,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:44,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:44,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977769632] [2024-06-21 21:31:44,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977769632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:44,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:44,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:31:44,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471697036] [2024-06-21 21:31:44,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:44,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:31:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:31:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:31:44,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:44,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 637 transitions, 11510 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:44,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:44,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:44,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:46,576 INFO L124 PetriNetUnfolderBase]: 4587/7109 cut-off events. [2024-06-21 21:31:46,576 INFO L125 PetriNetUnfolderBase]: For 1126332/1126332 co-relation queries the response was YES. [2024-06-21 21:31:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82943 conditions, 7109 events. 4587/7109 cut-off events. For 1126332/1126332 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 42913 event pairs, 844 based on Foata normal form. 2/7100 useless extension candidates. Maximal degree in co-relation 82731. Up to 6789 conditions per place. [2024-06-21 21:31:46,712 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 605 selfloop transitions, 41 changer transitions 0/650 dead transitions. [2024-06-21 21:31:46,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 650 transitions, 12860 flow [2024-06-21 21:31:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:31:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:31:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-21 21:31:46,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-21 21:31:46,713 INFO L175 Difference]: Start difference. First operand has 456 places, 637 transitions, 11510 flow. Second operand 9 states and 143 transitions. [2024-06-21 21:31:46,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 650 transitions, 12860 flow [2024-06-21 21:31:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 650 transitions, 12415 flow, removed 197 selfloop flow, removed 5 redundant places. [2024-06-21 21:31:52,876 INFO L231 Difference]: Finished difference. Result has 460 places, 637 transitions, 11153 flow [2024-06-21 21:31:52,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11065, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11153, PETRI_PLACES=460, PETRI_TRANSITIONS=637} [2024-06-21 21:31:52,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-21 21:31:52,877 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 637 transitions, 11153 flow [2024-06-21 21:31:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:52,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:31:52,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:31:52,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 21:31:52,877 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:31:52,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:31:52,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175145, now seen corresponding path program 16 times [2024-06-21 21:31:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:31:52,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3556872] [2024-06-21 21:31:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:31:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:31:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:31:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:31:53,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:31:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3556872] [2024-06-21 21:31:53,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3556872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:31:53,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:31:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:31:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012496184] [2024-06-21 21:31:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:31:53,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:31:53,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:31:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:31:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:31:54,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:31:54,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 637 transitions, 11153 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:31:54,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:31:54,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:31:54,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:31:56,215 INFO L124 PetriNetUnfolderBase]: 4597/7134 cut-off events. [2024-06-21 21:31:56,216 INFO L125 PetriNetUnfolderBase]: For 1131430/1131433 co-relation queries the response was YES. [2024-06-21 21:31:56,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82420 conditions, 7134 events. 4597/7134 cut-off events. For 1131430/1131433 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 43214 event pairs, 794 based on Foata normal form. 4/7130 useless extension candidates. Maximal degree in co-relation 82206. Up to 6698 conditions per place. [2024-06-21 21:31:56,368 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 591 selfloop transitions, 63 changer transitions 0/658 dead transitions. [2024-06-21 21:31:56,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 658 transitions, 12937 flow [2024-06-21 21:31:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:31:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:31:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-21 21:31:56,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-21 21:31:56,369 INFO L175 Difference]: Start difference. First operand has 460 places, 637 transitions, 11153 flow. Second operand 9 states and 148 transitions. [2024-06-21 21:31:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 658 transitions, 12937 flow [2024-06-21 21:32:03,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 658 transitions, 12828 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 21:32:03,128 INFO L231 Difference]: Finished difference. Result has 461 places, 640 transitions, 11336 flow [2024-06-21 21:32:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11336, PETRI_PLACES=461, PETRI_TRANSITIONS=640} [2024-06-21 21:32:03,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-21 21:32:03,128 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 640 transitions, 11336 flow [2024-06-21 21:32:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:03,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:03,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 21:32:03,129 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:03,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -87286329, now seen corresponding path program 17 times [2024-06-21 21:32:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408522278] [2024-06-21 21:32:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:04,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:04,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408522278] [2024-06-21 21:32:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408522278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:04,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664096654] [2024-06-21 21:32:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:04,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:04,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 640 transitions, 11336 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:04,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:04,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:04,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:06,480 INFO L124 PetriNetUnfolderBase]: 4607/7147 cut-off events. [2024-06-21 21:32:06,481 INFO L125 PetriNetUnfolderBase]: For 1150849/1150849 co-relation queries the response was YES. [2024-06-21 21:32:06,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82962 conditions, 7147 events. 4607/7147 cut-off events. For 1150849/1150849 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 43246 event pairs, 834 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 82747. Up to 6779 conditions per place. [2024-06-21 21:32:06,622 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 604 selfloop transitions, 50 changer transitions 0/658 dead transitions. [2024-06-21 21:32:06,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 658 transitions, 12892 flow [2024-06-21 21:32:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:32:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:32:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-21 21:32:06,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-21 21:32:06,623 INFO L175 Difference]: Start difference. First operand has 461 places, 640 transitions, 11336 flow. Second operand 9 states and 147 transitions. [2024-06-21 21:32:06,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 658 transitions, 12892 flow [2024-06-21 21:32:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 658 transitions, 12508 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-21 21:32:12,819 INFO L231 Difference]: Finished difference. Result has 463 places, 643 transitions, 11230 flow [2024-06-21 21:32:12,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10980, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11230, PETRI_PLACES=463, PETRI_TRANSITIONS=643} [2024-06-21 21:32:12,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-21 21:32:12,820 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 643 transitions, 11230 flow [2024-06-21 21:32:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:12,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:12,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 21:32:12,820 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:12,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1116442272, now seen corresponding path program 14 times [2024-06-21 21:32:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506321337] [2024-06-21 21:32:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:13,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506321337] [2024-06-21 21:32:13,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506321337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:13,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:13,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:13,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542281640] [2024-06-21 21:32:13,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:13,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:13,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:13,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 643 transitions, 11230 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:13,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:15,955 INFO L124 PetriNetUnfolderBase]: 4617/7158 cut-off events. [2024-06-21 21:32:15,955 INFO L125 PetriNetUnfolderBase]: For 1169308/1169311 co-relation queries the response was YES. [2024-06-21 21:32:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82892 conditions, 7158 events. 4617/7158 cut-off events. For 1169308/1169311 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43351 event pairs, 776 based on Foata normal form. 4/7154 useless extension candidates. Maximal degree in co-relation 82676. Up to 6683 conditions per place. [2024-06-21 21:32:16,095 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 595 selfloop transitions, 73 changer transitions 0/672 dead transitions. [2024-06-21 21:32:16,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 672 transitions, 13281 flow [2024-06-21 21:32:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:32:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:32:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-21 21:32:16,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:32:16,096 INFO L175 Difference]: Start difference. First operand has 463 places, 643 transitions, 11230 flow. Second operand 9 states and 150 transitions. [2024-06-21 21:32:16,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 672 transitions, 13281 flow [2024-06-21 21:32:22,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 672 transitions, 13059 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-21 21:32:22,722 INFO L231 Difference]: Finished difference. Result has 466 places, 654 transitions, 11590 flow [2024-06-21 21:32:22,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11008, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11590, PETRI_PLACES=466, PETRI_TRANSITIONS=654} [2024-06-21 21:32:22,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-21 21:32:22,722 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 654 transitions, 11590 flow [2024-06-21 21:32:22,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:22,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:22,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 21:32:22,723 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:22,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175362, now seen corresponding path program 15 times [2024-06-21 21:32:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153277042] [2024-06-21 21:32:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:23,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153277042] [2024-06-21 21:32:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153277042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:23,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347859438] [2024-06-21 21:32:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:23,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:23,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 654 transitions, 11590 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:23,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:23,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:23,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:25,792 INFO L124 PetriNetUnfolderBase]: 4653/7208 cut-off events. [2024-06-21 21:32:25,792 INFO L125 PetriNetUnfolderBase]: For 1209119/1209122 co-relation queries the response was YES. [2024-06-21 21:32:25,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84316 conditions, 7208 events. 4653/7208 cut-off events. For 1209119/1209122 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43624 event pairs, 775 based on Foata normal form. 6/7206 useless extension candidates. Maximal degree in co-relation 84098. Up to 6634 conditions per place. [2024-06-21 21:32:25,937 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 589 selfloop transitions, 89 changer transitions 0/682 dead transitions. [2024-06-21 21:32:25,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 682 transitions, 13923 flow [2024-06-21 21:32:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:32:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:32:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-21 21:32:25,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-21 21:32:25,939 INFO L175 Difference]: Start difference. First operand has 466 places, 654 transitions, 11590 flow. Second operand 9 states and 154 transitions. [2024-06-21 21:32:25,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 682 transitions, 13923 flow [2024-06-21 21:32:31,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 682 transitions, 13629 flow, removed 112 selfloop flow, removed 5 redundant places. [2024-06-21 21:32:32,004 INFO L231 Difference]: Finished difference. Result has 470 places, 662 transitions, 11894 flow [2024-06-21 21:32:32,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11332, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11894, PETRI_PLACES=470, PETRI_TRANSITIONS=662} [2024-06-21 21:32:32,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-21 21:32:32,004 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 662 transitions, 11894 flow [2024-06-21 21:32:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:32,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:32,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:32,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 21:32:32,005 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:32,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823495, now seen corresponding path program 18 times [2024-06-21 21:32:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248733521] [2024-06-21 21:32:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:33,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248733521] [2024-06-21 21:32:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248733521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:33,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:33,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731180609] [2024-06-21 21:32:33,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:33,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:33,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 662 transitions, 11894 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:33,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:33,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:33,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:35,483 INFO L124 PetriNetUnfolderBase]: 4647/7208 cut-off events. [2024-06-21 21:32:35,483 INFO L125 PetriNetUnfolderBase]: For 1202617/1202620 co-relation queries the response was YES. [2024-06-21 21:32:35,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83983 conditions, 7208 events. 4647/7208 cut-off events. For 1202617/1202620 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 43693 event pairs, 817 based on Foata normal form. 4/7204 useless extension candidates. Maximal degree in co-relation 83763. Up to 6847 conditions per place. [2024-06-21 21:32:35,640 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 629 selfloop transitions, 47 changer transitions 0/680 dead transitions. [2024-06-21 21:32:35,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 680 transitions, 13358 flow [2024-06-21 21:32:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:32:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:32:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-21 21:32:35,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-21 21:32:35,641 INFO L175 Difference]: Start difference. First operand has 470 places, 662 transitions, 11894 flow. Second operand 9 states and 147 transitions. [2024-06-21 21:32:35,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 680 transitions, 13358 flow [2024-06-21 21:32:42,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 680 transitions, 12628 flow, removed 173 selfloop flow, removed 8 redundant places. [2024-06-21 21:32:42,763 INFO L231 Difference]: Finished difference. Result has 471 places, 662 transitions, 11264 flow [2024-06-21 21:32:42,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11164, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11264, PETRI_PLACES=471, PETRI_TRANSITIONS=662} [2024-06-21 21:32:42,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-21 21:32:42,763 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 662 transitions, 11264 flow [2024-06-21 21:32:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 21:32:42,764 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:42,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823712, now seen corresponding path program 16 times [2024-06-21 21:32:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223438416] [2024-06-21 21:32:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223438416] [2024-06-21 21:32:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223438416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:43,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:43,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835923462] [2024-06-21 21:32:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:43,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:43,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:43,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:43,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 662 transitions, 11264 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:43,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:43,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:43,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:45,889 INFO L124 PetriNetUnfolderBase]: 4635/7190 cut-off events. [2024-06-21 21:32:45,889 INFO L125 PetriNetUnfolderBase]: For 1197768/1197771 co-relation queries the response was YES. [2024-06-21 21:32:45,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82069 conditions, 7190 events. 4635/7190 cut-off events. For 1197768/1197771 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 43547 event pairs, 807 based on Foata normal form. 6/7188 useless extension candidates. Maximal degree in co-relation 81850. Up to 6823 conditions per place. [2024-06-21 21:32:46,028 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 629 selfloop transitions, 48 changer transitions 0/681 dead transitions. [2024-06-21 21:32:46,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 681 transitions, 12753 flow [2024-06-21 21:32:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:32:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:32:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-21 21:32:46,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-21 21:32:46,029 INFO L175 Difference]: Start difference. First operand has 471 places, 662 transitions, 11264 flow. Second operand 9 states and 148 transitions. [2024-06-21 21:32:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 681 transitions, 12753 flow [2024-06-21 21:32:52,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 681 transitions, 12467 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-21 21:32:52,931 INFO L231 Difference]: Finished difference. Result has 472 places, 663 transitions, 11106 flow [2024-06-21 21:32:52,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10990, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11106, PETRI_PLACES=472, PETRI_TRANSITIONS=663} [2024-06-21 21:32:52,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-21 21:32:52,932 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 663 transitions, 11106 flow [2024-06-21 21:32:52,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:52,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:32:52,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:32:52,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 21:32:52,932 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:32:52,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:32:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2145827998, now seen corresponding path program 13 times [2024-06-21 21:32:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:32:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715489324] [2024-06-21 21:32:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:32:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:32:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:32:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:32:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:32:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715489324] [2024-06-21 21:32:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715489324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:32:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:32:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:32:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741252419] [2024-06-21 21:32:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:32:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:32:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:32:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:32:53,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:32:53,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:32:53,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 663 transitions, 11106 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:32:53,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:32:53,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:32:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:32:56,289 INFO L124 PetriNetUnfolderBase]: 4607/7146 cut-off events. [2024-06-21 21:32:56,289 INFO L125 PetriNetUnfolderBase]: For 1183429/1183432 co-relation queries the response was YES. [2024-06-21 21:32:56,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80011 conditions, 7146 events. 4607/7146 cut-off events. For 1183429/1183432 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 43255 event pairs, 701 based on Foata normal form. 14/7152 useless extension candidates. Maximal degree in co-relation 79791. Up to 6637 conditions per place. [2024-06-21 21:32:56,424 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 623 selfloop transitions, 60 changer transitions 0/687 dead transitions. [2024-06-21 21:32:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 687 transitions, 12756 flow [2024-06-21 21:32:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:32:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:32:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 21:32:56,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-21 21:32:56,425 INFO L175 Difference]: Start difference. First operand has 472 places, 663 transitions, 11106 flow. Second operand 8 states and 141 transitions. [2024-06-21 21:32:56,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 687 transitions, 12756 flow [2024-06-21 21:33:03,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 687 transitions, 12621 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 21:33:03,176 INFO L231 Difference]: Finished difference. Result has 473 places, 663 transitions, 11102 flow [2024-06-21 21:33:03,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10971, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11102, PETRI_PLACES=473, PETRI_TRANSITIONS=663} [2024-06-21 21:33:03,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-21 21:33:03,177 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 663 transitions, 11102 flow [2024-06-21 21:33:03,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:03,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:03,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 21:33:03,178 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:03,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -891830944, now seen corresponding path program 1 times [2024-06-21 21:33:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116063603] [2024-06-21 21:33:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116063603] [2024-06-21 21:33:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116063603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:04,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:04,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:33:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453422709] [2024-06-21 21:33:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:33:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:33:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:33:04,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:33:04,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 663 transitions, 11102 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:04,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:04,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:33:04,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:07,435 INFO L124 PetriNetUnfolderBase]: 5088/7908 cut-off events. [2024-06-21 21:33:07,435 INFO L125 PetriNetUnfolderBase]: For 1806648/1806651 co-relation queries the response was YES. [2024-06-21 21:33:07,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94421 conditions, 7908 events. 5088/7908 cut-off events. For 1806648/1806651 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 48225 event pairs, 919 based on Foata normal form. 50/7950 useless extension candidates. Maximal degree in co-relation 94200. Up to 6429 conditions per place. [2024-06-21 21:33:07,602 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 611 selfloop transitions, 102 changer transitions 5/722 dead transitions. [2024-06-21 21:33:07,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 722 transitions, 13562 flow [2024-06-21 21:33:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:33:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:33:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-21 21:33:07,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-21 21:33:07,604 INFO L175 Difference]: Start difference. First operand has 473 places, 663 transitions, 11102 flow. Second operand 11 states and 206 transitions. [2024-06-21 21:33:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 722 transitions, 13562 flow [2024-06-21 21:33:15,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 722 transitions, 13432 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 21:33:15,290 INFO L231 Difference]: Finished difference. Result has 479 places, 672 transitions, 11484 flow [2024-06-21 21:33:15,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10972, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11484, PETRI_PLACES=479, PETRI_TRANSITIONS=672} [2024-06-21 21:33:15,290 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-21 21:33:15,290 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 672 transitions, 11484 flow [2024-06-21 21:33:15,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:15,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:15,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 21:33:15,290 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:15,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1483783028, now seen corresponding path program 2 times [2024-06-21 21:33:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92162746] [2024-06-21 21:33:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92162746] [2024-06-21 21:33:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92162746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:16,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:33:16,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050467271] [2024-06-21 21:33:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:33:16,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:33:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:33:16,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:33:16,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 672 transitions, 11484 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:16,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:33:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:19,564 INFO L124 PetriNetUnfolderBase]: 5098/7950 cut-off events. [2024-06-21 21:33:19,564 INFO L125 PetriNetUnfolderBase]: For 1896861/1896864 co-relation queries the response was YES. [2024-06-21 21:33:19,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89751 conditions, 7950 events. 5098/7950 cut-off events. For 1896861/1896864 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 48844 event pairs, 1005 based on Foata normal form. 112/8054 useless extension candidates. Maximal degree in co-relation 89527. Up to 6728 conditions per place. [2024-06-21 21:33:19,717 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 604 selfloop transitions, 99 changer transitions 6/713 dead transitions. [2024-06-21 21:33:19,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 713 transitions, 13399 flow [2024-06-21 21:33:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:33:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:33:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-21 21:33:19,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-21 21:33:19,718 INFO L175 Difference]: Start difference. First operand has 479 places, 672 transitions, 11484 flow. Second operand 11 states and 196 transitions. [2024-06-21 21:33:19,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 713 transitions, 13399 flow [2024-06-21 21:33:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 713 transitions, 13132 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-21 21:33:27,777 INFO L231 Difference]: Finished difference. Result has 484 places, 672 transitions, 11565 flow [2024-06-21 21:33:27,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11245, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11565, PETRI_PLACES=484, PETRI_TRANSITIONS=672} [2024-06-21 21:33:27,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-21 21:33:27,778 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 672 transitions, 11565 flow [2024-06-21 21:33:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:27,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:27,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:27,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 21:33:27,778 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1488544938, now seen corresponding path program 1 times [2024-06-21 21:33:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049888586] [2024-06-21 21:33:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:29,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049888586] [2024-06-21 21:33:29,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049888586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:29,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:29,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:33:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39723686] [2024-06-21 21:33:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:29,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:33:29,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:33:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:33:29,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:33:29,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 672 transitions, 11565 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:29,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:29,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:33:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:32,198 INFO L124 PetriNetUnfolderBase]: 5018/7827 cut-off events. [2024-06-21 21:33:32,199 INFO L125 PetriNetUnfolderBase]: For 1233759/1233759 co-relation queries the response was YES. [2024-06-21 21:33:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88129 conditions, 7827 events. 5018/7827 cut-off events. For 1233759/1233759 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 48030 event pairs, 1014 based on Foata normal form. 2/7826 useless extension candidates. Maximal degree in co-relation 87904. Up to 7499 conditions per place. [2024-06-21 21:33:32,333 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 650 selfloop transitions, 42 changer transitions 0/696 dead transitions. [2024-06-21 21:33:32,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 696 transitions, 13141 flow [2024-06-21 21:33:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:33:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:33:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-21 21:33:32,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-21 21:33:32,334 INFO L175 Difference]: Start difference. First operand has 484 places, 672 transitions, 11565 flow. Second operand 9 states and 152 transitions. [2024-06-21 21:33:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 696 transitions, 13141 flow [2024-06-21 21:33:40,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 696 transitions, 12917 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 21:33:40,341 INFO L231 Difference]: Finished difference. Result has 485 places, 674 transitions, 11514 flow [2024-06-21 21:33:40,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11341, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11514, PETRI_PLACES=485, PETRI_TRANSITIONS=674} [2024-06-21 21:33:40,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-21 21:33:40,341 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 674 transitions, 11514 flow [2024-06-21 21:33:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:40,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 21:33:40,342 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1488551448, now seen corresponding path program 2 times [2024-06-21 21:33:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052538788] [2024-06-21 21:33:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052538788] [2024-06-21 21:33:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052538788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:33:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299311292] [2024-06-21 21:33:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:41,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:33:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:33:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:33:41,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:33:41,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 674 transitions, 11514 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:41,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:41,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:33:41,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:44,800 INFO L124 PetriNetUnfolderBase]: 5026/7839 cut-off events. [2024-06-21 21:33:44,800 INFO L125 PetriNetUnfolderBase]: For 1245918/1245918 co-relation queries the response was YES. [2024-06-21 21:33:44,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87887 conditions, 7839 events. 5026/7839 cut-off events. For 1245918/1245918 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 48173 event pairs, 1007 based on Foata normal form. 2/7838 useless extension candidates. Maximal degree in co-relation 87661. Up to 7491 conditions per place. [2024-06-21 21:33:44,941 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 649 selfloop transitions, 47 changer transitions 0/700 dead transitions. [2024-06-21 21:33:44,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 700 transitions, 13148 flow [2024-06-21 21:33:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:33:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:33:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-21 21:33:44,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-21 21:33:44,942 INFO L175 Difference]: Start difference. First operand has 485 places, 674 transitions, 11514 flow. Second operand 9 states and 152 transitions. [2024-06-21 21:33:44,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 700 transitions, 13148 flow [2024-06-21 21:33:52,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 700 transitions, 12991 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 21:33:52,354 INFO L231 Difference]: Finished difference. Result has 488 places, 678 transitions, 11613 flow [2024-06-21 21:33:52,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11357, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11613, PETRI_PLACES=488, PETRI_TRANSITIONS=678} [2024-06-21 21:33:52,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-21 21:33:52,355 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 678 transitions, 11613 flow [2024-06-21 21:33:52,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:52,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:52,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:52,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 21:33:52,355 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:52,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1488366998, now seen corresponding path program 3 times [2024-06-21 21:33:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173619594] [2024-06-21 21:33:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173619594] [2024-06-21 21:33:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173619594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:53,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:33:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548271852] [2024-06-21 21:33:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:33:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:33:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:33:53,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:33:53,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 678 transitions, 11613 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:53,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:53,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:33:53,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:56,728 INFO L124 PetriNetUnfolderBase]: 5062/7895 cut-off events. [2024-06-21 21:33:56,728 INFO L125 PetriNetUnfolderBase]: For 1319767/1319767 co-relation queries the response was YES. [2024-06-21 21:33:56,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88926 conditions, 7895 events. 5062/7895 cut-off events. For 1319767/1319767 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 48610 event pairs, 1015 based on Foata normal form. 10/7902 useless extension candidates. Maximal degree in co-relation 88698. Up to 7513 conditions per place. [2024-06-21 21:33:57,043 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 658 selfloop transitions, 45 changer transitions 0/707 dead transitions. [2024-06-21 21:33:57,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 707 transitions, 13313 flow [2024-06-21 21:33:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:33:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:33:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-21 21:33:57,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:33:57,045 INFO L175 Difference]: Start difference. First operand has 488 places, 678 transitions, 11613 flow. Second operand 10 states and 170 transitions. [2024-06-21 21:33:57,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 707 transitions, 13313 flow [2024-06-21 21:34:04,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 707 transitions, 13136 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:04,190 INFO L231 Difference]: Finished difference. Result has 493 places, 679 transitions, 11589 flow [2024-06-21 21:34:04,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11436, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11589, PETRI_PLACES=493, PETRI_TRANSITIONS=679} [2024-06-21 21:34:04,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-21 21:34:04,191 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 679 transitions, 11589 flow [2024-06-21 21:34:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:04,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:04,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:04,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 21:34:04,192 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:04,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1660440182, now seen corresponding path program 3 times [2024-06-21 21:34:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542334973] [2024-06-21 21:34:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542334973] [2024-06-21 21:34:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542334973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:05,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:34:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401094004] [2024-06-21 21:34:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:34:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:34:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:34:05,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:34:05,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 679 transitions, 11589 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:05,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:05,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:34:05,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:08,456 INFO L124 PetriNetUnfolderBase]: 5070/7907 cut-off events. [2024-06-21 21:34:08,456 INFO L125 PetriNetUnfolderBase]: For 1289017/1289017 co-relation queries the response was YES. [2024-06-21 21:34:08,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89210 conditions, 7907 events. 5070/7907 cut-off events. For 1289017/1289017 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 48649 event pairs, 1039 based on Foata normal form. 2/7906 useless extension candidates. Maximal degree in co-relation 88980. Up to 7633 conditions per place. [2024-06-21 21:34:08,594 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 671 selfloop transitions, 25 changer transitions 0/700 dead transitions. [2024-06-21 21:34:08,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 700 transitions, 13171 flow [2024-06-21 21:34:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-21 21:34:08,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-21 21:34:08,595 INFO L175 Difference]: Start difference. First operand has 493 places, 679 transitions, 11589 flow. Second operand 9 states and 146 transitions. [2024-06-21 21:34:08,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 700 transitions, 13171 flow [2024-06-21 21:34:17,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 700 transitions, 13074 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 21:34:17,336 INFO L231 Difference]: Finished difference. Result has 495 places, 681 transitions, 11641 flow [2024-06-21 21:34:17,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11492, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11641, PETRI_PLACES=495, PETRI_TRANSITIONS=681} [2024-06-21 21:34:17,337 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-21 21:34:17,337 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 681 transitions, 11641 flow [2024-06-21 21:34:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:17,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:17,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:17,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 21:34:17,338 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:17,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash -601603120, now seen corresponding path program 4 times [2024-06-21 21:34:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:17,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944860758] [2024-06-21 21:34:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:17,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:18,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944860758] [2024-06-21 21:34:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944860758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:34:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218442958] [2024-06-21 21:34:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:34:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:34:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:34:18,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:34:18,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 681 transitions, 11641 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:18,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:18,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:34:18,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:21,635 INFO L124 PetriNetUnfolderBase]: 5078/7919 cut-off events. [2024-06-21 21:34:21,635 INFO L125 PetriNetUnfolderBase]: For 1303848/1303848 co-relation queries the response was YES. [2024-06-21 21:34:21,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89342 conditions, 7919 events. 5078/7919 cut-off events. For 1303848/1303848 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 48812 event pairs, 1039 based on Foata normal form. 2/7918 useless extension candidates. Maximal degree in co-relation 89111. Up to 7631 conditions per place. [2024-06-21 21:34:21,777 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 670 selfloop transitions, 28 changer transitions 0/702 dead transitions. [2024-06-21 21:34:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 702 transitions, 13219 flow [2024-06-21 21:34:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-21 21:34:21,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-21 21:34:21,778 INFO L175 Difference]: Start difference. First operand has 495 places, 681 transitions, 11641 flow. Second operand 9 states and 147 transitions. [2024-06-21 21:34:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 702 transitions, 13219 flow [2024-06-21 21:34:29,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 702 transitions, 13098 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:29,642 INFO L231 Difference]: Finished difference. Result has 500 places, 683 transitions, 11679 flow [2024-06-21 21:34:29,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11520, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11679, PETRI_PLACES=500, PETRI_TRANSITIONS=683} [2024-06-21 21:34:29,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-21 21:34:29,643 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 683 transitions, 11679 flow [2024-06-21 21:34:29,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:29,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:29,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:29,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 21:34:29,643 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:29,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -608043680, now seen corresponding path program 4 times [2024-06-21 21:34:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750526601] [2024-06-21 21:34:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:30,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750526601] [2024-06-21 21:34:30,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750526601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:30,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:30,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:34:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833134083] [2024-06-21 21:34:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:30,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:34:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:30,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:34:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:34:31,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:34:31,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 683 transitions, 11679 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:31,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:31,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:34:31,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:34,016 INFO L124 PetriNetUnfolderBase]: 5114/7975 cut-off events. [2024-06-21 21:34:34,017 INFO L125 PetriNetUnfolderBase]: For 1383655/1383655 co-relation queries the response was YES. [2024-06-21 21:34:34,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90386 conditions, 7975 events. 5114/7975 cut-off events. For 1383655/1383655 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 49173 event pairs, 1046 based on Foata normal form. 10/7982 useless extension candidates. Maximal degree in co-relation 90154. Up to 7647 conditions per place. [2024-06-21 21:34:34,178 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 677 selfloop transitions, 28 changer transitions 0/709 dead transitions. [2024-06-21 21:34:34,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 709 transitions, 13377 flow [2024-06-21 21:34:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:34:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:34:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-21 21:34:34,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-21 21:34:34,179 INFO L175 Difference]: Start difference. First operand has 500 places, 683 transitions, 11679 flow. Second operand 10 states and 164 transitions. [2024-06-21 21:34:34,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 709 transitions, 13377 flow [2024-06-21 21:34:43,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 709 transitions, 13230 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-21 21:34:43,264 INFO L231 Difference]: Finished difference. Result has 502 places, 684 transitions, 11657 flow [2024-06-21 21:34:43,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11532, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11657, PETRI_PLACES=502, PETRI_TRANSITIONS=684} [2024-06-21 21:34:43,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-21 21:34:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 684 transitions, 11657 flow [2024-06-21 21:34:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:43,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:43,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 21:34:43,265 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -601372480, now seen corresponding path program 5 times [2024-06-21 21:34:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308209589] [2024-06-21 21:34:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308209589] [2024-06-21 21:34:44,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308209589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:44,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:44,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916214163] [2024-06-21 21:34:44,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:44,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:34:44,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 684 transitions, 11657 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:44,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:44,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:34:44,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:47,562 INFO L124 PetriNetUnfolderBase]: 5122/7987 cut-off events. [2024-06-21 21:34:47,562 INFO L125 PetriNetUnfolderBase]: For 1349556/1349556 co-relation queries the response was YES. [2024-06-21 21:34:47,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90643 conditions, 7987 events. 5122/7987 cut-off events. For 1349556/1349556 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 49280 event pairs, 1039 based on Foata normal form. 2/7986 useless extension candidates. Maximal degree in co-relation 90410. Up to 7713 conditions per place. [2024-06-21 21:34:47,706 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 678 selfloop transitions, 23 changer transitions 0/705 dead transitions. [2024-06-21 21:34:47,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 705 transitions, 13235 flow [2024-06-21 21:34:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-21 21:34:47,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 21:34:47,707 INFO L175 Difference]: Start difference. First operand has 502 places, 684 transitions, 11657 flow. Second operand 9 states and 144 transitions. [2024-06-21 21:34:47,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 705 transitions, 13235 flow [2024-06-21 21:34:57,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 705 transitions, 13142 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 21:34:57,069 INFO L231 Difference]: Finished difference. Result has 503 places, 686 transitions, 11719 flow [2024-06-21 21:34:57,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11564, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11719, PETRI_PLACES=503, PETRI_TRANSITIONS=686} [2024-06-21 21:34:57,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-21 21:34:57,070 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 686 transitions, 11719 flow [2024-06-21 21:34:57,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:57,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:57,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:57,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 21:34:57,071 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:57,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1167916604, now seen corresponding path program 6 times [2024-06-21 21:34:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007606024] [2024-06-21 21:34:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:58,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007606024] [2024-06-21 21:34:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007606024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:58,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:58,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:34:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675224939] [2024-06-21 21:34:58,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:34:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:34:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:34:58,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:34:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 686 transitions, 11719 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:34:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:01,230 INFO L124 PetriNetUnfolderBase]: 5130/7995 cut-off events. [2024-06-21 21:35:01,231 INFO L125 PetriNetUnfolderBase]: For 1364185/1364185 co-relation queries the response was YES. [2024-06-21 21:35:01,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90767 conditions, 7995 events. 5130/7995 cut-off events. For 1364185/1364185 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 49315 event pairs, 1122 based on Foata normal form. 2/7994 useless extension candidates. Maximal degree in co-relation 90533. Up to 7740 conditions per place. [2024-06-21 21:35:01,378 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 679 selfloop transitions, 20 changer transitions 0/703 dead transitions. [2024-06-21 21:35:01,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 703 transitions, 13295 flow [2024-06-21 21:35:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-21 21:35:01,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 21:35:01,379 INFO L175 Difference]: Start difference. First operand has 503 places, 686 transitions, 11719 flow. Second operand 9 states and 140 transitions. [2024-06-21 21:35:01,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 703 transitions, 13295 flow [2024-06-21 21:35:08,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 703 transitions, 13156 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-21 21:35:08,942 INFO L231 Difference]: Finished difference. Result has 505 places, 688 transitions, 11733 flow [2024-06-21 21:35:08,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11580, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11733, PETRI_PLACES=505, PETRI_TRANSITIONS=688} [2024-06-21 21:35:08,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-21 21:35:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 688 transitions, 11733 flow [2024-06-21 21:35:08,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:08,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:08,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 21:35:08,943 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:08,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1122892752, now seen corresponding path program 7 times [2024-06-21 21:35:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:08,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961137546] [2024-06-21 21:35:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:08,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961137546] [2024-06-21 21:35:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961137546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:10,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:35:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419047972] [2024-06-21 21:35:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:10,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:35:10,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:35:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:35:10,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:35:10,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 688 transitions, 11733 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:10,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:10,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:35:10,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:13,075 INFO L124 PetriNetUnfolderBase]: 5146/8021 cut-off events. [2024-06-21 21:35:13,075 INFO L125 PetriNetUnfolderBase]: For 1382906/1382906 co-relation queries the response was YES. [2024-06-21 21:35:13,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91121 conditions, 8021 events. 5146/8021 cut-off events. For 1382906/1382906 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 49556 event pairs, 1117 based on Foata normal form. 2/8020 useless extension candidates. Maximal degree in co-relation 90886. Up to 7750 conditions per place. [2024-06-21 21:35:13,224 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 680 selfloop transitions, 23 changer transitions 0/707 dead transitions. [2024-06-21 21:35:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 707 transitions, 13317 flow [2024-06-21 21:35:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-21 21:35:13,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-21 21:35:13,225 INFO L175 Difference]: Start difference. First operand has 505 places, 688 transitions, 11733 flow. Second operand 9 states and 141 transitions. [2024-06-21 21:35:13,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 707 transitions, 13317 flow [2024-06-21 21:35:22,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 707 transitions, 13188 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-21 21:35:22,571 INFO L231 Difference]: Finished difference. Result has 510 places, 692 transitions, 11785 flow [2024-06-21 21:35:22,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11604, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11785, PETRI_PLACES=510, PETRI_TRANSITIONS=692} [2024-06-21 21:35:22,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-21 21:35:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 692 transitions, 11785 flow [2024-06-21 21:35:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:22,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:22,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:22,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 21:35:22,573 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:22,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 769804480, now seen corresponding path program 8 times [2024-06-21 21:35:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703765646] [2024-06-21 21:35:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703765646] [2024-06-21 21:35:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703765646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:23,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:23,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:35:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283867467] [2024-06-21 21:35:23,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:35:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:35:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:35:23,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-21 21:35:23,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 692 transitions, 11785 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:23,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:23,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-21 21:35:23,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:26,670 INFO L124 PetriNetUnfolderBase]: 5154/8035 cut-off events. [2024-06-21 21:35:26,670 INFO L125 PetriNetUnfolderBase]: For 1403782/1403782 co-relation queries the response was YES. [2024-06-21 21:35:26,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91500 conditions, 8035 events. 5154/8035 cut-off events. For 1403782/1403782 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 49602 event pairs, 1103 based on Foata normal form. 2/8034 useless extension candidates. Maximal degree in co-relation 91263. Up to 7771 conditions per place. [2024-06-21 21:35:26,822 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 686 selfloop transitions, 19 changer transitions 0/709 dead transitions. [2024-06-21 21:35:26,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 709 transitions, 13345 flow [2024-06-21 21:35:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-21 21:35:26,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-21 21:35:26,823 INFO L175 Difference]: Start difference. First operand has 510 places, 692 transitions, 11785 flow. Second operand 9 states and 138 transitions. [2024-06-21 21:35:26,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 709 transitions, 13345 flow [2024-06-21 21:35:35,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 709 transitions, 13208 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-21 21:35:35,962 INFO L231 Difference]: Finished difference. Result has 514 places, 694 transitions, 11807 flow [2024-06-21 21:35:35,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11648, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11807, PETRI_PLACES=514, PETRI_TRANSITIONS=694} [2024-06-21 21:35:35,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-21 21:35:35,962 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 694 transitions, 11807 flow [2024-06-21 21:35:35,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:35,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:35,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:35,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 21:35:35,963 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:35,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash 484704610, now seen corresponding path program 9 times [2024-06-21 21:35:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746089014] [2024-06-21 21:35:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat