./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.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/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:52:38,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:52:38,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:52:38,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:52:38,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:52:38,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:52:38,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:52:38,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:52:38,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:52:38,197 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:52:38,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:52:38,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:52:38,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:52:38,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:52:38,200 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:52:38,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:52:38,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:52:38,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:52:38,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:52:38,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:52:38,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:52:38,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:52:38,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:52:38,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:52:38,203 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:52:38,203 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:52:38,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:52:38,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:52:38,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:52:38,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:52:38,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:52:38,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:52:38,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:52:38,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:52:38,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:52:38,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:52:38,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:52:38,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:52:38,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:52:38,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:52:38,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:52:38,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:52:38,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:52:38,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:52:38,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:52:38,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:52:38,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:52:38,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:52:38,506 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:52:38,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:52:39,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:52:40,008 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:52:40,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:52:40,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9937bc6f7/cd1d77e74b624e17bce9827a2eed9a19/FLAG7413ac555 [2024-06-28 03:52:40,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9937bc6f7/cd1d77e74b624e17bce9827a2eed9a19 [2024-06-28 03:52:40,040 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:52:40,040 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:52:40,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:52:40,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:52:40,240 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:52:40,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:52:40,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:52:40,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:52:40,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:52:40" (1/2) ... [2024-06-28 03:52:40,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c23b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:52:40, skipping insertion in model container [2024-06-28 03:52:40,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:52:40" (1/2) ... [2024-06-28 03:52:40,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fbf16ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:52:40, skipping insertion in model container [2024-06-28 03:52:40,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:52:40" (2/2) ... [2024-06-28 03:52:40,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c23b3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:40, skipping insertion in model container [2024-06-28 03:52:40,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:52:40" (2/2) ... [2024-06-28 03:52:40,251 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:52:40,349 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:52:40,351 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:52:40,351 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:52:40,351 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:52:40,352 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:52:40,352 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 03:52:40,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:52:40,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:52:40,814 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:52:41,050 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:52:41,096 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:52:41,097 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41 WrapperNode [2024-06-28 03:52:41,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:52:41,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:52:41,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:52:41,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:52:41,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,157 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2024-06-28 03:52:41,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:52:41,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:52:41,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:52:41,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:52:41,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,215 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:52:41,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:52:41,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:52:41,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:52:41,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:52:41,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (1/1) ... [2024-06-28 03:52:41,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:52:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:52:41,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:52:41,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:52:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:52:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:52:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:52:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:52:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:52:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:52:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:52:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:52:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:52:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:52:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:52:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:52:41,337 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:52:41,487 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:52:41,489 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:52:41,898 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:52:41,898 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:52:42,059 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:52:42,060 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:52:42,061 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:52:42 BoogieIcfgContainer [2024-06-28 03:52:42,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:52:42,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:52:42,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:52:42,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:52:42,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:52:40" (1/4) ... [2024-06-28 03:52:42,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96238a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:52:42, skipping insertion in model container [2024-06-28 03:52:42,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:52:40" (2/4) ... [2024-06-28 03:52:42,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96238a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:52:42, skipping insertion in model container [2024-06-28 03:52:42,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:52:41" (3/4) ... [2024-06-28 03:52:42,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96238a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:52:42, skipping insertion in model container [2024-06-28 03:52:42,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:52:42" (4/4) ... [2024-06-28 03:52:42,071 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:52:42,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:52:42,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:52:42,084 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:52:42,137 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:52:42,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:52:42,210 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 03:52:42,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:52:42,212 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 61 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. [2024-06-28 03:52:42,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:52:42,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 03:52:42,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:52:42,240 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;@2ec0a888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:52:42,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:52:42,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:52:42,247 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:52:42,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:52:42,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:42,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:52:42,249 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)] === [2024-06-28 03:52:42,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 441899971, now seen corresponding path program 1 times [2024-06-28 03:52:42,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158351823] [2024-06-28 03:52:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158351823] [2024-06-28 03:52:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158351823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:43,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:52:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235239579] [2024-06-28 03:52:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:43,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:52:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:52:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:52:43,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:52:43,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:43,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:43,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:52:43,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:43,834 INFO L124 PetriNetUnfolderBase]: 1354/2038 cut-off events. [2024-06-28 03:52:43,834 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 03:52:43,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 2038 events. 1354/2038 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9585 event pairs, 709 based on Foata normal form. 4/2007 useless extension candidates. Maximal degree in co-relation 4138. Up to 2016 conditions per place. [2024-06-28 03:52:43,854 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 35 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 03:52:43,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 181 flow [2024-06-28 03:52:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:52:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:52:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 03:52:43,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 03:52:43,868 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 72 transitions. [2024-06-28 03:52:43,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 181 flow [2024-06-28 03:52:43,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:52:43,874 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 03:52:43,875 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} [2024-06-28 03:52:43,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 03:52:43,879 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 03:52:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:43,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:43,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:52:43,880 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)] === [2024-06-28 03:52:43,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -535779076, now seen corresponding path program 1 times [2024-06-28 03:52:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606921924] [2024-06-28 03:52:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:44,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:44,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606921924] [2024-06-28 03:52:44,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606921924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:44,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:44,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:52:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052671433] [2024-06-28 03:52:44,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:52:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:52:44,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:52:44,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:52:44,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:44,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:44,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:52:44,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:45,080 INFO L124 PetriNetUnfolderBase]: 1363/2050 cut-off events. [2024-06-28 03:52:45,082 INFO L125 PetriNetUnfolderBase]: For 316/319 co-relation queries the response was YES. [2024-06-28 03:52:45,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 2050 events. 1363/2050 cut-off events. For 316/319 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9433 event pairs, 772 based on Foata normal form. 8/2057 useless extension candidates. Maximal degree in co-relation 4726. Up to 2013 conditions per place. [2024-06-28 03:52:45,096 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 45 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 03:52:45,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 266 flow [2024-06-28 03:52:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:52:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:52:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 03:52:45,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 03:52:45,099 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 92 transitions. [2024-06-28 03:52:45,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 266 flow [2024-06-28 03:52:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:52:45,101 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 154 flow [2024-06-28 03:52:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 03:52:45,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 03:52:45,103 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 154 flow [2024-06-28 03:52:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:45,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:45,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:52:45,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:52:45,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash 570718658, now seen corresponding path program 1 times [2024-06-28 03:52:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293462567] [2024-06-28 03:52:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293462567] [2024-06-28 03:52:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293462567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:52:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808367838] [2024-06-28 03:52:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:52:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:52:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:52:45,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:45,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:45,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:45,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:45,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:46,324 INFO L124 PetriNetUnfolderBase]: 1664/2484 cut-off events. [2024-06-28 03:52:46,324 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-06-28 03:52:46,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 2484 events. 1664/2484 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11396 event pairs, 791 based on Foata normal form. 6/2490 useless extension candidates. Maximal degree in co-relation 6461. Up to 2418 conditions per place. [2024-06-28 03:52:46,341 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 62 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-28 03:52:46,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 407 flow [2024-06-28 03:52:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:52:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:52:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 03:52:46,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-28 03:52:46,345 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 154 flow. Second operand 5 states and 111 transitions. [2024-06-28 03:52:46,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 407 flow [2024-06-28 03:52:46,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 392 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 03:52:46,349 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 230 flow [2024-06-28 03:52:46,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-06-28 03:52:46,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 03:52:46,350 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 230 flow [2024-06-28 03:52:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:46,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:46,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:52:46,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:52:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash 429293185, now seen corresponding path program 1 times [2024-06-28 03:52:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505633951] [2024-06-28 03:52:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:47,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505633951] [2024-06-28 03:52:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505633951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:52:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852388681] [2024-06-28 03:52:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:52:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:52:47,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:52:47,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:47,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:47,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:47,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:47,916 INFO L124 PetriNetUnfolderBase]: 1658/2475 cut-off events. [2024-06-28 03:52:47,917 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2024-06-28 03:52:47,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7118 conditions, 2475 events. 1658/2475 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11209 event pairs, 722 based on Foata normal form. 3/2478 useless extension candidates. Maximal degree in co-relation 7099. Up to 2418 conditions per place. [2024-06-28 03:52:47,932 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 69 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-28 03:52:47,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 86 transitions, 507 flow [2024-06-28 03:52:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:52:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:52:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 03:52:47,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 03:52:47,937 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 230 flow. Second operand 6 states and 124 transitions. [2024-06-28 03:52:47,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 86 transitions, 507 flow [2024-06-28 03:52:47,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 503 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 03:52:47,944 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 325 flow [2024-06-28 03:52:47,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-06-28 03:52:47,945 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-28 03:52:47,945 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 325 flow [2024-06-28 03:52:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:47,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:47,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:52:47,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:52:47,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1295155967, now seen corresponding path program 1 times [2024-06-28 03:52:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512993778] [2024-06-28 03:52:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512993778] [2024-06-28 03:52:49,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512993778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:49,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:49,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:52:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495060102] [2024-06-28 03:52:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:52:49,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:52:49,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:52:49,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:49,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:49,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:49,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:49,692 INFO L124 PetriNetUnfolderBase]: 1649/2460 cut-off events. [2024-06-28 03:52:49,693 INFO L125 PetriNetUnfolderBase]: For 3519/3519 co-relation queries the response was YES. [2024-06-28 03:52:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7736 conditions, 2460 events. 1649/2460 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11068 event pairs, 558 based on Foata normal form. 6/2466 useless extension candidates. Maximal degree in co-relation 7712. Up to 2373 conditions per place. [2024-06-28 03:52:49,712 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 73 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-28 03:52:49,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 587 flow [2024-06-28 03:52:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:52:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:52:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:52:49,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2024-06-28 03:52:49,715 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 325 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:52:49,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 587 flow [2024-06-28 03:52:49,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 575 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 03:52:49,725 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 356 flow [2024-06-28 03:52:49,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 03:52:49,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-28 03:52:49,728 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 356 flow [2024-06-28 03:52:49,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:49,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:49,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:49,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:52:49,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:52:49,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 494709971, now seen corresponding path program 1 times [2024-06-28 03:52:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:49,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741987886] [2024-06-28 03:52:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741987886] [2024-06-28 03:52:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741987886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:50,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:52:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879057354] [2024-06-28 03:52:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:52:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:52:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:52:50,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:50,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:50,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:50,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:51,007 INFO L124 PetriNetUnfolderBase]: 1639/2447 cut-off events. [2024-06-28 03:52:51,008 INFO L125 PetriNetUnfolderBase]: For 4699/4701 co-relation queries the response was YES. [2024-06-28 03:52:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8162 conditions, 2447 events. 1639/2447 cut-off events. For 4699/4701 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11027 event pairs, 651 based on Foata normal form. 6/2453 useless extension candidates. Maximal degree in co-relation 8135. Up to 2407 conditions per place. [2024-06-28 03:52:51,029 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 61 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-06-28 03:52:51,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 542 flow [2024-06-28 03:52:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:52:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:52:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-28 03:52:51,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-06-28 03:52:51,031 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 356 flow. Second operand 5 states and 83 transitions. [2024-06-28 03:52:51,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 542 flow [2024-06-28 03:52:51,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 507 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:52:51,039 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 369 flow [2024-06-28 03:52:51,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-28 03:52:51,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-28 03:52:51,041 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 369 flow [2024-06-28 03:52:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:51,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:51,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:51,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:52:51,042 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)] === [2024-06-28 03:52:51,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1174386298, now seen corresponding path program 1 times [2024-06-28 03:52:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798588493] [2024-06-28 03:52:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:51,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798588493] [2024-06-28 03:52:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798588493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338701720] [2024-06-28 03:52:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:52,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:52,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:52,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:52,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:52,617 INFO L124 PetriNetUnfolderBase]: 1689/2517 cut-off events. [2024-06-28 03:52:52,617 INFO L125 PetriNetUnfolderBase]: For 6225/6229 co-relation queries the response was YES. [2024-06-28 03:52:52,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 2517 events. 1689/2517 cut-off events. For 6225/6229 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11471 event pairs, 628 based on Foata normal form. 9/2526 useless extension candidates. Maximal degree in co-relation 8861. Up to 2356 conditions per place. [2024-06-28 03:52:52,643 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 77 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-28 03:52:52,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 741 flow [2024-06-28 03:52:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:52:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:52:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:52:52,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 03:52:52,646 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 369 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:52:52,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 741 flow [2024-06-28 03:52:52,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 717 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:52:52,656 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 444 flow [2024-06-28 03:52:52,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 03:52:52,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-28 03:52:52,657 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 444 flow [2024-06-28 03:52:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:52,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:52,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:52:52,658 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)] === [2024-06-28 03:52:52,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1502417574, now seen corresponding path program 2 times [2024-06-28 03:52:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512536206] [2024-06-28 03:52:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:53,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512536206] [2024-06-28 03:52:53,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512536206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096267848] [2024-06-28 03:52:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:53,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:53,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:53,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:53,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:53,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:54,337 INFO L124 PetriNetUnfolderBase]: 1741/2591 cut-off events. [2024-06-28 03:52:54,337 INFO L125 PetriNetUnfolderBase]: For 8531/8535 co-relation queries the response was YES. [2024-06-28 03:52:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9848 conditions, 2591 events. 1741/2591 cut-off events. For 8531/8535 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11811 event pairs, 646 based on Foata normal form. 9/2600 useless extension candidates. Maximal degree in co-relation 9818. Up to 2479 conditions per place. [2024-06-28 03:52:54,356 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 81 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-28 03:52:54,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 792 flow [2024-06-28 03:52:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:52:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:52:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:52:54,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 03:52:54,361 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 444 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:52:54,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 792 flow [2024-06-28 03:52:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 761 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:52:54,372 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 515 flow [2024-06-28 03:52:54,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-28 03:52:54,375 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 03:52:54,375 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 515 flow [2024-06-28 03:52:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:54,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:54,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:54,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:52:54,376 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)] === [2024-06-28 03:52:54,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1502417388, now seen corresponding path program 1 times [2024-06-28 03:52:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:54,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880003101] [2024-06-28 03:52:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:55,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:55,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880003101] [2024-06-28 03:52:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880003101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:55,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737292324] [2024-06-28 03:52:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:55,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:55,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:55,819 INFO L124 PetriNetUnfolderBase]: 1763/2624 cut-off events. [2024-06-28 03:52:55,820 INFO L125 PetriNetUnfolderBase]: For 10371/10371 co-relation queries the response was YES. [2024-06-28 03:52:55,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 2624 events. 1763/2624 cut-off events. For 10371/10371 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11928 event pairs, 616 based on Foata normal form. 4/2627 useless extension candidates. Maximal degree in co-relation 10275. Up to 2498 conditions per place. [2024-06-28 03:52:55,833 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 87 selfloop transitions, 22 changer transitions 0/112 dead transitions. [2024-06-28 03:52:55,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 910 flow [2024-06-28 03:52:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:52:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:52:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:52:55,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 03:52:55,835 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 515 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:52:55,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 910 flow [2024-06-28 03:52:55,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 851 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:52:55,847 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 608 flow [2024-06-28 03:52:55,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 03:52:55,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-28 03:52:55,848 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 608 flow [2024-06-28 03:52:55,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:55,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:55,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:52:55,849 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)] === [2024-06-28 03:52:55,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2105206030, now seen corresponding path program 2 times [2024-06-28 03:52:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935165276] [2024-06-28 03:52:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935165276] [2024-06-28 03:52:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935165276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906163564] [2024-06-28 03:52:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:56,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:56,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:56,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 608 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:56,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:56,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:56,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:57,114 INFO L124 PetriNetUnfolderBase]: 1785/2656 cut-off events. [2024-06-28 03:52:57,114 INFO L125 PetriNetUnfolderBase]: For 12814/12814 co-relation queries the response was YES. [2024-06-28 03:52:57,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11037 conditions, 2656 events. 1785/2656 cut-off events. For 12814/12814 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12027 event pairs, 614 based on Foata normal form. 4/2659 useless extension candidates. Maximal degree in co-relation 11002. Up to 2517 conditions per place. [2024-06-28 03:52:57,158 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 83 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-28 03:52:57,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 948 flow [2024-06-28 03:52:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:52:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:52:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:52:57,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 03:52:57,162 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 608 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:52:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 948 flow [2024-06-28 03:52:57,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 914 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:52:57,180 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 683 flow [2024-06-28 03:52:57,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=683, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-28 03:52:57,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 03:52:57,182 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 683 flow [2024-06-28 03:52:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:57,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:57,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:52:57,183 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)] === [2024-06-28 03:52:57,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2105206216, now seen corresponding path program 3 times [2024-06-28 03:52:57,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562310762] [2024-06-28 03:52:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562310762] [2024-06-28 03:52:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562310762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:57,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720621599] [2024-06-28 03:52:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:58,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:58,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 683 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:58,554 INFO L124 PetriNetUnfolderBase]: 1771/2636 cut-off events. [2024-06-28 03:52:58,554 INFO L125 PetriNetUnfolderBase]: For 14876/14878 co-relation queries the response was YES. [2024-06-28 03:52:58,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 2636 events. 1771/2636 cut-off events. For 14876/14878 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11957 event pairs, 640 based on Foata normal form. 7/2643 useless extension candidates. Maximal degree in co-relation 11286. Up to 2518 conditions per place. [2024-06-28 03:52:58,575 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 87 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2024-06-28 03:52:58,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 115 transitions, 995 flow [2024-06-28 03:52:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:52:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:52:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:52:58,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:52:58,577 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 683 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:52:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 115 transitions, 995 flow [2024-06-28 03:52:58,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 939 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:52:58,600 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 694 flow [2024-06-28 03:52:58,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-06-28 03:52:58,601 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-28 03:52:58,601 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 694 flow [2024-06-28 03:52:58,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:58,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:58,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:52:58,602 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)] === [2024-06-28 03:52:58,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash -224945392, now seen corresponding path program 3 times [2024-06-28 03:52:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:58,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685788905] [2024-06-28 03:52:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:58,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:59,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685788905] [2024-06-28 03:52:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685788905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:59,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:52:59,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460271288] [2024-06-28 03:52:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:52:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:52:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:52:59,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:52:59,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 694 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:59,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:59,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:52:59,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:59,878 INFO L124 PetriNetUnfolderBase]: 1777/2657 cut-off events. [2024-06-28 03:52:59,879 INFO L125 PetriNetUnfolderBase]: For 15728/15728 co-relation queries the response was YES. [2024-06-28 03:52:59,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11375 conditions, 2657 events. 1777/2657 cut-off events. For 15728/15728 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12182 event pairs, 895 based on Foata normal form. 4/2661 useless extension candidates. Maximal degree in co-relation 11337. Up to 2587 conditions per place. [2024-06-28 03:52:59,896 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 93 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2024-06-28 03:52:59,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1034 flow [2024-06-28 03:52:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:52:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:52:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 03:52:59,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 03:52:59,899 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 694 flow. Second operand 8 states and 119 transitions. [2024-06-28 03:52:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1034 flow [2024-06-28 03:52:59,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 971 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:52:59,919 INFO L231 Difference]: Finished difference. Result has 89 places, 96 transitions, 762 flow [2024-06-28 03:52:59,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=89, PETRI_TRANSITIONS=96} [2024-06-28 03:52:59,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-28 03:52:59,920 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 96 transitions, 762 flow [2024-06-28 03:52:59,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:59,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:59,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:59,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:52:59,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:52:59,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1248015924, now seen corresponding path program 1 times [2024-06-28 03:52:59,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014771489] [2024-06-28 03:52:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:00,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:00,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014771489] [2024-06-28 03:53:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014771489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:00,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463113796] [2024-06-28 03:53:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:00,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:00,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:00,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:00,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 96 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:00,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:00,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:00,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:01,499 INFO L124 PetriNetUnfolderBase]: 1769/2646 cut-off events. [2024-06-28 03:53:01,499 INFO L125 PetriNetUnfolderBase]: For 17592/17596 co-relation queries the response was YES. [2024-06-28 03:53:01,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11618 conditions, 2646 events. 1769/2646 cut-off events. For 17592/17596 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12136 event pairs, 880 based on Foata normal form. 8/2654 useless extension candidates. Maximal degree in co-relation 11577. Up to 2575 conditions per place. [2024-06-28 03:53:01,518 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 95 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-06-28 03:53:01,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 1038 flow [2024-06-28 03:53:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:53:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:53:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 03:53:01,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 03:53:01,521 INFO L175 Difference]: Start difference. First operand has 89 places, 96 transitions, 762 flow. Second operand 6 states and 97 transitions. [2024-06-28 03:53:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 1038 flow [2024-06-28 03:53:01,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 999 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:01,547 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 782 flow [2024-06-28 03:53:01,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=782, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-06-28 03:53:01,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 03:53:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 782 flow [2024-06-28 03:53:01,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:01,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:01,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:53:01,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:01,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1224558505, now seen corresponding path program 1 times [2024-06-28 03:53:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:01,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660094329] [2024-06-28 03:53:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:02,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660094329] [2024-06-28 03:53:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660094329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:02,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:02,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499437876] [2024-06-28 03:53:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:02,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:02,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:02,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:02,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:02,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:02,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:02,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:03,292 INFO L124 PetriNetUnfolderBase]: 2022/2998 cut-off events. [2024-06-28 03:53:03,293 INFO L125 PetriNetUnfolderBase]: For 21456/21470 co-relation queries the response was YES. [2024-06-28 03:53:03,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13475 conditions, 2998 events. 2022/2998 cut-off events. For 21456/21470 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13900 event pairs, 598 based on Foata normal form. 19/3017 useless extension candidates. Maximal degree in co-relation 13434. Up to 2658 conditions per place. [2024-06-28 03:53:03,314 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 132 selfloop transitions, 67 changer transitions 0/202 dead transitions. [2024-06-28 03:53:03,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 202 transitions, 1762 flow [2024-06-28 03:53:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:53:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:53:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:53:03,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:53:03,316 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 782 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:53:03,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 202 transitions, 1762 flow [2024-06-28 03:53:03,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 202 transitions, 1721 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:03,340 INFO L231 Difference]: Finished difference. Result has 102 places, 151 transitions, 1376 flow [2024-06-28 03:53:03,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1376, PETRI_PLACES=102, PETRI_TRANSITIONS=151} [2024-06-28 03:53:03,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-28 03:53:03,341 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 151 transitions, 1376 flow [2024-06-28 03:53:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:03,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:03,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:53:03,342 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:03,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 202853581, now seen corresponding path program 2 times [2024-06-28 03:53:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769832496] [2024-06-28 03:53:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:04,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769832496] [2024-06-28 03:53:04,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769832496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:04,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:04,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:04,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39428667] [2024-06-28 03:53:04,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:04,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:04,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 151 transitions, 1376 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:04,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:04,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:04,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:05,068 INFO L124 PetriNetUnfolderBase]: 2363/3512 cut-off events. [2024-06-28 03:53:05,068 INFO L125 PetriNetUnfolderBase]: For 32816/32826 co-relation queries the response was YES. [2024-06-28 03:53:05,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19185 conditions, 3512 events. 2363/3512 cut-off events. For 32816/32826 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16677 event pairs, 761 based on Foata normal form. 10/3522 useless extension candidates. Maximal degree in co-relation 19138. Up to 2965 conditions per place. [2024-06-28 03:53:05,089 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 181 selfloop transitions, 97 changer transitions 0/281 dead transitions. [2024-06-28 03:53:05,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 281 transitions, 3160 flow [2024-06-28 03:53:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:53:05,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:53:05,091 INFO L175 Difference]: Start difference. First operand has 102 places, 151 transitions, 1376 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:53:05,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 281 transitions, 3160 flow [2024-06-28 03:53:05,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 281 transitions, 3064 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 03:53:05,153 INFO L231 Difference]: Finished difference. Result has 113 places, 222 transitions, 2375 flow [2024-06-28 03:53:05,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2375, PETRI_PLACES=113, PETRI_TRANSITIONS=222} [2024-06-28 03:53:05,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-28 03:53:05,154 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 222 transitions, 2375 flow [2024-06-28 03:53:05,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:05,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:05,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:05,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:53:05,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:05,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1350875793, now seen corresponding path program 3 times [2024-06-28 03:53:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047782380] [2024-06-28 03:53:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:05,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047782380] [2024-06-28 03:53:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047782380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:06,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:06,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338966643] [2024-06-28 03:53:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:06,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:06,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:06,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:06,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 222 transitions, 2375 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:06,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:06,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:06,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:07,237 INFO L124 PetriNetUnfolderBase]: 2491/3691 cut-off events. [2024-06-28 03:53:07,237 INFO L125 PetriNetUnfolderBase]: For 41759/41773 co-relation queries the response was YES. [2024-06-28 03:53:07,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22164 conditions, 3691 events. 2491/3691 cut-off events. For 41759/41773 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17704 event pairs, 726 based on Foata normal form. 16/3707 useless extension candidates. Maximal degree in co-relation 22111. Up to 3070 conditions per place. [2024-06-28 03:53:07,261 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 174 selfloop transitions, 138 changer transitions 0/315 dead transitions. [2024-06-28 03:53:07,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 315 transitions, 3890 flow [2024-06-28 03:53:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:53:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:53:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 03:53:07,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:53:07,263 INFO L175 Difference]: Start difference. First operand has 113 places, 222 transitions, 2375 flow. Second operand 11 states and 209 transitions. [2024-06-28 03:53:07,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 315 transitions, 3890 flow [2024-06-28 03:53:07,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 315 transitions, 3753 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-28 03:53:07,324 INFO L231 Difference]: Finished difference. Result has 124 places, 252 transitions, 3046 flow [2024-06-28 03:53:07,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3046, PETRI_PLACES=124, PETRI_TRANSITIONS=252} [2024-06-28 03:53:07,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 03:53:07,325 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 252 transitions, 3046 flow [2024-06-28 03:53:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:07,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:07,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:53:07,325 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:07,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -753561710, now seen corresponding path program 1 times [2024-06-28 03:53:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80300684] [2024-06-28 03:53:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80300684] [2024-06-28 03:53:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80300684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17740658] [2024-06-28 03:53:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:08,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:08,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 252 transitions, 3046 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:08,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:08,952 INFO L124 PetriNetUnfolderBase]: 2659/3932 cut-off events. [2024-06-28 03:53:08,952 INFO L125 PetriNetUnfolderBase]: For 53331/53339 co-relation queries the response was YES. [2024-06-28 03:53:08,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25397 conditions, 3932 events. 2659/3932 cut-off events. For 53331/53339 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18968 event pairs, 757 based on Foata normal form. 16/3948 useless extension candidates. Maximal degree in co-relation 25340. Up to 3002 conditions per place. [2024-06-28 03:53:08,983 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 185 selfloop transitions, 150 changer transitions 0/338 dead transitions. [2024-06-28 03:53:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 338 transitions, 4618 flow [2024-06-28 03:53:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:53:08,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 03:53:08,986 INFO L175 Difference]: Start difference. First operand has 124 places, 252 transitions, 3046 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:53:08,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 338 transitions, 4618 flow [2024-06-28 03:53:09,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 338 transitions, 4467 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:53:09,058 INFO L231 Difference]: Finished difference. Result has 130 places, 287 transitions, 3804 flow [2024-06-28 03:53:09,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3804, PETRI_PLACES=130, PETRI_TRANSITIONS=287} [2024-06-28 03:53:09,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-28 03:53:09,058 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 287 transitions, 3804 flow [2024-06-28 03:53:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:09,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:09,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:53:09,059 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)] === [2024-06-28 03:53:09,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 202943791, now seen corresponding path program 4 times [2024-06-28 03:53:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119729687] [2024-06-28 03:53:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119729687] [2024-06-28 03:53:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119729687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:10,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385152899] [2024-06-28 03:53:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:10,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:10,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 287 transitions, 3804 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:10,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:10,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:11,267 INFO L124 PetriNetUnfolderBase]: 2894/4265 cut-off events. [2024-06-28 03:53:11,268 INFO L125 PetriNetUnfolderBase]: For 61419/61429 co-relation queries the response was YES. [2024-06-28 03:53:11,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29109 conditions, 4265 events. 2894/4265 cut-off events. For 61419/61429 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21050 event pairs, 780 based on Foata normal form. 20/4285 useless extension candidates. Maximal degree in co-relation 29047. Up to 3748 conditions per place. [2024-06-28 03:53:11,296 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 262 selfloop transitions, 129 changer transitions 0/394 dead transitions. [2024-06-28 03:53:11,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 394 transitions, 5644 flow [2024-06-28 03:53:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:53:11,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:53:11,298 INFO L175 Difference]: Start difference. First operand has 130 places, 287 transitions, 3804 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:53:11,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 394 transitions, 5644 flow [2024-06-28 03:53:11,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 394 transitions, 5479 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 03:53:11,392 INFO L231 Difference]: Finished difference. Result has 140 places, 349 transitions, 4847 flow [2024-06-28 03:53:11,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4847, PETRI_PLACES=140, PETRI_TRANSITIONS=349} [2024-06-28 03:53:11,393 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 03:53:11,393 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 349 transitions, 4847 flow [2024-06-28 03:53:11,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:11,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:11,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:53:11,394 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)] === [2024-06-28 03:53:11,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash 709290212, now seen corresponding path program 2 times [2024-06-28 03:53:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229750825] [2024-06-28 03:53:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:11,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229750825] [2024-06-28 03:53:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229750825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:12,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:12,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:12,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766271504] [2024-06-28 03:53:12,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:12,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:12,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 349 transitions, 4847 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:12,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:12,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:12,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:13,362 INFO L124 PetriNetUnfolderBase]: 3115/4587 cut-off events. [2024-06-28 03:53:13,362 INFO L125 PetriNetUnfolderBase]: For 71522/71541 co-relation queries the response was YES. [2024-06-28 03:53:13,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33076 conditions, 4587 events. 3115/4587 cut-off events. For 71522/71541 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22744 event pairs, 655 based on Foata normal form. 22/4609 useless extension candidates. Maximal degree in co-relation 33008. Up to 3486 conditions per place. [2024-06-28 03:53:13,396 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 247 selfloop transitions, 193 changer transitions 0/443 dead transitions. [2024-06-28 03:53:13,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 443 transitions, 6850 flow [2024-06-28 03:53:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:53:13,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 03:53:13,399 INFO L175 Difference]: Start difference. First operand has 140 places, 349 transitions, 4847 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:53:13,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 443 transitions, 6850 flow [2024-06-28 03:53:13,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 443 transitions, 6661 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:53:13,524 INFO L231 Difference]: Finished difference. Result has 149 places, 390 transitions, 5794 flow [2024-06-28 03:53:13,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5794, PETRI_PLACES=149, PETRI_TRANSITIONS=390} [2024-06-28 03:53:13,525 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-28 03:53:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 390 transitions, 5794 flow [2024-06-28 03:53:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:13,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:13,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:53:13,525 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)] === [2024-06-28 03:53:13,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1151341206, now seen corresponding path program 3 times [2024-06-28 03:53:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161655891] [2024-06-28 03:53:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:14,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161655891] [2024-06-28 03:53:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161655891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581869556] [2024-06-28 03:53:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:14,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:14,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:14,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 390 transitions, 5794 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:14,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:14,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:14,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:15,508 INFO L124 PetriNetUnfolderBase]: 3249/4781 cut-off events. [2024-06-28 03:53:15,508 INFO L125 PetriNetUnfolderBase]: For 84229/84233 co-relation queries the response was YES. [2024-06-28 03:53:15,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 4781 events. 3249/4781 cut-off events. For 84229/84233 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23884 event pairs, 914 based on Foata normal form. 8/4789 useless extension candidates. Maximal degree in co-relation 35935. Up to 4317 conditions per place. [2024-06-28 03:53:15,549 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 361 selfloop transitions, 106 changer transitions 0/470 dead transitions. [2024-06-28 03:53:15,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 470 transitions, 7712 flow [2024-06-28 03:53:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:53:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:53:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 03:53:15,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-28 03:53:15,551 INFO L175 Difference]: Start difference. First operand has 149 places, 390 transitions, 5794 flow. Second operand 11 states and 192 transitions. [2024-06-28 03:53:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 470 transitions, 7712 flow [2024-06-28 03:53:15,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 470 transitions, 7451 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 03:53:15,686 INFO L231 Difference]: Finished difference. Result has 161 places, 418 transitions, 6335 flow [2024-06-28 03:53:15,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6335, PETRI_PLACES=161, PETRI_TRANSITIONS=418} [2024-06-28 03:53:15,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-06-28 03:53:15,687 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 418 transitions, 6335 flow [2024-06-28 03:53:15,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:15,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:15,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:15,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:53:15,688 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)] === [2024-06-28 03:53:15,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1120948806, now seen corresponding path program 4 times [2024-06-28 03:53:15,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717320113] [2024-06-28 03:53:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717320113] [2024-06-28 03:53:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717320113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:16,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260901882] [2024-06-28 03:53:16,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:16,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:16,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 418 transitions, 6335 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:17,622 INFO L124 PetriNetUnfolderBase]: 3227/4753 cut-off events. [2024-06-28 03:53:17,622 INFO L125 PetriNetUnfolderBase]: For 90380/90384 co-relation queries the response was YES. [2024-06-28 03:53:17,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35841 conditions, 4753 events. 3227/4753 cut-off events. For 90380/90384 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23757 event pairs, 914 based on Foata normal form. 14/4767 useless extension candidates. Maximal degree in co-relation 35764. Up to 4310 conditions per place. [2024-06-28 03:53:17,656 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 352 selfloop transitions, 104 changer transitions 0/459 dead transitions. [2024-06-28 03:53:17,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 459 transitions, 7645 flow [2024-06-28 03:53:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:53:17,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:53:17,657 INFO L175 Difference]: Start difference. First operand has 161 places, 418 transitions, 6335 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:53:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 459 transitions, 7645 flow [2024-06-28 03:53:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 459 transitions, 7399 flow, removed 82 selfloop flow, removed 3 redundant places. [2024-06-28 03:53:17,791 INFO L231 Difference]: Finished difference. Result has 167 places, 418 transitions, 6317 flow [2024-06-28 03:53:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6089, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6317, PETRI_PLACES=167, PETRI_TRANSITIONS=418} [2024-06-28 03:53:17,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 03:53:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 418 transitions, 6317 flow [2024-06-28 03:53:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:53:17,792 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)] === [2024-06-28 03:53:17,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1120948651, now seen corresponding path program 5 times [2024-06-28 03:53:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290062326] [2024-06-28 03:53:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290062326] [2024-06-28 03:53:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290062326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:18,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642955993] [2024-06-28 03:53:18,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:18,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:18,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:18,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 418 transitions, 6317 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:18,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:18,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:18,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:19,949 INFO L124 PetriNetUnfolderBase]: 3266/4805 cut-off events. [2024-06-28 03:53:19,950 INFO L125 PetriNetUnfolderBase]: For 93484/93490 co-relation queries the response was YES. [2024-06-28 03:53:19,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36033 conditions, 4805 events. 3266/4805 cut-off events. For 93484/93490 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24128 event pairs, 928 based on Foata normal form. 16/4821 useless extension candidates. Maximal degree in co-relation 35955. Up to 4535 conditions per place. [2024-06-28 03:53:19,993 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 400 selfloop transitions, 70 changer transitions 0/473 dead transitions. [2024-06-28 03:53:19,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 473 transitions, 7730 flow [2024-06-28 03:53:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:53:19,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:53:19,994 INFO L175 Difference]: Start difference. First operand has 167 places, 418 transitions, 6317 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:53:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 473 transitions, 7730 flow [2024-06-28 03:53:20,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 473 transitions, 7522 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:53:20,128 INFO L231 Difference]: Finished difference. Result has 170 places, 434 transitions, 6526 flow [2024-06-28 03:53:20,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6526, PETRI_PLACES=170, PETRI_TRANSITIONS=434} [2024-06-28 03:53:20,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-28 03:53:20,129 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 434 transitions, 6526 flow [2024-06-28 03:53:20,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:20,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:20,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:20,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:53:20,129 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)] === [2024-06-28 03:53:20,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash 665887493, now seen corresponding path program 6 times [2024-06-28 03:53:20,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:20,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348114832] [2024-06-28 03:53:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:21,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348114832] [2024-06-28 03:53:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348114832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:21,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324321971] [2024-06-28 03:53:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:21,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:21,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 434 transitions, 6526 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:21,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:21,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:21,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:22,194 INFO L124 PetriNetUnfolderBase]: 3357/4938 cut-off events. [2024-06-28 03:53:22,194 INFO L125 PetriNetUnfolderBase]: For 101170/101178 co-relation queries the response was YES. [2024-06-28 03:53:22,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37975 conditions, 4938 events. 3357/4938 cut-off events. For 101170/101178 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24873 event pairs, 798 based on Foata normal form. 9/4947 useless extension candidates. Maximal degree in co-relation 37894. Up to 3878 conditions per place. [2024-06-28 03:53:22,235 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 265 selfloop transitions, 240 changer transitions 0/508 dead transitions. [2024-06-28 03:53:22,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 508 transitions, 8517 flow [2024-06-28 03:53:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:53:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:53:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:53:22,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:53:22,236 INFO L175 Difference]: Start difference. First operand has 170 places, 434 transitions, 6526 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:53:22,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 508 transitions, 8517 flow [2024-06-28 03:53:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 508 transitions, 8342 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:22,395 INFO L231 Difference]: Finished difference. Result has 176 places, 461 transitions, 7536 flow [2024-06-28 03:53:22,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6351, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7536, PETRI_PLACES=176, PETRI_TRANSITIONS=461} [2024-06-28 03:53:22,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 03:53:22,395 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 461 transitions, 7536 flow [2024-06-28 03:53:22,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:22,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:22,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:53:22,396 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)] === [2024-06-28 03:53:22,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -469429534, now seen corresponding path program 5 times [2024-06-28 03:53:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163535538] [2024-06-28 03:53:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163535538] [2024-06-28 03:53:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163535538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:23,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69517899] [2024-06-28 03:53:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:23,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:23,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 461 transitions, 7536 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:23,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:23,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:23,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:24,652 INFO L124 PetriNetUnfolderBase]: 3818/5612 cut-off events. [2024-06-28 03:53:24,652 INFO L125 PetriNetUnfolderBase]: For 129275/129277 co-relation queries the response was YES. [2024-06-28 03:53:24,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46008 conditions, 5612 events. 3818/5612 cut-off events. For 129275/129277 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 28813 event pairs, 1112 based on Foata normal form. 13/5625 useless extension candidates. Maximal degree in co-relation 45925. Up to 4616 conditions per place. [2024-06-28 03:53:24,712 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 397 selfloop transitions, 218 changer transitions 0/618 dead transitions. [2024-06-28 03:53:24,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 618 transitions, 11476 flow [2024-06-28 03:53:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:53:24,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:53:24,714 INFO L175 Difference]: Start difference. First operand has 176 places, 461 transitions, 7536 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:53:24,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 618 transitions, 11476 flow [2024-06-28 03:53:24,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 618 transitions, 11298 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:24,954 INFO L231 Difference]: Finished difference. Result has 184 places, 567 transitions, 10203 flow [2024-06-28 03:53:24,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7392, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10203, PETRI_PLACES=184, PETRI_TRANSITIONS=567} [2024-06-28 03:53:24,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 03:53:24,954 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 567 transitions, 10203 flow [2024-06-28 03:53:24,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:24,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:24,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:53:24,955 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)] === [2024-06-28 03:53:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -173290833, now seen corresponding path program 7 times [2024-06-28 03:53:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686150713] [2024-06-28 03:53:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686150713] [2024-06-28 03:53:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686150713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:25,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810676657] [2024-06-28 03:53:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:26,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:26,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 567 transitions, 10203 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:26,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:26,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:26,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:27,199 INFO L124 PetriNetUnfolderBase]: 3842/5635 cut-off events. [2024-06-28 03:53:27,199 INFO L125 PetriNetUnfolderBase]: For 133908/133923 co-relation queries the response was YES. [2024-06-28 03:53:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48145 conditions, 5635 events. 3842/5635 cut-off events. For 133908/133923 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 28958 event pairs, 924 based on Foata normal form. 24/5659 useless extension candidates. Maximal degree in co-relation 48058. Up to 4929 conditions per place. [2024-06-28 03:53:27,256 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 426 selfloop transitions, 188 changer transitions 0/617 dead transitions. [2024-06-28 03:53:27,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 617 transitions, 11902 flow [2024-06-28 03:53:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:53:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:53:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:53:27,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:53:27,258 INFO L175 Difference]: Start difference. First operand has 184 places, 567 transitions, 10203 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:53:27,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 617 transitions, 11902 flow [2024-06-28 03:53:27,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 617 transitions, 11599 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:27,571 INFO L231 Difference]: Finished difference. Result has 188 places, 579 transitions, 10555 flow [2024-06-28 03:53:27,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9901, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10555, PETRI_PLACES=188, PETRI_TRANSITIONS=579} [2024-06-28 03:53:27,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 03:53:27,571 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 579 transitions, 10555 flow [2024-06-28 03:53:27,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:27,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:27,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:27,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:53:27,572 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)] === [2024-06-28 03:53:27,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 669696773, now seen corresponding path program 8 times [2024-06-28 03:53:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:27,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125045445] [2024-06-28 03:53:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:28,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:28,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125045445] [2024-06-28 03:53:28,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125045445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:28,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:28,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610391326] [2024-06-28 03:53:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:28,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:28,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:28,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 579 transitions, 10555 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:28,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:28,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:28,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:29,993 INFO L124 PetriNetUnfolderBase]: 3904/5730 cut-off events. [2024-06-28 03:53:29,993 INFO L125 PetriNetUnfolderBase]: For 145014/145021 co-relation queries the response was YES. [2024-06-28 03:53:30,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49917 conditions, 5730 events. 3904/5730 cut-off events. For 145014/145021 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29502 event pairs, 1041 based on Foata normal form. 17/5747 useless extension candidates. Maximal degree in co-relation 49829. Up to 5322 conditions per place. [2024-06-28 03:53:30,046 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 524 selfloop transitions, 109 changer transitions 0/636 dead transitions. [2024-06-28 03:53:30,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 636 transitions, 12592 flow [2024-06-28 03:53:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:53:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:53:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:53:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:53:30,049 INFO L175 Difference]: Start difference. First operand has 188 places, 579 transitions, 10555 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:53:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 636 transitions, 12592 flow [2024-06-28 03:53:30,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 636 transitions, 12207 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:30,338 INFO L231 Difference]: Finished difference. Result has 191 places, 599 transitions, 10915 flow [2024-06-28 03:53:30,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10170, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10915, PETRI_PLACES=191, PETRI_TRANSITIONS=599} [2024-06-28 03:53:30,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 03:53:30,339 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 599 transitions, 10915 flow [2024-06-28 03:53:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:30,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:30,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:30,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:53:30,340 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)] === [2024-06-28 03:53:30,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 669702508, now seen corresponding path program 6 times [2024-06-28 03:53:30,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116828885] [2024-06-28 03:53:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:30,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116828885] [2024-06-28 03:53:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116828885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:31,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:31,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521827939] [2024-06-28 03:53:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:31,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:31,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:31,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 599 transitions, 10915 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:31,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:31,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:31,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:32,641 INFO L124 PetriNetUnfolderBase]: 4204/6165 cut-off events. [2024-06-28 03:53:32,641 INFO L125 PetriNetUnfolderBase]: For 166219/166224 co-relation queries the response was YES. [2024-06-28 03:53:32,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54826 conditions, 6165 events. 4204/6165 cut-off events. For 166219/166224 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 32046 event pairs, 1019 based on Foata normal form. 12/6177 useless extension candidates. Maximal degree in co-relation 54736. Up to 5330 conditions per place. [2024-06-28 03:53:32,700 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 515 selfloop transitions, 193 changer transitions 0/711 dead transitions. [2024-06-28 03:53:32,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 711 transitions, 14151 flow [2024-06-28 03:53:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:53:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:53:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 03:53:32,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 03:53:32,702 INFO L175 Difference]: Start difference. First operand has 191 places, 599 transitions, 10915 flow. Second operand 10 states and 173 transitions. [2024-06-28 03:53:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 711 transitions, 14151 flow [2024-06-28 03:53:33,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 711 transitions, 13808 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-28 03:53:33,049 INFO L231 Difference]: Finished difference. Result has 197 places, 652 transitions, 12330 flow [2024-06-28 03:53:33,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10586, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12330, PETRI_PLACES=197, PETRI_TRANSITIONS=652} [2024-06-28 03:53:33,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 03:53:33,050 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 652 transitions, 12330 flow [2024-06-28 03:53:33,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:33,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:33,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:53:33,051 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:33,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 669696928, now seen corresponding path program 7 times [2024-06-28 03:53:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100087832] [2024-06-28 03:53:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100087832] [2024-06-28 03:53:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100087832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:33,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740019577] [2024-06-28 03:53:33,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:33,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:33,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 652 transitions, 12330 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:33,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:33,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:35,352 INFO L124 PetriNetUnfolderBase]: 4157/6098 cut-off events. [2024-06-28 03:53:35,352 INFO L125 PetriNetUnfolderBase]: For 164431/164436 co-relation queries the response was YES. [2024-06-28 03:53:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54416 conditions, 6098 events. 4157/6098 cut-off events. For 164431/164436 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31624 event pairs, 1014 based on Foata normal form. 19/6117 useless extension candidates. Maximal degree in co-relation 54323. Up to 5300 conditions per place. [2024-06-28 03:53:35,417 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 511 selfloop transitions, 185 changer transitions 0/699 dead transitions. [2024-06-28 03:53:35,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 699 transitions, 14247 flow [2024-06-28 03:53:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:53:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:53:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:53:35,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 03:53:35,419 INFO L175 Difference]: Start difference. First operand has 197 places, 652 transitions, 12330 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:53:35,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 699 transitions, 14247 flow [2024-06-28 03:53:35,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 699 transitions, 13897 flow, removed 148 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:35,885 INFO L231 Difference]: Finished difference. Result has 200 places, 652 transitions, 12412 flow [2024-06-28 03:53:35,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11988, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12412, PETRI_PLACES=200, PETRI_TRANSITIONS=652} [2024-06-28 03:53:35,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-28 03:53:35,886 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 652 transitions, 12412 flow [2024-06-28 03:53:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:35,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:35,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:53:35,886 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:35,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -836876210, now seen corresponding path program 8 times [2024-06-28 03:53:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468262450] [2024-06-28 03:53:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:36,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468262450] [2024-06-28 03:53:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468262450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:36,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:36,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:36,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441262089] [2024-06-28 03:53:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:36,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:36,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 652 transitions, 12412 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:36,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:36,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:38,037 INFO L124 PetriNetUnfolderBase]: 4303/6314 cut-off events. [2024-06-28 03:53:38,037 INFO L125 PetriNetUnfolderBase]: For 168484/168494 co-relation queries the response was YES. [2024-06-28 03:53:38,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56841 conditions, 6314 events. 4303/6314 cut-off events. For 168484/168494 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32981 event pairs, 821 based on Foata normal form. 14/6328 useless extension candidates. Maximal degree in co-relation 56747. Up to 5562 conditions per place. [2024-06-28 03:53:38,108 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 561 selfloop transitions, 160 changer transitions 0/724 dead transitions. [2024-06-28 03:53:38,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 724 transitions, 15019 flow [2024-06-28 03:53:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:53:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:53:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:53:38,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 03:53:38,109 INFO L175 Difference]: Start difference. First operand has 200 places, 652 transitions, 12412 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:53:38,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 724 transitions, 15019 flow [2024-06-28 03:53:38,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 724 transitions, 14616 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:53:38,597 INFO L231 Difference]: Finished difference. Result has 200 places, 681 transitions, 13128 flow [2024-06-28 03:53:38,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12017, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13128, PETRI_PLACES=200, PETRI_TRANSITIONS=681} [2024-06-28 03:53:38,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-28 03:53:38,599 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 681 transitions, 13128 flow [2024-06-28 03:53:38,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:38,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:38,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:53:38,599 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:38,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -836881945, now seen corresponding path program 9 times [2024-06-28 03:53:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276443552] [2024-06-28 03:53:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:39,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:39,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276443552] [2024-06-28 03:53:39,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276443552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:39,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:39,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:39,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100344615] [2024-06-28 03:53:39,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:39,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:39,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:39,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:39,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:39,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 681 transitions, 13128 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:39,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:39,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:39,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:41,146 INFO L124 PetriNetUnfolderBase]: 4280/6287 cut-off events. [2024-06-28 03:53:41,146 INFO L125 PetriNetUnfolderBase]: For 166781/166794 co-relation queries the response was YES. [2024-06-28 03:53:41,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56562 conditions, 6287 events. 4280/6287 cut-off events. For 166781/166794 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 33000 event pairs, 990 based on Foata normal form. 24/6311 useless extension candidates. Maximal degree in co-relation 56467. Up to 5606 conditions per place. [2024-06-28 03:53:41,221 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 553 selfloop transitions, 168 changer transitions 0/724 dead transitions. [2024-06-28 03:53:41,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 724 transitions, 15052 flow [2024-06-28 03:53:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:53:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:53:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:53:41,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 03:53:41,223 INFO L175 Difference]: Start difference. First operand has 200 places, 681 transitions, 13128 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:53:41,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 724 transitions, 15052 flow [2024-06-28 03:53:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 724 transitions, 14589 flow, removed 133 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:41,673 INFO L231 Difference]: Finished difference. Result has 203 places, 681 transitions, 13076 flow [2024-06-28 03:53:41,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12665, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13076, PETRI_PLACES=203, PETRI_TRANSITIONS=681} [2024-06-28 03:53:41,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 03:53:41,674 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 681 transitions, 13076 flow [2024-06-28 03:53:41,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:41,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:41,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:41,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:53:41,674 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:41,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:41,675 INFO L85 PathProgramCache]: Analyzing trace with hash -836881790, now seen corresponding path program 9 times [2024-06-28 03:53:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:41,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280357392] [2024-06-28 03:53:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:42,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280357392] [2024-06-28 03:53:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280357392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546442848] [2024-06-28 03:53:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:42,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 681 transitions, 13076 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:44,016 INFO L124 PetriNetUnfolderBase]: 4233/6225 cut-off events. [2024-06-28 03:53:44,016 INFO L125 PetriNetUnfolderBase]: For 169259/169264 co-relation queries the response was YES. [2024-06-28 03:53:44,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55479 conditions, 6225 events. 4233/6225 cut-off events. For 169259/169264 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32657 event pairs, 992 based on Foata normal form. 19/6244 useless extension candidates. Maximal degree in co-relation 55384. Up to 5523 conditions per place. [2024-06-28 03:53:44,076 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 555 selfloop transitions, 165 changer transitions 0/723 dead transitions. [2024-06-28 03:53:44,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 723 transitions, 15008 flow [2024-06-28 03:53:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:53:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:53:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:53:44,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46785714285714286 [2024-06-28 03:53:44,077 INFO L175 Difference]: Start difference. First operand has 203 places, 681 transitions, 13076 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:53:44,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 723 transitions, 15008 flow [2024-06-28 03:53:44,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 723 transitions, 14397 flow, removed 137 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:44,483 INFO L231 Difference]: Finished difference. Result has 205 places, 681 transitions, 12828 flow [2024-06-28 03:53:44,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12465, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12828, PETRI_PLACES=205, PETRI_TRANSITIONS=681} [2024-06-28 03:53:44,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-28 03:53:44,484 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 681 transitions, 12828 flow [2024-06-28 03:53:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:44,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:44,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:53:44,485 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)] === [2024-06-28 03:53:44,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -829524560, now seen corresponding path program 10 times [2024-06-28 03:53:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569466129] [2024-06-28 03:53:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569466129] [2024-06-28 03:53:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569466129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677999676] [2024-06-28 03:53:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:45,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:45,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:45,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 681 transitions, 12828 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:45,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:45,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:45,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:46,725 INFO L124 PetriNetUnfolderBase]: 4216/6189 cut-off events. [2024-06-28 03:53:46,725 INFO L125 PetriNetUnfolderBase]: For 170873/170877 co-relation queries the response was YES. [2024-06-28 03:53:46,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54419 conditions, 6189 events. 4216/6189 cut-off events. For 170873/170877 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32371 event pairs, 1309 based on Foata normal form. 14/6203 useless extension candidates. Maximal degree in co-relation 54324. Up to 6007 conditions per place. [2024-06-28 03:53:46,779 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 671 selfloop transitions, 39 changer transitions 0/713 dead transitions. [2024-06-28 03:53:46,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 713 transitions, 14590 flow [2024-06-28 03:53:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:53:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:53:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:53:46,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 03:53:46,780 INFO L175 Difference]: Start difference. First operand has 205 places, 681 transitions, 12828 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:53:46,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 713 transitions, 14590 flow [2024-06-28 03:53:47,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 713 transitions, 14366 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:47,200 INFO L231 Difference]: Finished difference. Result has 208 places, 689 transitions, 12924 flow [2024-06-28 03:53:47,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12609, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12924, PETRI_PLACES=208, PETRI_TRANSITIONS=689} [2024-06-28 03:53:47,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 03:53:47,201 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 689 transitions, 12924 flow [2024-06-28 03:53:47,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:47,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:47,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:47,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:53:47,201 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:47,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -829257433, now seen corresponding path program 1 times [2024-06-28 03:53:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877785915] [2024-06-28 03:53:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877785915] [2024-06-28 03:53:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877785915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699366781] [2024-06-28 03:53:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:48,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:53:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 689 transitions, 12924 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:48,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:53:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:49,384 INFO L124 PetriNetUnfolderBase]: 4208/6181 cut-off events. [2024-06-28 03:53:49,385 INFO L125 PetriNetUnfolderBase]: For 167546/167550 co-relation queries the response was YES. [2024-06-28 03:53:49,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53449 conditions, 6181 events. 4208/6181 cut-off events. For 167546/167550 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 32403 event pairs, 1294 based on Foata normal form. 7/6188 useless extension candidates. Maximal degree in co-relation 53353. Up to 6035 conditions per place. [2024-06-28 03:53:49,590 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 674 selfloop transitions, 29 changer transitions 0/706 dead transitions. [2024-06-28 03:53:49,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 706 transitions, 14419 flow [2024-06-28 03:53:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:53:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:53:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 03:53:49,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:53:49,591 INFO L175 Difference]: Start difference. First operand has 208 places, 689 transitions, 12924 flow. Second operand 6 states and 98 transitions. [2024-06-28 03:53:49,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 706 transitions, 14419 flow [2024-06-28 03:53:49,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 706 transitions, 14234 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:50,004 INFO L231 Difference]: Finished difference. Result has 210 places, 689 transitions, 12819 flow [2024-06-28 03:53:50,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12739, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12819, PETRI_PLACES=210, PETRI_TRANSITIONS=689} [2024-06-28 03:53:50,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-28 03:53:50,006 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 689 transitions, 12819 flow [2024-06-28 03:53:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-28 03:53:50,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:50,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:53:50,006 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:53:50,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1888945963, now seen corresponding path program 1 times [2024-06-28 03:53:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458753565] [2024-06-28 03:53:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:50,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458753565] [2024-06-28 03:53:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458753565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:50,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:50,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:50,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190607103] [2024-06-28 03:53:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:50,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:53:50,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 689 transitions, 12819 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:50,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:50,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:53:50,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:52,216 INFO L124 PetriNetUnfolderBase]: 4249/6377 cut-off events. [2024-06-28 03:53:52,216 INFO L125 PetriNetUnfolderBase]: For 196583/196813 co-relation queries the response was YES. [2024-06-28 03:53:52,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54852 conditions, 6377 events. 4249/6377 cut-off events. For 196583/196813 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 35438 event pairs, 798 based on Foata normal form. 96/6423 useless extension candidates. Maximal degree in co-relation 54755. Up to 3226 conditions per place. [2024-06-28 03:53:52,288 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 271 selfloop transitions, 384 changer transitions 0/749 dead transitions. [2024-06-28 03:53:52,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 749 transitions, 14764 flow [2024-06-28 03:53:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:53:52,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 03:53:52,289 INFO L175 Difference]: Start difference. First operand has 210 places, 689 transitions, 12819 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:53:52,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 749 transitions, 14764 flow [2024-06-28 03:53:52,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 749 transitions, 14712 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:52,906 INFO L231 Difference]: Finished difference. Result has 217 places, 695 transitions, 13804 flow [2024-06-28 03:53:52,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12767, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13804, PETRI_PLACES=217, PETRI_TRANSITIONS=695} [2024-06-28 03:53:52,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 03:53:52,908 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 695 transitions, 13804 flow [2024-06-28 03:53:52,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:52,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:52,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:52,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:53:52,908 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)] === [2024-06-28 03:53:52,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1103055795, now seen corresponding path program 2 times [2024-06-28 03:53:52,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:52,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618773284] [2024-06-28 03:53:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:52,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:53,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618773284] [2024-06-28 03:53:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618773284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:53,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:53,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:53,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198750372] [2024-06-28 03:53:53,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:53,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:53,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:53:53,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 695 transitions, 13804 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:53,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:53,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:53:53,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:55,642 INFO L124 PetriNetUnfolderBase]: 4668/7065 cut-off events. [2024-06-28 03:53:55,642 INFO L125 PetriNetUnfolderBase]: For 253923/254207 co-relation queries the response was YES. [2024-06-28 03:53:55,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62302 conditions, 7065 events. 4668/7065 cut-off events. For 253923/254207 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 40810 event pairs, 1099 based on Foata normal form. 102/7089 useless extension candidates. Maximal degree in co-relation 62202. Up to 4241 conditions per place. [2024-06-28 03:53:55,730 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 276 selfloop transitions, 394 changer transitions 0/764 dead transitions. [2024-06-28 03:53:55,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 764 transitions, 16043 flow [2024-06-28 03:53:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:53:55,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 03:53:55,731 INFO L175 Difference]: Start difference. First operand has 217 places, 695 transitions, 13804 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:53:55,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 764 transitions, 16043 flow [2024-06-28 03:53:56,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 764 transitions, 15569 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:56,400 INFO L231 Difference]: Finished difference. Result has 222 places, 704 transitions, 14400 flow [2024-06-28 03:53:56,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13368, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14400, PETRI_PLACES=222, PETRI_TRANSITIONS=704} [2024-06-28 03:53:56,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 03:53:56,401 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 704 transitions, 14400 flow [2024-06-28 03:53:56,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:56,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:56,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:56,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:53:56,401 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)] === [2024-06-28 03:53:56,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1072522035, now seen corresponding path program 3 times [2024-06-28 03:53:56,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:56,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051667353] [2024-06-28 03:53:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:56,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:57,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051667353] [2024-06-28 03:53:57,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051667353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:57,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:53:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972905725] [2024-06-28 03:53:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:57,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:53:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:53:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:53:57,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:53:57,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 704 transitions, 14400 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:57,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:57,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:53:57,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:58,952 INFO L124 PetriNetUnfolderBase]: 4653/7055 cut-off events. [2024-06-28 03:53:58,952 INFO L125 PetriNetUnfolderBase]: For 255274/255500 co-relation queries the response was YES. [2024-06-28 03:53:59,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62865 conditions, 7055 events. 4653/7055 cut-off events. For 255274/255500 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 40815 event pairs, 1088 based on Foata normal form. 104/7092 useless extension candidates. Maximal degree in co-relation 62763. Up to 4784 conditions per place. [2024-06-28 03:53:59,034 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 268 selfloop transitions, 396 changer transitions 0/758 dead transitions. [2024-06-28 03:53:59,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 758 transitions, 16296 flow [2024-06-28 03:53:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:53:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 03:53:59,035 INFO L175 Difference]: Start difference. First operand has 222 places, 704 transitions, 14400 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:53:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 758 transitions, 16296 flow [2024-06-28 03:53:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 758 transitions, 15813 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:59,776 INFO L231 Difference]: Finished difference. Result has 227 places, 705 transitions, 14825 flow [2024-06-28 03:53:59,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13917, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14825, PETRI_PLACES=227, PETRI_TRANSITIONS=705} [2024-06-28 03:53:59,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 03:53:59,777 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 705 transitions, 14825 flow [2024-06-28 03:53:59,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:59,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:59,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:59,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:53:59,778 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)] === [2024-06-28 03:53:59,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:59,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1993434607, now seen corresponding path program 4 times [2024-06-28 03:53:59,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:59,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308242360] [2024-06-28 03:53:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308242360] [2024-06-28 03:54:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308242360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709849809] [2024-06-28 03:54:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:00,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:00,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:00,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 705 transitions, 14825 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:00,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:00,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:00,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:02,811 INFO L124 PetriNetUnfolderBase]: 5417/8147 cut-off events. [2024-06-28 03:54:02,811 INFO L125 PetriNetUnfolderBase]: For 281991/282004 co-relation queries the response was YES. [2024-06-28 03:54:02,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73409 conditions, 8147 events. 5417/8147 cut-off events. For 281991/282004 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 47162 event pairs, 1304 based on Foata normal form. 16/8163 useless extension candidates. Maximal degree in co-relation 73304. Up to 6375 conditions per place. [2024-06-28 03:54:02,905 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 493 selfloop transitions, 280 changer transitions 0/776 dead transitions. [2024-06-28 03:54:02,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 776 transitions, 17465 flow [2024-06-28 03:54:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:54:02,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-06-28 03:54:02,907 INFO L175 Difference]: Start difference. First operand has 227 places, 705 transitions, 14825 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:54:02,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 776 transitions, 17465 flow [2024-06-28 03:54:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 776 transitions, 16795 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:54:03,726 INFO L231 Difference]: Finished difference. Result has 232 places, 721 transitions, 15098 flow [2024-06-28 03:54:03,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14170, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15098, PETRI_PLACES=232, PETRI_TRANSITIONS=721} [2024-06-28 03:54:03,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 03:54:03,727 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 721 transitions, 15098 flow [2024-06-28 03:54:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:03,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:03,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:54:03,728 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:03,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1993495057, now seen corresponding path program 5 times [2024-06-28 03:54:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351470819] [2024-06-28 03:54:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351470819] [2024-06-28 03:54:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351470819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:04,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003771035] [2024-06-28 03:54:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:04,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:04,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:04,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 721 transitions, 15098 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:04,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:04,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:04,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:06,901 INFO L124 PetriNetUnfolderBase]: 5467/8229 cut-off events. [2024-06-28 03:54:06,901 INFO L125 PetriNetUnfolderBase]: For 298283/298296 co-relation queries the response was YES. [2024-06-28 03:54:06,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74744 conditions, 8229 events. 5467/8229 cut-off events. For 298283/298296 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 47867 event pairs, 1356 based on Foata normal form. 18/8247 useless extension candidates. Maximal degree in co-relation 74637. Up to 7099 conditions per place. [2024-06-28 03:54:06,998 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 497 selfloop transitions, 273 changer transitions 0/773 dead transitions. [2024-06-28 03:54:06,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 773 transitions, 17418 flow [2024-06-28 03:54:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 03:54:06,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:54:06,999 INFO L175 Difference]: Start difference. First operand has 232 places, 721 transitions, 15098 flow. Second operand 10 states and 180 transitions. [2024-06-28 03:54:06,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 773 transitions, 17418 flow [2024-06-28 03:54:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 773 transitions, 17038 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:54:07,810 INFO L231 Difference]: Finished difference. Result has 236 places, 726 transitions, 15421 flow [2024-06-28 03:54:07,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14720, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15421, PETRI_PLACES=236, PETRI_TRANSITIONS=726} [2024-06-28 03:54:07,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 03:54:07,811 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 726 transitions, 15421 flow [2024-06-28 03:54:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:07,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:07,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:54:07,812 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:07,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1996291567, now seen corresponding path program 6 times [2024-06-28 03:54:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599333223] [2024-06-28 03:54:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:08,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599333223] [2024-06-28 03:54:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599333223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:08,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355851092] [2024-06-28 03:54:08,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:08,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 726 transitions, 15421 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:08,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:11,391 INFO L124 PetriNetUnfolderBase]: 5558/8371 cut-off events. [2024-06-28 03:54:11,391 INFO L125 PetriNetUnfolderBase]: For 319784/319799 co-relation queries the response was YES. [2024-06-28 03:54:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76918 conditions, 8371 events. 5558/8371 cut-off events. For 319784/319799 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 48967 event pairs, 1478 based on Foata normal form. 36/8407 useless extension candidates. Maximal degree in co-relation 76809. Up to 7581 conditions per place. [2024-06-28 03:54:11,485 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 619 selfloop transitions, 161 changer transitions 0/783 dead transitions. [2024-06-28 03:54:11,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 783 transitions, 17580 flow [2024-06-28 03:54:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:54:11,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:54:11,487 INFO L175 Difference]: Start difference. First operand has 236 places, 726 transitions, 15421 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:54:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 783 transitions, 17580 flow [2024-06-28 03:54:12,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 783 transitions, 17061 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:12,356 INFO L231 Difference]: Finished difference. Result has 239 places, 733 transitions, 15442 flow [2024-06-28 03:54:12,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14904, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15442, PETRI_PLACES=239, PETRI_TRANSITIONS=733} [2024-06-28 03:54:12,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 03:54:12,360 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 733 transitions, 15442 flow [2024-06-28 03:54:12,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:12,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:12,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:12,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:54:12,360 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:12,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1996296341, now seen corresponding path program 1 times [2024-06-28 03:54:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103350860] [2024-06-28 03:54:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:13,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:13,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103350860] [2024-06-28 03:54:13,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103350860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:13,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:13,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524237460] [2024-06-28 03:54:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:13,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:13,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:13,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 733 transitions, 15442 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:13,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:13,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:13,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:15,606 INFO L124 PetriNetUnfolderBase]: 5536/8364 cut-off events. [2024-06-28 03:54:15,606 INFO L125 PetriNetUnfolderBase]: For 319178/319192 co-relation queries the response was YES. [2024-06-28 03:54:15,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76631 conditions, 8364 events. 5536/8364 cut-off events. For 319178/319192 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 49054 event pairs, 1238 based on Foata normal form. 16/8380 useless extension candidates. Maximal degree in co-relation 76521. Up to 6478 conditions per place. [2024-06-28 03:54:15,697 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 380 selfloop transitions, 402 changer transitions 0/785 dead transitions. [2024-06-28 03:54:15,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 785 transitions, 17687 flow [2024-06-28 03:54:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:54:15,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:54:15,699 INFO L175 Difference]: Start difference. First operand has 239 places, 733 transitions, 15442 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:54:15,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 785 transitions, 17687 flow [2024-06-28 03:54:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 785 transitions, 17290 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 03:54:16,573 INFO L231 Difference]: Finished difference. Result has 241 places, 733 transitions, 15868 flow [2024-06-28 03:54:16,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15045, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15868, PETRI_PLACES=241, PETRI_TRANSITIONS=733} [2024-06-28 03:54:16,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 03:54:16,574 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 733 transitions, 15868 flow [2024-06-28 03:54:16,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:16,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:16,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:54:16,575 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:16,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1331840329, now seen corresponding path program 2 times [2024-06-28 03:54:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497693829] [2024-06-28 03:54:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497693829] [2024-06-28 03:54:17,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497693829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:17,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736700874] [2024-06-28 03:54:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:17,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:17,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:17,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:17,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 733 transitions, 15868 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:17,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:20,063 INFO L124 PetriNetUnfolderBase]: 5586/8415 cut-off events. [2024-06-28 03:54:20,064 INFO L125 PetriNetUnfolderBase]: For 342346/342351 co-relation queries the response was YES. [2024-06-28 03:54:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78633 conditions, 8415 events. 5586/8415 cut-off events. For 342346/342351 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 49125 event pairs, 1629 based on Foata normal form. 10/8425 useless extension candidates. Maximal degree in co-relation 78522. Up to 7820 conditions per place. [2024-06-28 03:54:20,172 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 654 selfloop transitions, 136 changer transitions 0/793 dead transitions. [2024-06-28 03:54:20,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 793 transitions, 18168 flow [2024-06-28 03:54:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:54:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:54:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 03:54:20,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 03:54:20,174 INFO L175 Difference]: Start difference. First operand has 241 places, 733 transitions, 15868 flow. Second operand 12 states and 202 transitions. [2024-06-28 03:54:20,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 793 transitions, 18168 flow [2024-06-28 03:54:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 793 transitions, 17308 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:54:21,138 INFO L231 Difference]: Finished difference. Result has 245 places, 742 transitions, 15596 flow [2024-06-28 03:54:21,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15026, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15596, PETRI_PLACES=245, PETRI_TRANSITIONS=742} [2024-06-28 03:54:21,139 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 03:54:21,139 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 742 transitions, 15596 flow [2024-06-28 03:54:21,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:21,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:21,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:21,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:54:21,140 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:21,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash 389675929, now seen corresponding path program 3 times [2024-06-28 03:54:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921910529] [2024-06-28 03:54:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921910529] [2024-06-28 03:54:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921910529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062086728] [2024-06-28 03:54:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:22,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:22,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 742 transitions, 15596 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:22,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:22,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:22,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:24,562 INFO L124 PetriNetUnfolderBase]: 5564/8389 cut-off events. [2024-06-28 03:54:24,562 INFO L125 PetriNetUnfolderBase]: For 340649/340654 co-relation queries the response was YES. [2024-06-28 03:54:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77261 conditions, 8389 events. 5564/8389 cut-off events. For 340649/340654 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 49125 event pairs, 1629 based on Foata normal form. 10/8399 useless extension candidates. Maximal degree in co-relation 77149. Up to 7802 conditions per place. [2024-06-28 03:54:24,645 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 645 selfloop transitions, 134 changer transitions 0/782 dead transitions. [2024-06-28 03:54:24,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 782 transitions, 17377 flow [2024-06-28 03:54:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:54:24,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:54:24,647 INFO L175 Difference]: Start difference. First operand has 245 places, 742 transitions, 15596 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:54:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 782 transitions, 17377 flow [2024-06-28 03:54:25,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 782 transitions, 16995 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 03:54:25,534 INFO L231 Difference]: Finished difference. Result has 246 places, 742 transitions, 15496 flow [2024-06-28 03:54:25,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15214, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15496, PETRI_PLACES=246, PETRI_TRANSITIONS=742} [2024-06-28 03:54:25,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-28 03:54:25,535 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 742 transitions, 15496 flow [2024-06-28 03:54:25,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:25,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:25,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:25,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:54:25,536 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:25,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 389671155, now seen corresponding path program 7 times [2024-06-28 03:54:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:25,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602156614] [2024-06-28 03:54:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:25,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602156614] [2024-06-28 03:54:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602156614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:26,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:26,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155663989] [2024-06-28 03:54:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:26,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:26,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:26,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 742 transitions, 15496 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:26,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:26,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:26,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:28,887 INFO L124 PetriNetUnfolderBase]: 5614/8466 cut-off events. [2024-06-28 03:54:28,887 INFO L125 PetriNetUnfolderBase]: For 356952/356959 co-relation queries the response was YES. [2024-06-28 03:54:28,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77707 conditions, 8466 events. 5614/8466 cut-off events. For 356952/356959 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 49665 event pairs, 1684 based on Foata normal form. 28/8494 useless extension candidates. Maximal degree in co-relation 77594. Up to 8003 conditions per place. [2024-06-28 03:54:28,994 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 713 selfloop transitions, 81 changer transitions 0/797 dead transitions. [2024-06-28 03:54:28,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 797 transitions, 17656 flow [2024-06-28 03:54:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:54:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:54:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 03:54:28,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525 [2024-06-28 03:54:28,995 INFO L175 Difference]: Start difference. First operand has 246 places, 742 transitions, 15496 flow. Second operand 10 states and 181 transitions. [2024-06-28 03:54:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 797 transitions, 17656 flow [2024-06-28 03:54:30,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 797 transitions, 17409 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:30,256 INFO L231 Difference]: Finished difference. Result has 249 places, 748 transitions, 15605 flow [2024-06-28 03:54:30,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15249, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15605, PETRI_PLACES=249, PETRI_TRANSITIONS=748} [2024-06-28 03:54:30,257 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 03:54:30,257 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 748 transitions, 15605 flow [2024-06-28 03:54:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:30,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:30,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:30,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:54:30,257 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:30,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 389855853, now seen corresponding path program 1 times [2024-06-28 03:54:30,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:30,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315180888] [2024-06-28 03:54:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:30,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315180888] [2024-06-28 03:54:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315180888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:31,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:31,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64657547] [2024-06-28 03:54:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:31,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 748 transitions, 15605 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:31,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:31,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:33,535 INFO L124 PetriNetUnfolderBase]: 5631/8488 cut-off events. [2024-06-28 03:54:33,535 INFO L125 PetriNetUnfolderBase]: For 360758/360763 co-relation queries the response was YES. [2024-06-28 03:54:33,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78470 conditions, 8488 events. 5631/8488 cut-off events. For 360758/360763 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 49674 event pairs, 1646 based on Foata normal form. 6/8494 useless extension candidates. Maximal degree in co-relation 78356. Up to 8143 conditions per place. [2024-06-28 03:54:33,638 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 698 selfloop transitions, 81 changer transitions 0/782 dead transitions. [2024-06-28 03:54:33,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 782 transitions, 17351 flow [2024-06-28 03:54:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:54:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:54:33,639 INFO L175 Difference]: Start difference. First operand has 249 places, 748 transitions, 15605 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:54:33,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 782 transitions, 17351 flow [2024-06-28 03:54:34,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 782 transitions, 17172 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:34,617 INFO L231 Difference]: Finished difference. Result has 251 places, 750 transitions, 15634 flow [2024-06-28 03:54:34,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15426, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15634, PETRI_PLACES=251, PETRI_TRANSITIONS=750} [2024-06-28 03:54:34,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 03:54:34,618 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 750 transitions, 15634 flow [2024-06-28 03:54:34,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:34,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:34,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:34,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:54:34,618 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:34,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1670274089, now seen corresponding path program 8 times [2024-06-28 03:54:34,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:34,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45330660] [2024-06-28 03:54:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:34,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:35,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45330660] [2024-06-28 03:54:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45330660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155184953] [2024-06-28 03:54:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:35,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:35,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 750 transitions, 15634 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:35,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:38,039 INFO L124 PetriNetUnfolderBase]: 6038/9150 cut-off events. [2024-06-28 03:54:38,039 INFO L125 PetriNetUnfolderBase]: For 409301/409323 co-relation queries the response was YES. [2024-06-28 03:54:38,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84387 conditions, 9150 events. 6038/9150 cut-off events. For 409301/409323 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 54731 event pairs, 1056 based on Foata normal form. 22/9172 useless extension candidates. Maximal degree in co-relation 84272. Up to 5852 conditions per place. [2024-06-28 03:54:38,144 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 346 selfloop transitions, 468 changer transitions 0/817 dead transitions. [2024-06-28 03:54:38,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 817 transitions, 18357 flow [2024-06-28 03:54:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:54:38,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 03:54:38,146 INFO L175 Difference]: Start difference. First operand has 251 places, 750 transitions, 15634 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:54:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 817 transitions, 18357 flow [2024-06-28 03:54:39,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 817 transitions, 18205 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:54:39,271 INFO L231 Difference]: Finished difference. Result has 255 places, 763 transitions, 16902 flow [2024-06-28 03:54:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15482, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16902, PETRI_PLACES=255, PETRI_TRANSITIONS=763} [2024-06-28 03:54:39,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 03:54:39,272 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 763 transitions, 16902 flow [2024-06-28 03:54:39,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:39,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:39,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:54:39,273 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:39,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:39,273 INFO L85 PathProgramCache]: Analyzing trace with hash -832322855, now seen corresponding path program 9 times [2024-06-28 03:54:39,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163376694] [2024-06-28 03:54:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:39,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163376694] [2024-06-28 03:54:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163376694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:40,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:40,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516966727] [2024-06-28 03:54:40,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:40,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:40,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:40,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:40,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 763 transitions, 16902 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:40,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:40,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:40,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:42,861 INFO L124 PetriNetUnfolderBase]: 6105/9267 cut-off events. [2024-06-28 03:54:42,861 INFO L125 PetriNetUnfolderBase]: For 448505/448529 co-relation queries the response was YES. [2024-06-28 03:54:42,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88717 conditions, 9267 events. 6105/9267 cut-off events. For 448505/448529 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55960 event pairs, 1475 based on Foata normal form. 26/9293 useless extension candidates. Maximal degree in co-relation 88600. Up to 7520 conditions per place. [2024-06-28 03:54:42,970 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 376 selfloop transitions, 437 changer transitions 0/816 dead transitions. [2024-06-28 03:54:42,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 816 transitions, 19299 flow [2024-06-28 03:54:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:54:42,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:54:42,971 INFO L175 Difference]: Start difference. First operand has 255 places, 763 transitions, 16902 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:54:42,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 816 transitions, 19299 flow [2024-06-28 03:54:44,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 816 transitions, 18870 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 03:54:44,292 INFO L231 Difference]: Finished difference. Result has 260 places, 769 transitions, 17565 flow [2024-06-28 03:54:44,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16483, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=431, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17565, PETRI_PLACES=260, PETRI_TRANSITIONS=769} [2024-06-28 03:54:44,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 03:54:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 769 transitions, 17565 flow [2024-06-28 03:54:44,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:44,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:44,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:54:44,293 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1077047185, now seen corresponding path program 10 times [2024-06-28 03:54:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849667182] [2024-06-28 03:54:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849667182] [2024-06-28 03:54:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849667182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750682932] [2024-06-28 03:54:45,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:45,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:45,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:45,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 769 transitions, 17565 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:45,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:45,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:45,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:48,077 INFO L124 PetriNetUnfolderBase]: 6474/9882 cut-off events. [2024-06-28 03:54:48,078 INFO L125 PetriNetUnfolderBase]: For 533120/533133 co-relation queries the response was YES. [2024-06-28 03:54:48,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93913 conditions, 9882 events. 6474/9882 cut-off events. For 533120/533133 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 60782 event pairs, 1663 based on Foata normal form. 104/9986 useless extension candidates. Maximal degree in co-relation 93794. Up to 7887 conditions per place. [2024-06-28 03:54:48,211 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 518 selfloop transitions, 309 changer transitions 0/830 dead transitions. [2024-06-28 03:54:48,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 830 transitions, 20016 flow [2024-06-28 03:54:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:54:48,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 03:54:48,213 INFO L175 Difference]: Start difference. First operand has 260 places, 769 transitions, 17565 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:54:48,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 830 transitions, 20016 flow [2024-06-28 03:54:49,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 830 transitions, 19038 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:49,621 INFO L231 Difference]: Finished difference. Result has 263 places, 776 transitions, 17576 flow [2024-06-28 03:54:49,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16587, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17576, PETRI_PLACES=263, PETRI_TRANSITIONS=776} [2024-06-28 03:54:49,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 03:54:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 776 transitions, 17576 flow [2024-06-28 03:54:49,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:49,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:49,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:49,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:54:49,622 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:49,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -714230401, now seen corresponding path program 4 times [2024-06-28 03:54:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614781470] [2024-06-28 03:54:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614781470] [2024-06-28 03:54:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614781470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:50,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:50,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:54:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292386848] [2024-06-28 03:54:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:50,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:54:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:54:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:54:50,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:50,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 776 transitions, 17576 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:54:50,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:50,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:53,283 INFO L124 PetriNetUnfolderBase]: 6449/9870 cut-off events. [2024-06-28 03:54:53,283 INFO L125 PetriNetUnfolderBase]: For 488478/488483 co-relation queries the response was YES. [2024-06-28 03:54:53,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93734 conditions, 9870 events. 6449/9870 cut-off events. For 488478/488483 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 61207 event pairs, 1970 based on Foata normal form. 11/9881 useless extension candidates. Maximal degree in co-relation 93613. Up to 9068 conditions per place. [2024-06-28 03:54:53,399 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 633 selfloop transitions, 181 changer transitions 0/817 dead transitions. [2024-06-28 03:54:53,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 817 transitions, 19530 flow [2024-06-28 03:54:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:54:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:54:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:54:53,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:54:53,401 INFO L175 Difference]: Start difference. First operand has 263 places, 776 transitions, 17576 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:54:53,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 817 transitions, 19530 flow [2024-06-28 03:54:54,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 817 transitions, 18680 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:54,988 INFO L231 Difference]: Finished difference. Result has 264 places, 776 transitions, 17160 flow [2024-06-28 03:54:54,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16726, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17160, PETRI_PLACES=264, PETRI_TRANSITIONS=776} [2024-06-28 03:54:54,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 03:54:54,989 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 776 transitions, 17160 flow [2024-06-28 03:54:54,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:54:54,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:54,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:54:54,989 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:54,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:54,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1552125959, now seen corresponding path program 11 times [2024-06-28 03:54:54,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672605035] [2024-06-28 03:54:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672605035] [2024-06-28 03:54:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672605035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:54:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76901012] [2024-06-28 03:54:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:54:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:54:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:54:56,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:54:56,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 776 transitions, 17160 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:56,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:56,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:54:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:58,846 INFO L124 PetriNetUnfolderBase]: 6684/10215 cut-off events. [2024-06-28 03:54:58,846 INFO L125 PetriNetUnfolderBase]: For 501671/501678 co-relation queries the response was YES. [2024-06-28 03:54:58,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95399 conditions, 10215 events. 6684/10215 cut-off events. For 501671/501678 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 63286 event pairs, 2064 based on Foata normal form. 44/10259 useless extension candidates. Maximal degree in co-relation 95278. Up to 9316 conditions per place. [2024-06-28 03:54:58,988 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 705 selfloop transitions, 150 changer transitions 0/858 dead transitions. [2024-06-28 03:54:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 858 transitions, 19983 flow [2024-06-28 03:54:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:54:58,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 03:54:58,990 INFO L175 Difference]: Start difference. First operand has 264 places, 776 transitions, 17160 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:54:58,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 858 transitions, 19983 flow [2024-06-28 03:55:00,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 858 transitions, 19360 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:55:00,565 INFO L231 Difference]: Finished difference. Result has 268 places, 808 transitions, 17721 flow [2024-06-28 03:55:00,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16541, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17721, PETRI_PLACES=268, PETRI_TRANSITIONS=808} [2024-06-28 03:55:00,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 03:55:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 808 transitions, 17721 flow [2024-06-28 03:55:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:55:00,566 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -714050477, now seen corresponding path program 2 times [2024-06-28 03:55:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133659832] [2024-06-28 03:55:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133659832] [2024-06-28 03:55:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133659832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726129497] [2024-06-28 03:55:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:01,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:01,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:01,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 808 transitions, 17721 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:01,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:01,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:01,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:04,264 INFO L124 PetriNetUnfolderBase]: 6701/10235 cut-off events. [2024-06-28 03:55:04,264 INFO L125 PetriNetUnfolderBase]: For 506389/506394 co-relation queries the response was YES. [2024-06-28 03:55:04,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97757 conditions, 10235 events. 6701/10235 cut-off events. For 506389/506394 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 63458 event pairs, 2099 based on Foata normal form. 6/10241 useless extension candidates. Maximal degree in co-relation 97633. Up to 9828 conditions per place. [2024-06-28 03:55:04,404 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 757 selfloop transitions, 82 changer transitions 0/842 dead transitions. [2024-06-28 03:55:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 842 transitions, 19633 flow [2024-06-28 03:55:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:55:04,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:55:04,407 INFO L175 Difference]: Start difference. First operand has 268 places, 808 transitions, 17721 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:55:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 842 transitions, 19633 flow [2024-06-28 03:55:05,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 842 transitions, 19433 flow, removed 95 selfloop flow, removed 2 redundant places. [2024-06-28 03:55:05,835 INFO L231 Difference]: Finished difference. Result has 274 places, 810 transitions, 17742 flow [2024-06-28 03:55:05,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17521, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17742, PETRI_PLACES=274, PETRI_TRANSITIONS=810} [2024-06-28 03:55:05,836 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 03:55:05,836 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 810 transitions, 17742 flow [2024-06-28 03:55:05,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:05,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:05,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:55:05,837 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:05,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash -173350479, now seen corresponding path program 3 times [2024-06-28 03:55:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:05,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607455091] [2024-06-28 03:55:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:06,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607455091] [2024-06-28 03:55:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607455091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:06,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:06,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342124607] [2024-06-28 03:55:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:06,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:06,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:06,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 810 transitions, 17742 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:06,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:06,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:06,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:09,529 INFO L124 PetriNetUnfolderBase]: 6718/10262 cut-off events. [2024-06-28 03:55:09,530 INFO L125 PetriNetUnfolderBase]: For 519584/519589 co-relation queries the response was YES. [2024-06-28 03:55:09,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98036 conditions, 10262 events. 6718/10262 cut-off events. For 519584/519589 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 63713 event pairs, 2041 based on Foata normal form. 6/10268 useless extension candidates. Maximal degree in co-relation 97910. Up to 9831 conditions per place. [2024-06-28 03:55:09,674 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 752 selfloop transitions, 84 changer transitions 0/839 dead transitions. [2024-06-28 03:55:09,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 839 transitions, 19610 flow [2024-06-28 03:55:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:55:09,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:55:09,675 INFO L175 Difference]: Start difference. First operand has 274 places, 810 transitions, 17742 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:55:09,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 839 transitions, 19610 flow [2024-06-28 03:55:11,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 839 transitions, 19457 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:11,172 INFO L231 Difference]: Finished difference. Result has 277 places, 812 transitions, 17823 flow [2024-06-28 03:55:11,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17589, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17823, PETRI_PLACES=277, PETRI_TRANSITIONS=812} [2024-06-28 03:55:11,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 03:55:11,173 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 812 transitions, 17823 flow [2024-06-28 03:55:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:11,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:11,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:55:11,173 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:11,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash -173535177, now seen corresponding path program 12 times [2024-06-28 03:55:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371134810] [2024-06-28 03:55:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:12,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371134810] [2024-06-28 03:55:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371134810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:12,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:12,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:12,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708828506] [2024-06-28 03:55:12,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:12,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:12,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:12,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:12,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 812 transitions, 17823 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:12,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:12,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:12,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:15,201 INFO L124 PetriNetUnfolderBase]: 6949/10682 cut-off events. [2024-06-28 03:55:15,201 INFO L125 PetriNetUnfolderBase]: For 592964/592988 co-relation queries the response was YES. [2024-06-28 03:55:15,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101205 conditions, 10682 events. 6949/10682 cut-off events. For 592964/592988 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67412 event pairs, 1712 based on Foata normal form. 78/10760 useless extension candidates. Maximal degree in co-relation 101078. Up to 9404 conditions per place. [2024-06-28 03:55:15,351 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 668 selfloop transitions, 196 changer transitions 0/867 dead transitions. [2024-06-28 03:55:15,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 867 transitions, 20257 flow [2024-06-28 03:55:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:55:15,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:55:15,353 INFO L175 Difference]: Start difference. First operand has 277 places, 812 transitions, 17823 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:55:15,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 867 transitions, 20257 flow [2024-06-28 03:55:16,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 867 transitions, 20106 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:16,933 INFO L231 Difference]: Finished difference. Result has 281 places, 816 transitions, 18274 flow [2024-06-28 03:55:16,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17676, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18274, PETRI_PLACES=281, PETRI_TRANSITIONS=816} [2024-06-28 03:55:16,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 03:55:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 816 transitions, 18274 flow [2024-06-28 03:55:16,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:16,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:16,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:55:16,934 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)] === [2024-06-28 03:55:16,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 54550671, now seen corresponding path program 4 times [2024-06-28 03:55:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340444794] [2024-06-28 03:55:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340444794] [2024-06-28 03:55:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340444794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:17,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:17,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936971451] [2024-06-28 03:55:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:17,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:17,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 816 transitions, 18274 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:17,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:17,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:17,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:20,958 INFO L124 PetriNetUnfolderBase]: 6966/10691 cut-off events. [2024-06-28 03:55:20,958 INFO L125 PetriNetUnfolderBase]: For 549779/549783 co-relation queries the response was YES. [2024-06-28 03:55:21,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102150 conditions, 10691 events. 6966/10691 cut-off events. For 549779/549783 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 67273 event pairs, 2708 based on Foata normal form. 8/10699 useless extension candidates. Maximal degree in co-relation 102022. Up to 10453 conditions per place. [2024-06-28 03:55:21,090 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 811 selfloop transitions, 26 changer transitions 0/840 dead transitions. [2024-06-28 03:55:21,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 840 transitions, 20112 flow [2024-06-28 03:55:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 03:55:21,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:55:21,091 INFO L175 Difference]: Start difference. First operand has 281 places, 816 transitions, 18274 flow. Second operand 7 states and 112 transitions. [2024-06-28 03:55:21,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 840 transitions, 20112 flow [2024-06-28 03:55:22,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 840 transitions, 19679 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:55:22,497 INFO L231 Difference]: Finished difference. Result has 281 places, 818 transitions, 17950 flow [2024-06-28 03:55:22,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17841, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17950, PETRI_PLACES=281, PETRI_TRANSITIONS=818} [2024-06-28 03:55:22,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 03:55:22,498 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 818 transitions, 17950 flow [2024-06-28 03:55:22,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:22,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:22,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:22,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:55:22,498 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)] === [2024-06-28 03:55:22,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 63121551, now seen corresponding path program 5 times [2024-06-28 03:55:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701038214] [2024-06-28 03:55:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701038214] [2024-06-28 03:55:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701038214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535400973] [2024-06-28 03:55:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:23,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:23,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 818 transitions, 17950 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:23,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:23,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:23,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:27,137 INFO L124 PetriNetUnfolderBase]: 6983/10706 cut-off events. [2024-06-28 03:55:27,137 INFO L125 PetriNetUnfolderBase]: For 551805/551809 co-relation queries the response was YES. [2024-06-28 03:55:27,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101224 conditions, 10706 events. 6983/10706 cut-off events. For 551805/551809 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 67093 event pairs, 2660 based on Foata normal form. 8/10714 useless extension candidates. Maximal degree in co-relation 101095. Up to 10490 conditions per place. [2024-06-28 03:55:27,276 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 820 selfloop transitions, 17 changer transitions 0/840 dead transitions. [2024-06-28 03:55:27,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 840 transitions, 19770 flow [2024-06-28 03:55:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 03:55:27,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-06-28 03:55:27,277 INFO L175 Difference]: Start difference. First operand has 281 places, 818 transitions, 17950 flow. Second operand 7 states and 111 transitions. [2024-06-28 03:55:27,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 840 transitions, 19770 flow [2024-06-28 03:55:28,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 840 transitions, 19685 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:28,738 INFO L231 Difference]: Finished difference. Result has 283 places, 820 transitions, 17958 flow [2024-06-28 03:55:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17865, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17958, PETRI_PLACES=283, PETRI_TRANSITIONS=820} [2024-06-28 03:55:28,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 03:55:28,739 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 820 transitions, 17958 flow [2024-06-28 03:55:28,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:28,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:28,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:55:28,739 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)] === [2024-06-28 03:55:28,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1423878337, now seen corresponding path program 6 times [2024-06-28 03:55:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500219671] [2024-06-28 03:55:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500219671] [2024-06-28 03:55:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500219671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:29,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:29,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192604928] [2024-06-28 03:55:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:29,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:29,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 820 transitions, 17958 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:29,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:29,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:29,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:33,389 INFO L124 PetriNetUnfolderBase]: 6975/10705 cut-off events. [2024-06-28 03:55:33,389 INFO L125 PetriNetUnfolderBase]: For 563805/563805 co-relation queries the response was YES. [2024-06-28 03:55:33,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101312 conditions, 10705 events. 6975/10705 cut-off events. For 563805/563805 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 67368 event pairs, 2696 based on Foata normal form. 4/10709 useless extension candidates. Maximal degree in co-relation 101182. Up to 10436 conditions per place. [2024-06-28 03:55:33,539 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 810 selfloop transitions, 35 changer transitions 0/848 dead transitions. [2024-06-28 03:55:33,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 848 transitions, 19842 flow [2024-06-28 03:55:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:55:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:55:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 03:55:33,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-28 03:55:33,540 INFO L175 Difference]: Start difference. First operand has 283 places, 820 transitions, 17958 flow. Second operand 9 states and 133 transitions. [2024-06-28 03:55:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 848 transitions, 19842 flow [2024-06-28 03:55:35,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 848 transitions, 19769 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:35,121 INFO L231 Difference]: Finished difference. Result has 287 places, 822 transitions, 18024 flow [2024-06-28 03:55:35,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17885, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18024, PETRI_PLACES=287, PETRI_TRANSITIONS=822} [2024-06-28 03:55:35,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 03:55:35,122 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 822 transitions, 18024 flow [2024-06-28 03:55:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:35,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:35,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:55:35,122 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)] === [2024-06-28 03:55:35,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash -560841533, now seen corresponding path program 1 times [2024-06-28 03:55:35,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:35,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517082721] [2024-06-28 03:55:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:36,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517082721] [2024-06-28 03:55:36,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517082721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:36,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:36,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814781644] [2024-06-28 03:55:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:36,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:36,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:36,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 822 transitions, 18024 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:36,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:36,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:36,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:39,366 INFO L124 PetriNetUnfolderBase]: 6925/10613 cut-off events. [2024-06-28 03:55:39,367 INFO L125 PetriNetUnfolderBase]: For 573301/573305 co-relation queries the response was YES. [2024-06-28 03:55:39,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100591 conditions, 10613 events. 6925/10613 cut-off events. For 573301/573305 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 66548 event pairs, 2690 based on Foata normal form. 8/10621 useless extension candidates. Maximal degree in co-relation 100460. Up to 10325 conditions per place. [2024-06-28 03:55:39,672 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 791 selfloop transitions, 53 changer transitions 0/847 dead transitions. [2024-06-28 03:55:39,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 847 transitions, 19896 flow [2024-06-28 03:55:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:55:39,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 03:55:39,674 INFO L175 Difference]: Start difference. First operand has 287 places, 822 transitions, 18024 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:55:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 847 transitions, 19896 flow [2024-06-28 03:55:41,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 847 transitions, 19691 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-28 03:55:41,112 INFO L231 Difference]: Finished difference. Result has 286 places, 823 transitions, 17996 flow [2024-06-28 03:55:41,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17827, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17996, PETRI_PLACES=286, PETRI_TRANSITIONS=823} [2024-06-28 03:55:41,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 03:55:41,113 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 823 transitions, 17996 flow [2024-06-28 03:55:41,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:41,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:41,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:55:41,114 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)] === [2024-06-28 03:55:41,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1319749297, now seen corresponding path program 1 times [2024-06-28 03:55:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:41,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609884417] [2024-06-28 03:55:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609884417] [2024-06-28 03:55:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609884417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:41,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:41,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:55:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31239052] [2024-06-28 03:55:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:55:41,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:55:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:55:41,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:55:41,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 823 transitions, 17996 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:41,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:41,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:55:41,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:44,977 INFO L124 PetriNetUnfolderBase]: 6637/10216 cut-off events. [2024-06-28 03:55:44,977 INFO L125 PetriNetUnfolderBase]: For 569051/569439 co-relation queries the response was YES. [2024-06-28 03:55:45,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97087 conditions, 10216 events. 6637/10216 cut-off events. For 569051/569439 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 64412 event pairs, 2116 based on Foata normal form. 288/10439 useless extension candidates. Maximal degree in co-relation 96957. Up to 9769 conditions per place. [2024-06-28 03:55:45,096 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 746 selfloop transitions, 58 changer transitions 0/841 dead transitions. [2024-06-28 03:55:45,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 841 transitions, 19778 flow [2024-06-28 03:55:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:55:45,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:55:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 03:55:45,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-06-28 03:55:45,098 INFO L175 Difference]: Start difference. First operand has 286 places, 823 transitions, 17996 flow. Second operand 5 states and 93 transitions. [2024-06-28 03:55:45,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 841 transitions, 19778 flow [2024-06-28 03:55:46,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 841 transitions, 19653 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:46,514 INFO L231 Difference]: Finished difference. Result has 286 places, 826 transitions, 18113 flow [2024-06-28 03:55:46,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17871, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=18113, PETRI_PLACES=286, PETRI_TRANSITIONS=826} [2024-06-28 03:55:46,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 03:55:46,515 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 826 transitions, 18113 flow [2024-06-28 03:55:46,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:46,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:46,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:55:46,515 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1666932139, now seen corresponding path program 1 times [2024-06-28 03:55:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488662674] [2024-06-28 03:55:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488662674] [2024-06-28 03:55:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488662674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565630084] [2024-06-28 03:55:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:47,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:47,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 826 transitions, 18113 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:47,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:47,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:47,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:51,014 INFO L124 PetriNetUnfolderBase]: 7486/11523 cut-off events. [2024-06-28 03:55:51,014 INFO L125 PetriNetUnfolderBase]: For 650248/650266 co-relation queries the response was YES. [2024-06-28 03:55:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108762 conditions, 11523 events. 7486/11523 cut-off events. For 650248/650266 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 73733 event pairs, 1584 based on Foata normal form. 36/11559 useless extension candidates. Maximal degree in co-relation 108631. Up to 7510 conditions per place. [2024-06-28 03:55:51,370 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 462 selfloop transitions, 429 changer transitions 0/894 dead transitions. [2024-06-28 03:55:51,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 894 transitions, 20729 flow [2024-06-28 03:55:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 03:55:51,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 03:55:51,371 INFO L175 Difference]: Start difference. First operand has 286 places, 826 transitions, 18113 flow. Second operand 10 states and 184 transitions. [2024-06-28 03:55:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 894 transitions, 20729 flow [2024-06-28 03:55:52,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 894 transitions, 20593 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:52,950 INFO L231 Difference]: Finished difference. Result has 293 places, 836 transitions, 19262 flow [2024-06-28 03:55:52,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17987, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19262, PETRI_PLACES=293, PETRI_TRANSITIONS=836} [2024-06-28 03:55:52,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 03:55:52,951 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 836 transitions, 19262 flow [2024-06-28 03:55:52,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:52,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:52,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:55:52,952 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:52,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1668809809, now seen corresponding path program 2 times [2024-06-28 03:55:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493673507] [2024-06-28 03:55:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:53,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493673507] [2024-06-28 03:55:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493673507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203925631] [2024-06-28 03:55:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:53,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:53,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:53,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:55:53,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 836 transitions, 19262 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:53,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:53,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:55:53,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:57,906 INFO L124 PetriNetUnfolderBase]: 7747/11977 cut-off events. [2024-06-28 03:55:57,906 INFO L125 PetriNetUnfolderBase]: For 671925/671943 co-relation queries the response was YES. [2024-06-28 03:55:58,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113291 conditions, 11977 events. 7747/11977 cut-off events. For 671925/671943 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 77955 event pairs, 1815 based on Foata normal form. 60/12037 useless extension candidates. Maximal degree in co-relation 113159. Up to 9679 conditions per place. [2024-06-28 03:55:58,056 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 474 selfloop transitions, 417 changer transitions 0/894 dead transitions. [2024-06-28 03:55:58,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 894 transitions, 21559 flow [2024-06-28 03:55:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:55:58,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:55:58,057 INFO L175 Difference]: Start difference. First operand has 293 places, 836 transitions, 19262 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:55:58,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 894 transitions, 21559 flow [2024-06-28 03:55:59,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 894 transitions, 21250 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:59,627 INFO L231 Difference]: Finished difference. Result has 298 places, 841 transitions, 19956 flow [2024-06-28 03:55:59,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18953, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=412, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19956, PETRI_PLACES=298, PETRI_TRANSITIONS=841} [2024-06-28 03:55:59,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 03:55:59,628 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 841 transitions, 19956 flow [2024-06-28 03:55:59,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:59,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:59,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:59,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:55:59,628 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:59,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:59,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1358704029, now seen corresponding path program 3 times [2024-06-28 03:55:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510491512] [2024-06-28 03:55:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:59,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510491512] [2024-06-28 03:56:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510491512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209888914] [2024-06-28 03:56:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:00,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:00,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:56:00,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 841 transitions, 19956 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:00,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:00,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:56:00,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand