./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.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/protection/mix005_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix005_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:48:38,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:48:38,410 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:48:38,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:48:38,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:48:38,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:48:38,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:48:38,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:48:38,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:48:38,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:48:38,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:48:38,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:48:38,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:48:38,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:48:38,437 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:48:38,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:48:38,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:48:38,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:48:38,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:48:38,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:48:38,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:48:38,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:48:38,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:48:38,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:48:38,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:48:38,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:48:38,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:48:38,441 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:48:38,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:48:38,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:48:38,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:48:38,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:48:38,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:48:38,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:48:38,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:48:38,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:48:38,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:48:38,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:48:38,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:48:38,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:48:38,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:48:38,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:48:38,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:48:38,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:48:38,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:48:38,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:48:38,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:48:38,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:48:38,674 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:48:38,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 19:48:39,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:48:40,157 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:48:40,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 19:48:40,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a28f221/133c66733c544fa094acd04b9c47b31c/FLAG15822f07a [2024-06-27 19:48:40,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a28f221/133c66733c544fa094acd04b9c47b31c [2024-06-27 19:48:40,186 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:48:40,187 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:48:40,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix005_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 19:48:40,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:48:40,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:48:40,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:48:40,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:48:40,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:48:40,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:48:40" (1/2) ... [2024-06-27 19:48:40,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7a82ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:48:40, skipping insertion in model container [2024-06-27 19:48:40,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:48:40" (1/2) ... [2024-06-27 19:48:40,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@542fb98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:48:40, skipping insertion in model container [2024-06-27 19:48:40,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:40" (2/2) ... [2024-06-27 19:48:40,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7a82ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40, skipping insertion in model container [2024-06-27 19:48:40,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:40" (2/2) ... [2024-06-27 19:48:40,411 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:48:40,563 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:48:40,565 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1)) [2024-06-27 19:48:40,565 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1)) [2024-06-27 19:48:40,565 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] (((((((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1)) [2024-06-27 19:48:40,565 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1)) [2024-06-27 19:48:40,565 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:48:40,566 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 19:48:40,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:48:41,034 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:48:41,047 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:48:41,167 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:48:41,207 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:48:41,208 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41 WrapperNode [2024-06-27 19:48:41,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:48:41,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:48:41,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:48:41,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:48:41,217 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 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,249 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 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,283 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 140 [2024-06-27 19:48:41,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:48:41,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:48:41,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:48:41,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:48:41,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,323 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:48:41,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:48:41,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:48:41,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:48:41,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:48:41,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (1/1) ... [2024-06-27 19:48:41,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:48:41,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:48:41,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 19:48:41,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 19:48:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:48:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:48:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:48:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:48:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:48:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:48:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:48:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:48:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:48:41,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:48:41,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:48:41,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:48:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:48:41,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:48:41,451 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:48:41,630 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:48:41,632 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:48:42,079 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:48:42,080 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:48:42,282 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:48:42,283 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:48:42,283 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:48:42 BoogieIcfgContainer [2024-06-27 19:48:42,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:48:42,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:48:42,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:48:42,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:48:42,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:48:40" (1/4) ... [2024-06-27 19:48:42,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555be566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:48:42, skipping insertion in model container [2024-06-27 19:48:42,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:40" (2/4) ... [2024-06-27 19:48:42,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555be566 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:48:42, skipping insertion in model container [2024-06-27 19:48:42,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:41" (3/4) ... [2024-06-27 19:48:42,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555be566 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:48:42, skipping insertion in model container [2024-06-27 19:48:42,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:48:42" (4/4) ... [2024-06-27 19:48:42,297 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 19:48:42,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:48:42,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 19:48:42,311 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:48:42,386 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:48:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 19:48:42,464 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 19:48:42,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:48:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:48:42,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 19:48:42,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 19:48:42,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:48:42,485 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;@7e064e53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:48:42,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 19:48:42,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:48:42,491 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:48:42,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:48:42,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:42,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:48:42,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:42,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 408787517, now seen corresponding path program 1 times [2024-06-27 19:48:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:42,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731935820] [2024-06-27 19:48:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731935820] [2024-06-27 19:48:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731935820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:48:43,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846172860] [2024-06-27 19:48:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:48:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:48:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:48:43,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:43,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:43,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:43,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:43,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:45,789 INFO L124 PetriNetUnfolderBase]: 9587/13493 cut-off events. [2024-06-27 19:48:45,789 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 19:48:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26901 conditions, 13493 events. 9587/13493 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 76037 event pairs, 7462 based on Foata normal form. 1/13170 useless extension candidates. Maximal degree in co-relation 26888. Up to 13017 conditions per place. [2024-06-27 19:48:45,898 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 19:48:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 231 flow [2024-06-27 19:48:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:48:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:48:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 19:48:45,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2024-06-27 19:48:45,914 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 100 transitions. [2024-06-27 19:48:45,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 231 flow [2024-06-27 19:48:45,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:48:46,022 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 19:48:46,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 19:48:46,026 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 19:48:46,027 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 19:48:46,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:46,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:46,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:46,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:48:46,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:46,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2002836572, now seen corresponding path program 1 times [2024-06-27 19:48:46,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:46,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408799973] [2024-06-27 19:48:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:46,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:46,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408799973] [2024-06-27 19:48:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408799973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:48:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608280693] [2024-06-27 19:48:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:46,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:48:46,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:48:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:48:46,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:46,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:46,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:46,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:46,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:48,876 INFO L124 PetriNetUnfolderBase]: 9577/13487 cut-off events. [2024-06-27 19:48:48,876 INFO L125 PetriNetUnfolderBase]: For 2586/2586 co-relation queries the response was YES. [2024-06-27 19:48:48,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30336 conditions, 13487 events. 9577/13487 cut-off events. For 2586/2586 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 75961 event pairs, 6775 based on Foata normal form. 4/13350 useless extension candidates. Maximal degree in co-relation 30324. Up to 12982 conditions per place. [2024-06-27 19:48:48,961 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 19:48:48,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-27 19:48:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:48:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:48:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 19:48:48,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-06-27 19:48:48,969 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 130 transitions. [2024-06-27 19:48:48,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-27 19:48:48,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:48:48,974 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 19:48:48,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 19:48:48,975 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 19:48:48,976 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 19:48:48,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:48,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:48,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:48,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:48:48,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:48,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1958393420, now seen corresponding path program 1 times [2024-06-27 19:48:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700971355] [2024-06-27 19:48:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700971355] [2024-06-27 19:48:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700971355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:49,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:48:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585726581] [2024-06-27 19:48:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:48:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:48:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:48:49,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:49,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:49,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:49,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:51,724 INFO L124 PetriNetUnfolderBase]: 9685/13732 cut-off events. [2024-06-27 19:48:51,725 INFO L125 PetriNetUnfolderBase]: For 7550/7550 co-relation queries the response was YES. [2024-06-27 19:48:51,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34271 conditions, 13732 events. 9685/13732 cut-off events. For 7550/7550 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 78287 event pairs, 5476 based on Foata normal form. 10/13600 useless extension candidates. Maximal degree in co-relation 34257. Up to 12955 conditions per place. [2024-06-27 19:48:51,813 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 73 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-27 19:48:51,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 547 flow [2024-06-27 19:48:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:48:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:48:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-06-27 19:48:51,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6490566037735849 [2024-06-27 19:48:51,815 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 172 transitions. [2024-06-27 19:48:51,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 547 flow [2024-06-27 19:48:51,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 528 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:48:51,820 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 314 flow [2024-06-27 19:48:51,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-27 19:48:51,821 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 19:48:51,821 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 314 flow [2024-06-27 19:48:51,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:51,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:51,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:51,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:48:51,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:51,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1190179599, now seen corresponding path program 1 times [2024-06-27 19:48:51,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:51,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147426516] [2024-06-27 19:48:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:51,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147426516] [2024-06-27 19:48:52,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147426516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:52,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:52,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:48:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087629680] [2024-06-27 19:48:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:48:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:48:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:48:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:53,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:53,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:53,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:53,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:54,957 INFO L124 PetriNetUnfolderBase]: 9731/13754 cut-off events. [2024-06-27 19:48:54,957 INFO L125 PetriNetUnfolderBase]: For 18161/18164 co-relation queries the response was YES. [2024-06-27 19:48:54,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40663 conditions, 13754 events. 9731/13754 cut-off events. For 18161/18164 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 78085 event pairs, 4552 based on Foata normal form. 10/13648 useless extension candidates. Maximal degree in co-relation 40646. Up to 12877 conditions per place. [2024-06-27 19:48:55,051 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 88 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-06-27 19:48:55,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 134 transitions, 858 flow [2024-06-27 19:48:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:48:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:48:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-06-27 19:48:55,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2024-06-27 19:48:55,055 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 314 flow. Second operand 6 states and 208 transitions. [2024-06-27 19:48:55,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 134 transitions, 858 flow [2024-06-27 19:48:55,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 846 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 19:48:55,069 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 552 flow [2024-06-27 19:48:55,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-27 19:48:55,070 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-06-27 19:48:55,071 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 552 flow [2024-06-27 19:48:55,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:55,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:55,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:55,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:48:55,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:55,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash 820460619, now seen corresponding path program 1 times [2024-06-27 19:48:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268794034] [2024-06-27 19:48:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268794034] [2024-06-27 19:48:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268794034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:48:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820154921] [2024-06-27 19:48:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:48:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:48:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:48:56,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:56,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:56,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:56,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:56,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:58,398 INFO L124 PetriNetUnfolderBase]: 9918/14105 cut-off events. [2024-06-27 19:48:58,399 INFO L125 PetriNetUnfolderBase]: For 34218/34225 co-relation queries the response was YES. [2024-06-27 19:48:58,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48068 conditions, 14105 events. 9918/14105 cut-off events. For 34218/34225 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 80758 event pairs, 3760 based on Foata normal form. 40/14039 useless extension candidates. Maximal degree in co-relation 48045. Up to 12878 conditions per place. [2024-06-27 19:48:58,531 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 99 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-27 19:48:58,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1092 flow [2024-06-27 19:48:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:48:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:48:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-06-27 19:48:58,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-27 19:48:58,538 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 552 flow. Second operand 7 states and 238 transitions. [2024-06-27 19:48:58,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1092 flow [2024-06-27 19:48:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 1070 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 19:48:58,563 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 647 flow [2024-06-27 19:48:58,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 19:48:58,567 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-27 19:48:58,568 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 647 flow [2024-06-27 19:48:58,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:58,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:58,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:48:58,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:48:58,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -411394019, now seen corresponding path program 1 times [2024-06-27 19:48:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705774601] [2024-06-27 19:48:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705774601] [2024-06-27 19:48:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705774601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:48:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061629732] [2024-06-27 19:48:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:59,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:48:59,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:59,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:48:59,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:48:59,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:48:59,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:59,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:59,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:48:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:01,134 INFO L124 PetriNetUnfolderBase]: 9900/14072 cut-off events. [2024-06-27 19:49:01,135 INFO L125 PetriNetUnfolderBase]: For 43617/43617 co-relation queries the response was YES. [2024-06-27 19:49:01,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50595 conditions, 14072 events. 9900/14072 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 80656 event pairs, 4704 based on Foata normal form. 6/13977 useless extension candidates. Maximal degree in co-relation 50568. Up to 13450 conditions per place. [2024-06-27 19:49:01,261 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 80 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-27 19:49:01,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 877 flow [2024-06-27 19:49:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:49:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:49:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 19:49:01,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-27 19:49:01,264 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 647 flow. Second operand 5 states and 133 transitions. [2024-06-27 19:49:01,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 877 flow [2024-06-27 19:49:01,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 780 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:49:01,294 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 590 flow [2024-06-27 19:49:01,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 19:49:01,298 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-27 19:49:01,298 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 590 flow [2024-06-27 19:49:01,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:01,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:49:01,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:01,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -877015526, now seen corresponding path program 1 times [2024-06-27 19:49:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:01,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805098653] [2024-06-27 19:49:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:01,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:02,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:02,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805098653] [2024-06-27 19:49:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805098653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:02,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:02,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684946871] [2024-06-27 19:49:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:02,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:02,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:02,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:02,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 590 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:02,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:02,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:02,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:03,869 INFO L124 PetriNetUnfolderBase]: 9926/14091 cut-off events. [2024-06-27 19:49:03,870 INFO L125 PetriNetUnfolderBase]: For 48818/48818 co-relation queries the response was YES. [2024-06-27 19:49:03,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51139 conditions, 14091 events. 9926/14091 cut-off events. For 48818/48818 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 80610 event pairs, 4443 based on Foata normal form. 12/13996 useless extension candidates. Maximal degree in co-relation 51110. Up to 13297 conditions per place. [2024-06-27 19:49:03,989 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 87 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-27 19:49:03,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 978 flow [2024-06-27 19:49:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 19:49:03,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2024-06-27 19:49:03,993 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 590 flow. Second operand 6 states and 169 transitions. [2024-06-27 19:49:03,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 978 flow [2024-06-27 19:49:04,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 937 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:04,026 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 658 flow [2024-06-27 19:49:04,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=74, 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=658, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-06-27 19:49:04,027 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-27 19:49:04,027 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 658 flow [2024-06-27 19:49:04,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:04,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:04,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:04,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:49:04,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash -212622596, now seen corresponding path program 2 times [2024-06-27 19:49:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324180362] [2024-06-27 19:49:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:04,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:04,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:04,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324180362] [2024-06-27 19:49:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324180362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423719013] [2024-06-27 19:49:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:05,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:05,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:05,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:05,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:05,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:06,782 INFO L124 PetriNetUnfolderBase]: 9881/14030 cut-off events. [2024-06-27 19:49:06,782 INFO L125 PetriNetUnfolderBase]: For 55448/55448 co-relation queries the response was YES. [2024-06-27 19:49:06,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52064 conditions, 14030 events. 9881/14030 cut-off events. For 55448/55448 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 80225 event pairs, 4668 based on Foata normal form. 6/13931 useless extension candidates. Maximal degree in co-relation 52035. Up to 13405 conditions per place. [2024-06-27 19:49:06,889 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 91 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-27 19:49:06,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 934 flow [2024-06-27 19:49:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-27 19:49:06,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968553459119497 [2024-06-27 19:49:06,894 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 658 flow. Second operand 6 states and 158 transitions. [2024-06-27 19:49:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 934 flow [2024-06-27 19:49:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 891 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:06,931 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 654 flow [2024-06-27 19:49:06,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-06-27 19:49:06,933 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-27 19:49:06,934 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 654 flow [2024-06-27 19:49:06,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:06,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:06,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:49:06,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:06,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1240298484, now seen corresponding path program 1 times [2024-06-27 19:49:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121389930] [2024-06-27 19:49:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121389930] [2024-06-27 19:49:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121389930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190072280] [2024-06-27 19:49:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:08,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:09,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:09,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 654 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:09,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:09,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:09,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:10,971 INFO L124 PetriNetUnfolderBase]: 11993/16977 cut-off events. [2024-06-27 19:49:10,971 INFO L125 PetriNetUnfolderBase]: For 74314/74314 co-relation queries the response was YES. [2024-06-27 19:49:11,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62711 conditions, 16977 events. 11993/16977 cut-off events. For 74314/74314 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 97317 event pairs, 5700 based on Foata normal form. 6/16817 useless extension candidates. Maximal degree in co-relation 62681. Up to 16196 conditions per place. [2024-06-27 19:49:11,120 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 100 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-27 19:49:11,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 1047 flow [2024-06-27 19:49:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 19:49:11,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-27 19:49:11,123 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 654 flow. Second operand 7 states and 177 transitions. [2024-06-27 19:49:11,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 1047 flow [2024-06-27 19:49:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 977 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:11,194 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 718 flow [2024-06-27 19:49:11,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-06-27 19:49:11,195 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-27 19:49:11,195 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 718 flow [2024-06-27 19:49:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:11,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:11,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:11,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:49:11,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:11,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2108077532, now seen corresponding path program 1 times [2024-06-27 19:49:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487441928] [2024-06-27 19:49:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:11,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487441928] [2024-06-27 19:49:11,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487441928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:11,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:11,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:49:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456745964] [2024-06-27 19:49:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:11,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:49:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:49:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:49:12,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:12,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:12,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:12,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:12,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:13,975 INFO L124 PetriNetUnfolderBase]: 14422/20065 cut-off events. [2024-06-27 19:49:13,975 INFO L125 PetriNetUnfolderBase]: For 104188/104188 co-relation queries the response was YES. [2024-06-27 19:49:14,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78001 conditions, 20065 events. 14422/20065 cut-off events. For 104188/104188 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 111415 event pairs, 7127 based on Foata normal form. 2/20064 useless extension candidates. Maximal degree in co-relation 77970. Up to 19481 conditions per place. [2024-06-27 19:49:14,137 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 97 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2024-06-27 19:49:14,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 113 transitions, 1006 flow [2024-06-27 19:49:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:49:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:49:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 19:49:14,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-27 19:49:14,139 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 718 flow. Second operand 5 states and 120 transitions. [2024-06-27 19:49:14,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 113 transitions, 1006 flow [2024-06-27 19:49:14,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 946 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:14,218 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 733 flow [2024-06-27 19:49:14,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=733, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-27 19:49:14,219 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-27 19:49:14,219 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 733 flow [2024-06-27 19:49:14,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:14,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:14,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:49:14,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:14,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1002099335, now seen corresponding path program 1 times [2024-06-27 19:49:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980768143] [2024-06-27 19:49:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:15,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980768143] [2024-06-27 19:49:15,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980768143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:15,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:15,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:49:15,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873349488] [2024-06-27 19:49:15,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:15,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:49:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:49:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:49:15,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:15,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:15,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:15,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:15,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:17,675 INFO L124 PetriNetUnfolderBase]: 13306/18798 cut-off events. [2024-06-27 19:49:17,675 INFO L125 PetriNetUnfolderBase]: For 124929/124937 co-relation queries the response was YES. [2024-06-27 19:49:17,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77827 conditions, 18798 events. 13306/18798 cut-off events. For 124929/124937 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 109818 event pairs, 5816 based on Foata normal form. 10/18727 useless extension candidates. Maximal degree in co-relation 77795. Up to 17483 conditions per place. [2024-06-27 19:49:17,789 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 95 selfloop transitions, 48 changer transitions 0/153 dead transitions. [2024-06-27 19:49:17,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 153 transitions, 1335 flow [2024-06-27 19:49:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-27 19:49:17,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444743935309974 [2024-06-27 19:49:17,790 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 733 flow. Second operand 7 states and 202 transitions. [2024-06-27 19:49:17,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 153 transitions, 1335 flow [2024-06-27 19:49:17,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 1290 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:17,838 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 883 flow [2024-06-27 19:49:17,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=883, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-27 19:49:17,838 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-27 19:49:17,838 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 883 flow [2024-06-27 19:49:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:17,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:17,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:49:17,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:17,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1002009125, now seen corresponding path program 2 times [2024-06-27 19:49:17,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:17,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529877102] [2024-06-27 19:49:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529877102] [2024-06-27 19:49:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529877102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:49:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115418321] [2024-06-27 19:49:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:49:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:49:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:49:19,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:19,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 883 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:19,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:19,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:19,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:21,429 INFO L124 PetriNetUnfolderBase]: 13288/18774 cut-off events. [2024-06-27 19:49:21,429 INFO L125 PetriNetUnfolderBase]: For 149831/149839 co-relation queries the response was YES. [2024-06-27 19:49:21,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82248 conditions, 18774 events. 13288/18774 cut-off events. For 149831/149839 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 109829 event pairs, 5918 based on Foata normal form. 10/18703 useless extension candidates. Maximal degree in co-relation 82215. Up to 17568 conditions per place. [2024-06-27 19:49:21,601 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 95 selfloop transitions, 42 changer transitions 0/147 dead transitions. [2024-06-27 19:49:21,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1327 flow [2024-06-27 19:49:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 19:49:21,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 19:49:21,603 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 883 flow. Second operand 7 states and 196 transitions. [2024-06-27 19:49:21,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1327 flow [2024-06-27 19:49:21,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1231 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:21,733 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 882 flow [2024-06-27 19:49:21,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=882, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-06-27 19:49:21,733 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-27 19:49:21,734 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 882 flow [2024-06-27 19:49:21,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:21,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:21,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:21,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:49:21,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:21,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash -530477395, now seen corresponding path program 1 times [2024-06-27 19:49:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501721904] [2024-06-27 19:49:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:23,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501721904] [2024-06-27 19:49:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501721904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:23,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:23,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791080960] [2024-06-27 19:49:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:23,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:23,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:23,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:23,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:23,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:23,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:25,516 INFO L124 PetriNetUnfolderBase]: 13689/19293 cut-off events. [2024-06-27 19:49:25,517 INFO L125 PetriNetUnfolderBase]: For 168251/168251 co-relation queries the response was YES. [2024-06-27 19:49:25,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86153 conditions, 19293 events. 13689/19293 cut-off events. For 168251/168251 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 110614 event pairs, 6427 based on Foata normal form. 3/19238 useless extension candidates. Maximal degree in co-relation 86118. Up to 18299 conditions per place. [2024-06-27 19:49:25,663 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 110 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2024-06-27 19:49:25,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 143 transitions, 1283 flow [2024-06-27 19:49:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 19:49:25,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-27 19:49:25,665 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 882 flow. Second operand 7 states and 178 transitions. [2024-06-27 19:49:25,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 143 transitions, 1283 flow [2024-06-27 19:49:25,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1200 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:49:25,757 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 920 flow [2024-06-27 19:49:25,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-27 19:49:25,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-27 19:49:25,758 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 920 flow [2024-06-27 19:49:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:25,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:25,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:25,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:49:25,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:25,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash -925892868, now seen corresponding path program 1 times [2024-06-27 19:49:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902748589] [2024-06-27 19:49:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902748589] [2024-06-27 19:49:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902748589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:26,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378066928] [2024-06-27 19:49:26,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:26,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:26,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 920 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:28,992 INFO L124 PetriNetUnfolderBase]: 14482/20162 cut-off events. [2024-06-27 19:49:28,992 INFO L125 PetriNetUnfolderBase]: For 192024/192024 co-relation queries the response was YES. [2024-06-27 19:49:29,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90152 conditions, 20162 events. 14482/20162 cut-off events. For 192024/192024 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 112528 event pairs, 6916 based on Foata normal form. 4/20163 useless extension candidates. Maximal degree in co-relation 90116. Up to 19547 conditions per place. [2024-06-27 19:49:29,119 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 114 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2024-06-27 19:49:29,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 1270 flow [2024-06-27 19:49:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 19:49:29,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-27 19:49:29,120 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 920 flow. Second operand 6 states and 141 transitions. [2024-06-27 19:49:29,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 1270 flow [2024-06-27 19:49:29,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 1173 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:49:29,214 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 914 flow [2024-06-27 19:49:29,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=914, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2024-06-27 19:49:29,215 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-27 19:49:29,215 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 914 flow [2024-06-27 19:49:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:29,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:29,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:29,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:49:29,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:29,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:29,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1000309779, now seen corresponding path program 1 times [2024-06-27 19:49:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:29,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617445781] [2024-06-27 19:49:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:29,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617445781] [2024-06-27 19:49:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617445781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:30,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:30,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417480038] [2024-06-27 19:49:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:30,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:30,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:30,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:30,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:30,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:30,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:32,955 INFO L124 PetriNetUnfolderBase]: 13617/19335 cut-off events. [2024-06-27 19:49:32,956 INFO L125 PetriNetUnfolderBase]: For 226031/226039 co-relation queries the response was YES. [2024-06-27 19:49:33,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92359 conditions, 19335 events. 13617/19335 cut-off events. For 226031/226039 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 114113 event pairs, 3955 based on Foata normal form. 28/19262 useless extension candidates. Maximal degree in co-relation 92322. Up to 17125 conditions per place. [2024-06-27 19:49:33,088 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 113 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2024-06-27 19:49:33,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 180 transitions, 1658 flow [2024-06-27 19:49:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-06-27 19:49:33,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-27 19:49:33,090 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 914 flow. Second operand 8 states and 232 transitions. [2024-06-27 19:49:33,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 180 transitions, 1658 flow [2024-06-27 19:49:33,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1597 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:33,197 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 1052 flow [2024-06-27 19:49:33,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1052, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-06-27 19:49:33,198 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-27 19:49:33,198 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 1052 flow [2024-06-27 19:49:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:33,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:33,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:49:33,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:33,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1901540641, now seen corresponding path program 2 times [2024-06-27 19:49:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:33,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408141866] [2024-06-27 19:49:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:34,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408141866] [2024-06-27 19:49:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408141866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:34,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:34,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296688399] [2024-06-27 19:49:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:34,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:34,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:34,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 1052 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:34,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:34,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:34,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:37,056 INFO L124 PetriNetUnfolderBase]: 13783/19601 cut-off events. [2024-06-27 19:49:37,056 INFO L125 PetriNetUnfolderBase]: For 259206/259214 co-relation queries the response was YES. [2024-06-27 19:49:37,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96916 conditions, 19601 events. 13783/19601 cut-off events. For 259206/259214 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 116351 event pairs, 5155 based on Foata normal form. 34/19556 useless extension candidates. Maximal degree in co-relation 96878. Up to 17938 conditions per place. [2024-06-27 19:49:37,218 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 113 selfloop transitions, 53 changer transitions 0/176 dead transitions. [2024-06-27 19:49:37,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 176 transitions, 1664 flow [2024-06-27 19:49:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 19:49:37,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535377358490566 [2024-06-27 19:49:37,220 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 1052 flow. Second operand 8 states and 227 transitions. [2024-06-27 19:49:37,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 176 transitions, 1664 flow [2024-06-27 19:49:37,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 176 transitions, 1586 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:37,362 INFO L231 Difference]: Finished difference. Result has 103 places, 121 transitions, 1134 flow [2024-06-27 19:49:37,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=103, PETRI_TRANSITIONS=121} [2024-06-27 19:49:37,363 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-27 19:49:37,363 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 121 transitions, 1134 flow [2024-06-27 19:49:37,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:49:37,364 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:37,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -886687959, now seen corresponding path program 3 times [2024-06-27 19:49:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513985196] [2024-06-27 19:49:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:38,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:38,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513985196] [2024-06-27 19:49:38,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513985196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:38,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:38,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800376538] [2024-06-27 19:49:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:38,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:38,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:38,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:49:38,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 121 transitions, 1134 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:38,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:38,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:49:38,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:41,254 INFO L124 PetriNetUnfolderBase]: 13908/19746 cut-off events. [2024-06-27 19:49:41,254 INFO L125 PetriNetUnfolderBase]: For 287392/287392 co-relation queries the response was YES. [2024-06-27 19:49:41,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99366 conditions, 19746 events. 13908/19746 cut-off events. For 287392/287392 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 116920 event pairs, 5186 based on Foata normal form. 60/19697 useless extension candidates. Maximal degree in co-relation 99326. Up to 18108 conditions per place. [2024-06-27 19:49:41,430 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 124 selfloop transitions, 40 changer transitions 0/174 dead transitions. [2024-06-27 19:49:41,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1654 flow [2024-06-27 19:49:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 19:49:41,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-06-27 19:49:41,433 INFO L175 Difference]: Start difference. First operand has 103 places, 121 transitions, 1134 flow. Second operand 8 states and 222 transitions. [2024-06-27 19:49:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1654 flow [2024-06-27 19:49:41,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 174 transitions, 1516 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:41,651 INFO L231 Difference]: Finished difference. Result has 105 places, 124 transitions, 1142 flow [2024-06-27 19:49:41,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1142, PETRI_PLACES=105, PETRI_TRANSITIONS=124} [2024-06-27 19:49:41,652 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-27 19:49:41,652 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 124 transitions, 1142 flow [2024-06-27 19:49:41,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:41,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:41,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:49:41,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:41,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2026628661, now seen corresponding path program 1 times [2024-06-27 19:49:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326716711] [2024-06-27 19:49:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326716711] [2024-06-27 19:49:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326716711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:42,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:42,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018806720] [2024-06-27 19:49:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:42,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:42,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:42,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 1142 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:42,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:42,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:45,127 INFO L124 PetriNetUnfolderBase]: 15073/21052 cut-off events. [2024-06-27 19:49:45,127 INFO L125 PetriNetUnfolderBase]: For 306050/306056 co-relation queries the response was YES. [2024-06-27 19:49:45,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106356 conditions, 21052 events. 15073/21052 cut-off events. For 306050/306056 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 118590 event pairs, 6758 based on Foata normal form. 6/21054 useless extension candidates. Maximal degree in co-relation 106315. Up to 20406 conditions per place. [2024-06-27 19:49:45,300 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 131 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2024-06-27 19:49:45,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 158 transitions, 1684 flow [2024-06-27 19:49:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:49:45,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-27 19:49:45,301 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 1142 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:49:45,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 158 transitions, 1684 flow [2024-06-27 19:49:45,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 158 transitions, 1580 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:45,505 INFO L231 Difference]: Finished difference. Result has 105 places, 132 transitions, 1201 flow [2024-06-27 19:49:45,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1201, PETRI_PLACES=105, PETRI_TRANSITIONS=132} [2024-06-27 19:49:45,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-27 19:49:45,506 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 132 transitions, 1201 flow [2024-06-27 19:49:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:45,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:45,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:49:45,507 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:45,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1837631565, now seen corresponding path program 1 times [2024-06-27 19:49:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:45,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877722072] [2024-06-27 19:49:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877722072] [2024-06-27 19:49:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877722072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:47,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:47,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846590280] [2024-06-27 19:49:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:47,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:47,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 132 transitions, 1201 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:47,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:47,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:47,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:50,432 INFO L124 PetriNetUnfolderBase]: 14347/20341 cut-off events. [2024-06-27 19:49:50,432 INFO L125 PetriNetUnfolderBase]: For 344687/344687 co-relation queries the response was YES. [2024-06-27 19:49:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107993 conditions, 20341 events. 14347/20341 cut-off events. For 344687/344687 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 118421 event pairs, 6171 based on Foata normal form. 6/20237 useless extension candidates. Maximal degree in co-relation 107951. Up to 19189 conditions per place. [2024-06-27 19:49:50,584 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 142 selfloop transitions, 28 changer transitions 0/180 dead transitions. [2024-06-27 19:49:50,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1745 flow [2024-06-27 19:49:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 19:49:50,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-27 19:49:50,586 INFO L175 Difference]: Start difference. First operand has 105 places, 132 transitions, 1201 flow. Second operand 8 states and 204 transitions. [2024-06-27 19:49:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1745 flow [2024-06-27 19:49:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 180 transitions, 1691 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 19:49:50,765 INFO L231 Difference]: Finished difference. Result has 112 places, 139 transitions, 1327 flow [2024-06-27 19:49:50,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=112, PETRI_TRANSITIONS=139} [2024-06-27 19:49:50,766 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-27 19:49:50,766 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 139 transitions, 1327 flow [2024-06-27 19:49:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:50,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:50,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:50,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:49:50,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:50,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2073806925, now seen corresponding path program 2 times [2024-06-27 19:49:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:50,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184058218] [2024-06-27 19:49:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184058218] [2024-06-27 19:49:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184058218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296784753] [2024-06-27 19:49:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:52,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:52,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 139 transitions, 1327 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:52,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:52,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:52,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:55,403 INFO L124 PetriNetUnfolderBase]: 14383/20393 cut-off events. [2024-06-27 19:49:55,403 INFO L125 PetriNetUnfolderBase]: For 386621/386621 co-relation queries the response was YES. [2024-06-27 19:49:55,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112836 conditions, 20393 events. 14383/20393 cut-off events. For 386621/386621 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 118679 event pairs, 6179 based on Foata normal form. 6/20289 useless extension candidates. Maximal degree in co-relation 112791. Up to 19248 conditions per place. [2024-06-27 19:49:55,560 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 144 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2024-06-27 19:49:55,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 182 transitions, 1837 flow [2024-06-27 19:49:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 19:49:55,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47641509433962265 [2024-06-27 19:49:55,562 INFO L175 Difference]: Start difference. First operand has 112 places, 139 transitions, 1327 flow. Second operand 8 states and 202 transitions. [2024-06-27 19:49:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 182 transitions, 1837 flow [2024-06-27 19:49:55,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 182 transitions, 1727 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 19:49:55,873 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1352 flow [2024-06-27 19:49:55,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1352, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-06-27 19:49:55,874 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-27 19:49:55,874 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1352 flow [2024-06-27 19:49:55,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:55,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:55,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:55,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:49:55,875 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:55,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2073806677, now seen corresponding path program 1 times [2024-06-27 19:49:55,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550613662] [2024-06-27 19:49:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550613662] [2024-06-27 19:49:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550613662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:57,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717759097] [2024-06-27 19:49:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:57,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1352 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:00,072 INFO L124 PetriNetUnfolderBase]: 14338/20322 cut-off events. [2024-06-27 19:50:00,072 INFO L125 PetriNetUnfolderBase]: For 426459/426469 co-relation queries the response was YES. [2024-06-27 19:50:00,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115673 conditions, 20322 events. 14338/20322 cut-off events. For 426459/426469 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 118010 event pairs, 5602 based on Foata normal form. 7/20216 useless extension candidates. Maximal degree in co-relation 115627. Up to 18918 conditions per place. [2024-06-27 19:50:00,234 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 119 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2024-06-27 19:50:00,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 176 transitions, 1782 flow [2024-06-27 19:50:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 19:50:00,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 19:50:00,236 INFO L175 Difference]: Start difference. First operand has 115 places, 142 transitions, 1352 flow. Second operand 6 states and 168 transitions. [2024-06-27 19:50:00,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 176 transitions, 1782 flow [2024-06-27 19:50:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 1667 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 19:50:00,641 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1352 flow [2024-06-27 19:50:00,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1352, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-06-27 19:50:00,642 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-27 19:50:00,642 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1352 flow [2024-06-27 19:50:00,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:00,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:00,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:00,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:50:00,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:50:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 844938171, now seen corresponding path program 3 times [2024-06-27 19:50:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809582050] [2024-06-27 19:50:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:00,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:01,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809582050] [2024-06-27 19:50:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809582050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:01,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:01,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:50:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108285032] [2024-06-27 19:50:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:50:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:50:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:50:02,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:50:02,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:02,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:02,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:50:02,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:05,137 INFO L124 PetriNetUnfolderBase]: 14323/20297 cut-off events. [2024-06-27 19:50:05,137 INFO L125 PetriNetUnfolderBase]: For 454938/454938 co-relation queries the response was YES. [2024-06-27 19:50:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117026 conditions, 20297 events. 14323/20297 cut-off events. For 454938/454938 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 117852 event pairs, 6042 based on Foata normal form. 6/20193 useless extension candidates. Maximal degree in co-relation 116979. Up to 19167 conditions per place. [2024-06-27 19:50:05,315 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 152 selfloop transitions, 23 changer transitions 0/185 dead transitions. [2024-06-27 19:50:05,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 185 transitions, 1872 flow [2024-06-27 19:50:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:50:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:50:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 19:50:05,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740566037735849 [2024-06-27 19:50:05,317 INFO L175 Difference]: Start difference. First operand has 115 places, 142 transitions, 1352 flow. Second operand 8 states and 201 transitions. [2024-06-27 19:50:05,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 185 transitions, 1872 flow [2024-06-27 19:50:05,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 185 transitions, 1778 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 19:50:05,543 INFO L231 Difference]: Finished difference. Result has 118 places, 145 transitions, 1388 flow [2024-06-27 19:50:05,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=118, PETRI_TRANSITIONS=145} [2024-06-27 19:50:05,543 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-27 19:50:05,543 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 145 transitions, 1388 flow [2024-06-27 19:50:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:05,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:05,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:50:05,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:50:05,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:05,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1573935645, now seen corresponding path program 2 times [2024-06-27 19:50:05,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:05,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932633204] [2024-06-27 19:50:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932633204] [2024-06-27 19:50:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932633204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:06,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456899412] [2024-06-27 19:50:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:06,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:50:06,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 145 transitions, 1388 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:06,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:06,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:50:06,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:09,599 INFO L124 PetriNetUnfolderBase]: 15078/21050 cut-off events. [2024-06-27 19:50:09,599 INFO L125 PetriNetUnfolderBase]: For 495463/495463 co-relation queries the response was YES. [2024-06-27 19:50:09,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 21050 events. 15078/21050 cut-off events. For 495463/495463 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 118394 event pairs, 6753 based on Foata normal form. 2/21049 useless extension candidates. Maximal degree in co-relation 121915. Up to 20437 conditions per place. [2024-06-27 19:50:09,789 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 143 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-06-27 19:50:09,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 163 transitions, 1748 flow [2024-06-27 19:50:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 19:50:09,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2024-06-27 19:50:09,790 INFO L175 Difference]: Start difference. First operand has 118 places, 145 transitions, 1388 flow. Second operand 6 states and 140 transitions. [2024-06-27 19:50:09,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 163 transitions, 1748 flow [2024-06-27 19:50:10,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 163 transitions, 1616 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 19:50:10,088 INFO L231 Difference]: Finished difference. Result has 118 places, 145 transitions, 1293 flow [2024-06-27 19:50:10,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1293, PETRI_PLACES=118, PETRI_TRANSITIONS=145} [2024-06-27 19:50:10,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-27 19:50:10,089 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 145 transitions, 1293 flow [2024-06-27 19:50:10,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:10,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:10,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:10,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:50:10,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:50:10,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2026813173, now seen corresponding path program 1 times [2024-06-27 19:50:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:10,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837539941] [2024-06-27 19:50:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837539941] [2024-06-27 19:50:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837539941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:10,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384244122] [2024-06-27 19:50:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:11,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:50:11,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 145 transitions, 1293 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:11,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:11,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:50:11,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand