./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix004.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/mix004.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix004.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:11:06,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:11:06,859 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:11:06,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:11:06,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:11:06,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:11:06,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:11:06,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:11:06,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:11:06,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:11:06,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:11:06,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:11:06,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:11:06,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:11:06,879 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:11:06,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:11:06,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:11:06,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:11:06,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:11:06,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:11:06,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:11:06,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:11:06,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:11:06,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:11:06,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:11:06,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:11:06,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:11:06,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:11:06,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:11:06,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:11:06,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:11:06,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:11:06,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:11:06,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:11:06,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:11:06,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:11:06,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:11:06,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:11:06,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:11:06,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:11:06,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:11:06,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:11:06,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:11:06,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:11:07,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:11:07,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:11:07,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:11:07,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:11:07,137 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:11:07,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-06-27 18:11:08,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:11:08,355 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:11:08,356 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-06-27 18:11:08,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09004ee9/6459cb9285804ebebe678c9b81ffce29/FLAG78e6ba086 [2024-06-27 18:11:08,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09004ee9/6459cb9285804ebebe678c9b81ffce29 [2024-06-27 18:11:08,385 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:11:08,386 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:11:08,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix004.oepc.yml/witness.yml [2024-06-27 18:11:08,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:11:08,552 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:11:08,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:11:08,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:11:08,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:11:08,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:11:08" (1/2) ... [2024-06-27 18:11:08,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbb083c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:11:08, skipping insertion in model container [2024-06-27 18:11:08,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:11:08" (1/2) ... [2024-06-27 18:11:08,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7be50710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:11:08, skipping insertion in model container [2024-06-27 18:11:08,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:11:08" (2/2) ... [2024-06-27 18:11:08,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbb083c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:11:08, skipping insertion in model container [2024-06-27 18:11:08,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:11:08" (2/2) ... [2024-06-27 18:11:08,562 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:11:08,662 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:11:08,663 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:11:08,663 INFO L97 edCorrectnessWitness]: Location invariant before [L881-L881] ((((((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:11:08,663 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:11:08,664 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:11:08,664 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:11:08,664 INFO L106 edCorrectnessWitness]: ghost_update [L874-L874] multithreaded = 1; [2024-06-27 18:11:08,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:11:08,840 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i[945,958] [2024-06-27 18:11:09,045 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:11:09,072 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:11:09,098 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:11:09,196 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:11:09,224 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:11:09,224 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:11:09 WrapperNode [2024-06-27 18:11:09,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:11:09,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:11:09,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:11:09,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:11:09,232 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,266 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,305 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2024-06-27 18:11:09,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:11:09,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:11:09,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:11:09,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:11:09,315 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,316 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,330 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,353 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:11:09,356 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,356 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,368 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,389 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,391 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,396 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:11:09,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:11:09,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:11:09,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:11:09,405 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 06:11:09" (1/1) ... [2024-06-27 18:11:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:11:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:11:09,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:11:09,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:11:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:11:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:11:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:11:09,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:11:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:11:09,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:11:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:11:09,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:11:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:11:09,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:11:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:11:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:11:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:11:09,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:11:09,472 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:11:09,586 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:11:09,588 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:11:09,904 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:11:09,905 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:11:10,066 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:11:10,066 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:11:10,066 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:11:10 BoogieIcfgContainer [2024-06-27 18:11:10,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:11:10,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:11:10,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:11:10,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:11:10,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:11:08" (1/4) ... [2024-06-27 18:11:10,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42632283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:11:10, skipping insertion in model container [2024-06-27 18:11:10,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:11:08" (2/4) ... [2024-06-27 18:11:10,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42632283 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:11:10, skipping insertion in model container [2024-06-27 18:11:10,073 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 06:11:09" (3/4) ... [2024-06-27 18:11:10,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42632283 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:11:10, skipping insertion in model container [2024-06-27 18:11:10,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:11:10" (4/4) ... [2024-06-27 18:11:10,074 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2024-06-27 18:11:10,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:11:10,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:11:10,088 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:11:10,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:11:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:11:10,193 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 18:11:10,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:11:10,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-27 18:11:10,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:11:10,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 18:11:10,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:11:10,213 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;@6cec7ffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:11:10,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:11:10,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:11:10,217 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:11:10,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:11:10,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:10,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:11:10,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:10,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 385152244, now seen corresponding path program 1 times [2024-06-27 18:11:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11402664] [2024-06-27 18:11:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11402664] [2024-06-27 18:11:11,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11402664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:11,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:11,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:11:11,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51607469] [2024-06-27 18:11:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:11:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:11:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:11:11,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-27 18:11:11,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:11,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:11,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-27 18:11:11,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:14,255 INFO L124 PetriNetUnfolderBase]: 21343/31916 cut-off events. [2024-06-27 18:11:14,255 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 18:11:14,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60680 conditions, 31916 events. 21343/31916 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 227203 event pairs, 17311 based on Foata normal form. 751/30311 useless extension candidates. Maximal degree in co-relation 60667. Up to 28369 conditions per place. [2024-06-27 18:11:14,476 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 51 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 18:11:14,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 281 flow [2024-06-27 18:11:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:11:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:11:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-06-27 18:11:14,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-06-27 18:11:14,488 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 123 transitions. [2024-06-27 18:11:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 281 flow [2024-06-27 18:11:14,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:11:14,497 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-27 18:11:14,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-27 18:11:14,502 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:11:14,502 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-27 18:11:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:14,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:14,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:11:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:11:14,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:14,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash 385152899, now seen corresponding path program 1 times [2024-06-27 18:11:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:14,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149857667] [2024-06-27 18:11:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149857667] [2024-06-27 18:11:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149857667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:11:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419074339] [2024-06-27 18:11:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:14,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:11:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:11:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:11:14,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-06-27 18:11:14,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:14,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:14,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-06-27 18:11:14,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:15,531 INFO L124 PetriNetUnfolderBase]: 5221/9274 cut-off events. [2024-06-27 18:11:15,532 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-27 18:11:15,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17574 conditions, 9274 events. 5221/9274 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 74368 event pairs, 3401 based on Foata normal form. 0/8465 useless extension candidates. Maximal degree in co-relation 17562. Up to 6080 conditions per place. [2024-06-27 18:11:15,606 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-06-27 18:11:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 297 flow [2024-06-27 18:11:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:11:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:11:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-06-27 18:11:15,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966101694915254 [2024-06-27 18:11:15,613 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 141 transitions. [2024-06-27 18:11:15,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 297 flow [2024-06-27 18:11:15,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:11:15,616 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-06-27 18:11:15,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-27 18:11:15,618 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:11:15,620 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-06-27 18:11:15,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:15,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:15,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:11:15,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:15,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash 764741258, now seen corresponding path program 1 times [2024-06-27 18:11:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63588165] [2024-06-27 18:11:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:16,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:16,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63588165] [2024-06-27 18:11:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63588165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:16,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:16,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:11:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831354906] [2024-06-27 18:11:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:16,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:11:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:11:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:11:16,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-27 18:11:16,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:16,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:16,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-27 18:11:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:18,484 INFO L124 PetriNetUnfolderBase]: 17593/26391 cut-off events. [2024-06-27 18:11:18,485 INFO L125 PetriNetUnfolderBase]: For 6553/6553 co-relation queries the response was YES. [2024-06-27 18:11:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56597 conditions, 26391 events. 17593/26391 cut-off events. For 6553/6553 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 182963 event pairs, 12193 based on Foata normal form. 4/25563 useless extension candidates. Maximal degree in co-relation 56584. Up to 23421 conditions per place. [2024-06-27 18:11:18,620 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 63 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-06-27 18:11:18,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 400 flow [2024-06-27 18:11:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:11:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:11:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-27 18:11:18,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2024-06-27 18:11:18,622 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 155 transitions. [2024-06-27 18:11:18,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 400 flow [2024-06-27 18:11:18,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:11:18,625 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-06-27 18:11:18,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-27 18:11:18,626 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 18:11:18,626 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-06-27 18:11:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:18,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:18,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:11:18,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:18,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 476989897, now seen corresponding path program 1 times [2024-06-27 18:11:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090544258] [2024-06-27 18:11:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:19,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:19,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090544258] [2024-06-27 18:11:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090544258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:11:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025822072] [2024-06-27 18:11:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:11:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:11:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:11:19,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:11:19,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:19,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:19,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:11:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:21,807 INFO L124 PetriNetUnfolderBase]: 18391/25891 cut-off events. [2024-06-27 18:11:21,807 INFO L125 PetriNetUnfolderBase]: For 12936/12936 co-relation queries the response was YES. [2024-06-27 18:11:21,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62610 conditions, 25891 events. 18391/25891 cut-off events. For 12936/12936 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 163926 event pairs, 9778 based on Foata normal form. 4/25657 useless extension candidates. Maximal degree in co-relation 62595. Up to 24423 conditions per place. [2024-06-27 18:11:21,971 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 88 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-27 18:11:21,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 682 flow [2024-06-27 18:11:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-27 18:11:21,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6299435028248588 [2024-06-27 18:11:21,973 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 223 transitions. [2024-06-27 18:11:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 682 flow [2024-06-27 18:11:21,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 658 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:11:21,981 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 394 flow [2024-06-27 18:11:21,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 18:11:21,982 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-27 18:11:21,982 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 394 flow [2024-06-27 18:11:21,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:21,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:21,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:11:21,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:21,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1904165082, now seen corresponding path program 1 times [2024-06-27 18:11:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682090934] [2024-06-27 18:11:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:21,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:23,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:23,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682090934] [2024-06-27 18:11:23,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682090934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:23,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:23,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769318390] [2024-06-27 18:11:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:23,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:23,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:23,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:11:23,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:23,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:23,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:11:23,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:25,815 INFO L124 PetriNetUnfolderBase]: 18394/28017 cut-off events. [2024-06-27 18:11:25,816 INFO L125 PetriNetUnfolderBase]: For 27883/27883 co-relation queries the response was YES. [2024-06-27 18:11:25,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72206 conditions, 28017 events. 18394/28017 cut-off events. For 27883/27883 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 199451 event pairs, 9063 based on Foata normal form. 8/27037 useless extension candidates. Maximal degree in co-relation 72187. Up to 24380 conditions per place. [2024-06-27 18:11:26,056 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 112 selfloop transitions, 21 changer transitions 0/148 dead transitions. [2024-06-27 18:11:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 148 transitions, 872 flow [2024-06-27 18:11:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-06-27 18:11:26,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6150121065375302 [2024-06-27 18:11:26,062 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 394 flow. Second operand 7 states and 254 transitions. [2024-06-27 18:11:26,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 148 transitions, 872 flow [2024-06-27 18:11:26,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 148 transitions, 827 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 18:11:26,080 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 481 flow [2024-06-27 18:11:26,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 18:11:26,083 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-06-27 18:11:26,083 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 481 flow [2024-06-27 18:11:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:11:26,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:26,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 982881405, now seen corresponding path program 1 times [2024-06-27 18:11:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937191277] [2024-06-27 18:11:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937191277] [2024-06-27 18:11:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937191277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:26,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:11:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052134194] [2024-06-27 18:11:26,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:11:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:11:26,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:11:26,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:29,943 INFO L124 PetriNetUnfolderBase]: 21316/32247 cut-off events. [2024-06-27 18:11:29,943 INFO L125 PetriNetUnfolderBase]: For 47432/47432 co-relation queries the response was YES. [2024-06-27 18:11:30,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87487 conditions, 32247 events. 21316/32247 cut-off events. For 47432/47432 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 231174 event pairs, 11387 based on Foata normal form. 6/31417 useless extension candidates. Maximal degree in co-relation 87463. Up to 28280 conditions per place. [2024-06-27 18:11:30,175 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 89 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-27 18:11:30,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 775 flow [2024-06-27 18:11:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:11:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:11:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 18:11:30,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-06-27 18:11:30,177 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 481 flow. Second operand 5 states and 160 transitions. [2024-06-27 18:11:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 775 flow [2024-06-27 18:11:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 726 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:11:30,193 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 506 flow [2024-06-27 18:11:30,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-06-27 18:11:30,196 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-06-27 18:11:30,196 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 506 flow [2024-06-27 18:11:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:30,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:30,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:11:30,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:30,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1956011083, now seen corresponding path program 1 times [2024-06-27 18:11:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559541796] [2024-06-27 18:11:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:30,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:30,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559541796] [2024-06-27 18:11:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559541796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:30,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637491525] [2024-06-27 18:11:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:30,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:31,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:31,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:31,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:31,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:31,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:33,726 INFO L124 PetriNetUnfolderBase]: 21446/32280 cut-off events. [2024-06-27 18:11:33,727 INFO L125 PetriNetUnfolderBase]: For 63740/63740 co-relation queries the response was YES. [2024-06-27 18:11:33,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93757 conditions, 32280 events. 21446/32280 cut-off events. For 63740/63740 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 227415 event pairs, 10120 based on Foata normal form. 6/31361 useless extension candidates. Maximal degree in co-relation 93731. Up to 28354 conditions per place. [2024-06-27 18:11:33,968 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 110 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-27 18:11:33,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1009 flow [2024-06-27 18:11:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-06-27 18:11:33,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649717514124294 [2024-06-27 18:11:33,970 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 506 flow. Second operand 6 states and 200 transitions. [2024-06-27 18:11:33,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1009 flow [2024-06-27 18:11:33,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 948 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:11:33,985 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 633 flow [2024-06-27 18:11:33,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-06-27 18:11:33,986 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-06-27 18:11:33,986 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 633 flow [2024-06-27 18:11:33,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:33,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:33,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:33,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:11:33,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:33,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 286329245, now seen corresponding path program 2 times [2024-06-27 18:11:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115247405] [2024-06-27 18:11:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115247405] [2024-06-27 18:11:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115247405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:34,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496335096] [2024-06-27 18:11:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:34,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:34,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:34,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:34,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:34,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:37,679 INFO L124 PetriNetUnfolderBase]: 21428/32386 cut-off events. [2024-06-27 18:11:37,679 INFO L125 PetriNetUnfolderBase]: For 89336/89336 co-relation queries the response was YES. [2024-06-27 18:11:37,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102086 conditions, 32386 events. 21428/32386 cut-off events. For 89336/89336 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 231749 event pairs, 11086 based on Foata normal form. 6/31567 useless extension candidates. Maximal degree in co-relation 102058. Up to 28412 conditions per place. [2024-06-27 18:11:37,925 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 108 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-06-27 18:11:37,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 967 flow [2024-06-27 18:11:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-27 18:11:37,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2024-06-27 18:11:37,926 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 633 flow. Second operand 6 states and 190 transitions. [2024-06-27 18:11:37,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 967 flow [2024-06-27 18:11:37,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 927 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:11:37,959 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 636 flow [2024-06-27 18:11:37,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=93, PETRI_TRANSITIONS=104} [2024-06-27 18:11:37,960 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-06-27 18:11:37,960 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 636 flow [2024-06-27 18:11:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:37,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:37,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:37,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:11:37,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:37,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2022789340, now seen corresponding path program 1 times [2024-06-27 18:11:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:37,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160097118] [2024-06-27 18:11:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:37,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160097118] [2024-06-27 18:11:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160097118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:38,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456362233] [2024-06-27 18:11:38,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:38,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:39,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:39,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 104 transitions, 636 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:39,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:39,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:39,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:42,583 INFO L124 PetriNetUnfolderBase]: 21504/32294 cut-off events. [2024-06-27 18:11:42,583 INFO L125 PetriNetUnfolderBase]: For 95920/95920 co-relation queries the response was YES. [2024-06-27 18:11:42,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103337 conditions, 32294 events. 21504/32294 cut-off events. For 95920/95920 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 226924 event pairs, 10139 based on Foata normal form. 6/31370 useless extension candidates. Maximal degree in co-relation 103306. Up to 28473 conditions per place. [2024-06-27 18:11:42,863 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 128 selfloop transitions, 19 changer transitions 0/160 dead transitions. [2024-06-27 18:11:42,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 160 transitions, 1110 flow [2024-06-27 18:11:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-06-27 18:11:42,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544794188861986 [2024-06-27 18:11:42,865 INFO L175 Difference]: Start difference. First operand has 93 places, 104 transitions, 636 flow. Second operand 7 states and 229 transitions. [2024-06-27 18:11:42,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 160 transitions, 1110 flow [2024-06-27 18:11:42,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 160 transitions, 1057 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:42,907 INFO L231 Difference]: Finished difference. Result has 95 places, 108 transitions, 680 flow [2024-06-27 18:11:42,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=95, PETRI_TRANSITIONS=108} [2024-06-27 18:11:42,908 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2024-06-27 18:11:42,908 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 108 transitions, 680 flow [2024-06-27 18:11:42,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:42,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:42,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:42,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:11:42,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:42,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2022909310, now seen corresponding path program 2 times [2024-06-27 18:11:42,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613728442] [2024-06-27 18:11:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:43,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613728442] [2024-06-27 18:11:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613728442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136990130] [2024-06-27 18:11:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:44,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:44,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 108 transitions, 680 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:44,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:44,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:44,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:47,779 INFO L124 PetriNetUnfolderBase]: 21634/32485 cut-off events. [2024-06-27 18:11:47,779 INFO L125 PetriNetUnfolderBase]: For 123066/123066 co-relation queries the response was YES. [2024-06-27 18:11:47,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110230 conditions, 32485 events. 21634/32485 cut-off events. For 123066/123066 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 228046 event pairs, 9727 based on Foata normal form. 6/31552 useless extension candidates. Maximal degree in co-relation 110199. Up to 28410 conditions per place. [2024-06-27 18:11:48,000 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 120 selfloop transitions, 37 changer transitions 0/170 dead transitions. [2024-06-27 18:11:48,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 170 transitions, 1284 flow [2024-06-27 18:11:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-06-27 18:11:48,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5690072639225182 [2024-06-27 18:11:48,001 INFO L175 Difference]: Start difference. First operand has 95 places, 108 transitions, 680 flow. Second operand 7 states and 235 transitions. [2024-06-27 18:11:48,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 170 transitions, 1284 flow [2024-06-27 18:11:48,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 170 transitions, 1219 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:48,046 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 804 flow [2024-06-27 18:11:48,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2024-06-27 18:11:48,046 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 30 predicate places. [2024-06-27 18:11:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 804 flow [2024-06-27 18:11:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:48,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:11:48,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:48,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 286272860, now seen corresponding path program 3 times [2024-06-27 18:11:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448115007] [2024-06-27 18:11:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:48,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448115007] [2024-06-27 18:11:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448115007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114266510] [2024-06-27 18:11:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:49,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:11:49,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 804 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:49,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:49,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:11:49,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:52,839 INFO L124 PetriNetUnfolderBase]: 21616/32607 cut-off events. [2024-06-27 18:11:52,839 INFO L125 PetriNetUnfolderBase]: For 157847/157847 co-relation queries the response was YES. [2024-06-27 18:11:52,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116129 conditions, 32607 events. 21616/32607 cut-off events. For 157847/157847 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 233016 event pairs, 10920 based on Foata normal form. 6/31774 useless extension candidates. Maximal degree in co-relation 116097. Up to 28601 conditions per place. [2024-06-27 18:11:53,095 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 128 selfloop transitions, 20 changer transitions 0/161 dead transitions. [2024-06-27 18:11:53,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 161 transitions, 1220 flow [2024-06-27 18:11:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 18:11:53,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5399515738498789 [2024-06-27 18:11:53,097 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 804 flow. Second operand 7 states and 223 transitions. [2024-06-27 18:11:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 161 transitions, 1220 flow [2024-06-27 18:11:53,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 161 transitions, 1136 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 18:11:53,168 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 771 flow [2024-06-27 18:11:53,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=771, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2024-06-27 18:11:53,169 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-06-27 18:11:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 771 flow [2024-06-27 18:11:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:11:53,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -350680575, now seen corresponding path program 1 times [2024-06-27 18:11:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269861068] [2024-06-27 18:11:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:54,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269861068] [2024-06-27 18:11:54,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269861068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:54,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:54,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:11:54,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333947709] [2024-06-27 18:11:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:11:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:54,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:11:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:11:54,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:11:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 771 flow. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:54,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:11:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:58,935 INFO L124 PetriNetUnfolderBase]: 26250/39518 cut-off events. [2024-06-27 18:11:58,936 INFO L125 PetriNetUnfolderBase]: For 194379/194379 co-relation queries the response was YES. [2024-06-27 18:11:59,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138382 conditions, 39518 events. 26250/39518 cut-off events. For 194379/194379 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 286149 event pairs, 13247 based on Foata normal form. 6/38378 useless extension candidates. Maximal degree in co-relation 138348. Up to 34668 conditions per place. [2024-06-27 18:11:59,207 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 135 selfloop transitions, 27 changer transitions 0/174 dead transitions. [2024-06-27 18:11:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 174 transitions, 1318 flow [2024-06-27 18:11:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 18:11:59,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5278450363196125 [2024-06-27 18:11:59,209 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 771 flow. Second operand 7 states and 218 transitions. [2024-06-27 18:11:59,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 174 transitions, 1318 flow [2024-06-27 18:11:59,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 174 transitions, 1240 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:59,263 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 869 flow [2024-06-27 18:11:59,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=869, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2024-06-27 18:11:59,264 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 36 predicate places. [2024-06-27 18:11:59,264 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 869 flow [2024-06-27 18:11:59,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:59,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:59,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:59,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:11:59,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:11:59,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1736682515, now seen corresponding path program 1 times [2024-06-27 18:11:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678524246] [2024-06-27 18:11:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:59,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:59,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678524246] [2024-06-27 18:11:59,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678524246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:59,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:59,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:11:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682150948] [2024-06-27 18:11:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:59,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:11:59,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:11:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:12:00,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:12:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:00,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:12:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand