./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix037_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix037_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:31:43,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:31:43,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:31:43,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:31:43,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:31:43,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:31:43,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:31:43,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:31:43,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:31:43,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:31:43,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:31:43,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:31:43,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:31:43,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:31:43,156 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:31:43,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:31:43,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:31:43,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:31:43,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:31:43,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:31:43,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:31:43,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:31:43,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:31:43,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:31:43,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:31:43,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:31:43,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:31:43,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:31:43,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:31:43,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:31:43,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:31:43,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:31:43,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:31:43,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:31:43,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:31:43,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:31:43,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:31:43,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:31:43,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:31:43,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:31:43,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:31:43,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:31:43,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:31:43,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:31:43,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:31:43,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:31:43,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:31:43,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:31:43,447 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:31:43,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:31:44,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:31:44,968 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:31:44,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:31:44,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa29d2be3/77e9c539f3144f1f87d67d7686dd5766/FLAG31e741089 [2024-06-27 18:31:44,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa29d2be3/77e9c539f3144f1f87d67d7686dd5766 [2024-06-27 18:31:45,000 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:31:45,001 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:31:45,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix037_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:31:45,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:31:45,251 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:31:45,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:31:45,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:31:45,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:31:45,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:31:44" (1/2) ... [2024-06-27 18:31:45,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac5a815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:31:45, skipping insertion in model container [2024-06-27 18:31:45,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:31:44" (1/2) ... [2024-06-27 18:31:45,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51ecb95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:31:45, skipping insertion in model container [2024-06-27 18:31:45,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:31:45" (2/2) ... [2024-06-27 18:31:45,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac5a815 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:31:45, skipping insertion in model container [2024-06-27 18:31:45,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:31:45" (2/2) ... [2024-06-27 18:31:45,262 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:31:45,413 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:31:45,415 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 18:31:45,415 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 18:31:45,416 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 18:31:45,416 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 18:31:45,416 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:31:45,417 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 18:31:45,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:31:45,660 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/mix037_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:31:45,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:31:45,881 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:31:45,914 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/mix037_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:31:46,048 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:31:46,098 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:31:46,099 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:31:46 WrapperNode [2024-06-27 18:31:46,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:31:46,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:31:46,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:31:46,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:31:46,108 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,127 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,162 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 136 [2024-06-27 18:31:46,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:31:46,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:31:46,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:31:46,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:31:46,177 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,178 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,182 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,199 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 18:31:46,200 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,200 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,210 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,226 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,228 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,243 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:31:46,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:31:46,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:31:46,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:31:46,249 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 06:31:46" (1/1) ... [2024-06-27 18:31:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:31:46,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:31:46,289 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 18:31:46,316 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 18:31:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:31:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:31:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:31:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:31:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:31:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:31:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:31:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:31:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:31:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:31:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:31:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:31:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:31:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:31:46,340 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 18:31:46,541 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:31:46,543 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:31:46,964 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:31:46,965 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:31:47,179 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:31:47,179 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:31:47,180 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:31:47 BoogieIcfgContainer [2024-06-27 18:31:47,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:31:47,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:31:47,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:31:47,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:31:47,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:31:44" (1/4) ... [2024-06-27 18:31:47,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a937c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:31:47, skipping insertion in model container [2024-06-27 18:31:47,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:31:45" (2/4) ... [2024-06-27 18:31:47,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a937c9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:31:47, skipping insertion in model container [2024-06-27 18:31:47,189 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 06:31:46" (3/4) ... [2024-06-27 18:31:47,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a937c9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:31:47, skipping insertion in model container [2024-06-27 18:31:47,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:31:47" (4/4) ... [2024-06-27 18:31:47,191 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:31:47,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:31:47,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:31:47,209 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:31:47,273 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:31:47,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:31:47,357 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 18:31:47,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:31:47,361 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 100 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 18:31:47,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:31:47,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 18:31:47,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:31:47,392 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;@57507fc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:31:47,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:31:47,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:31:47,398 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:31:47,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:31:47,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:47,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:31:47,400 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 18:31:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 386818320, now seen corresponding path program 1 times [2024-06-27 18:31:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:47,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184933795] [2024-06-27 18:31:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:48,674 INFO 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 18:31:48,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:48,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184933795] [2024-06-27 18:31:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184933795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:48,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:48,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:31:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212798943] [2024-06-27 18:31:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:31:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:31:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:31:48,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:31:48,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:31:48,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:48,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:31:48,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:53,885 INFO L124 PetriNetUnfolderBase]: 29158/42729 cut-off events. [2024-06-27 18:31:53,885 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-06-27 18:31:53,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81769 conditions, 42729 events. 29158/42729 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 302896 event pairs, 24316 based on Foata normal form. 1051/40914 useless extension candidates. Maximal degree in co-relation 81756. Up to 38583 conditions per place. [2024-06-27 18:31:54,329 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 53 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 18:31:54,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 285 flow [2024-06-27 18:31:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:31:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:31:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 18:31:54,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-06-27 18:31:54,342 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 119 transitions. [2024-06-27 18:31:54,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 285 flow [2024-06-27 18:31:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:54,353 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-27 18:31:54,356 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 18:31:54,360 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:31:54,360 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-27 18:31:54,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:31:54,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:54,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:31:54,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:31:54,361 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 18:31:54,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash 386819209, now seen corresponding path program 1 times [2024-06-27 18:31:54,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:54,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950165373] [2024-06-27 18:31:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:54,450 INFO 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 18:31:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950165373] [2024-06-27 18:31:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950165373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:31:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132838994] [2024-06-27 18:31:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:31:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:31:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:31:54,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-06-27 18:31:54,456 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 18:31:54,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:54,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-06-27 18:31:54,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:55,531 INFO L124 PetriNetUnfolderBase]: 5221/8977 cut-off events. [2024-06-27 18:31:55,531 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-27 18:31:55,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17277 conditions, 8977 events. 5221/8977 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 69968 event pairs, 3410 based on Foata normal form. 0/8255 useless extension candidates. Maximal degree in co-relation 17265. Up to 6080 conditions per place. [2024-06-27 18:31:55,590 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-06-27 18:31:55,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 297 flow [2024-06-27 18:31:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:31:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:31:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-06-27 18:31:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966101694915254 [2024-06-27 18:31:55,592 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 141 transitions. [2024-06-27 18:31:55,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 297 flow [2024-06-27 18:31:55,594 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 18:31:55,595 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-06-27 18:31:55,595 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 18:31:55,596 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:31:55,596 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-06-27 18:31:55,597 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 18:31:55,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:55,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:31:55,597 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 18:31:55,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1928908936, now seen corresponding path program 1 times [2024-06-27 18:31:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:55,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525439617] [2024-06-27 18:31:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:56,529 INFO 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 18:31:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525439617] [2024-06-27 18:31:56,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525439617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:56,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:56,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:31:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382295942] [2024-06-27 18:31:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:56,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:31:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:31:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:31:56,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:31:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:31:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:56,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:31:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:59,488 INFO L124 PetriNetUnfolderBase]: 24803/35959 cut-off events. [2024-06-27 18:31:59,488 INFO L125 PetriNetUnfolderBase]: For 8049/8049 co-relation queries the response was YES. [2024-06-27 18:31:59,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77401 conditions, 35959 events. 24803/35959 cut-off events. For 8049/8049 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 243476 event pairs, 18001 based on Foata normal form. 4/34823 useless extension candidates. Maximal degree in co-relation 77388. Up to 32855 conditions per place. [2024-06-27 18:32:00,117 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 65 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-06-27 18:32:00,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 404 flow [2024-06-27 18:32:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:32:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:32:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-27 18:32:00,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6313559322033898 [2024-06-27 18:32:00,129 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 149 transitions. [2024-06-27 18:32:00,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 404 flow [2024-06-27 18:32:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:32:00,133 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-06-27 18:32:00,133 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 18:32:00,134 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 18:32:00,134 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-06-27 18:32:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:32:00,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:00,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:32:00,136 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 18:32:00,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 333367153, now seen corresponding path program 1 times [2024-06-27 18:32:00,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138111512] [2024-06-27 18:32:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:01,267 INFO 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 18:32:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:01,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138111512] [2024-06-27 18:32:01,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138111512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:01,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:01,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:32:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289124910] [2024-06-27 18:32:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:32:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:32:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:32:01,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:32:01,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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 18:32:01,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:01,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:32:01,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:04,013 INFO L124 PetriNetUnfolderBase]: 21521/31751 cut-off events. [2024-06-27 18:32:04,014 INFO L125 PetriNetUnfolderBase]: For 14980/14980 co-relation queries the response was YES. [2024-06-27 18:32:04,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74222 conditions, 31751 events. 21521/31751 cut-off events. For 14980/14980 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 217864 event pairs, 12599 based on Foata normal form. 10/30770 useless extension candidates. Maximal degree in co-relation 74207. Up to 28358 conditions per place. [2024-06-27 18:32:04,263 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 88 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-06-27 18:32:04,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 657 flow [2024-06-27 18:32:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:32:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:32:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-06-27 18:32:04,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576271186440678 [2024-06-27 18:32:04,266 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 5 states and 194 transitions. [2024-06-27 18:32:04,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 657 flow [2024-06-27 18:32:04,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 125 transitions, 642 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:32:04,276 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 384 flow [2024-06-27 18:32:04,276 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=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-06-27 18:32:04,278 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-06-27 18:32:04,278 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 384 flow [2024-06-27 18:32:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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 18:32:04,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:04,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:32:04,279 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 18:32:04,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 996397197, now seen corresponding path program 1 times [2024-06-27 18:32:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699218279] [2024-06-27 18:32:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:05,920 INFO 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 18:32:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699218279] [2024-06-27 18:32:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699218279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:32:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203108681] [2024-06-27 18:32:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:32:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:32:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:32:06,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:32:06,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:06,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:06,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:32:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:08,986 INFO L124 PetriNetUnfolderBase]: 21598/31828 cut-off events. [2024-06-27 18:32:08,986 INFO L125 PetriNetUnfolderBase]: For 36925/36925 co-relation queries the response was YES. [2024-06-27 18:32:09,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87243 conditions, 31828 events. 21598/31828 cut-off events. For 36925/36925 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 217539 event pairs, 10904 based on Foata normal form. 10/30845 useless extension candidates. Maximal degree in co-relation 87224. Up to 28372 conditions per place. [2024-06-27 18:32:09,222 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 102 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2024-06-27 18:32:09,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 144 transitions, 870 flow [2024-06-27 18:32:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:32:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:32:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-06-27 18:32:09,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-06-27 18:32:09,228 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 384 flow. Second operand 6 states and 231 transitions. [2024-06-27 18:32:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 144 transitions, 870 flow [2024-06-27 18:32:09,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 858 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:32:09,254 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 482 flow [2024-06-27 18:32:09,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-06-27 18:32:09,257 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-27 18:32:09,257 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 482 flow [2024-06-27 18:32:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:09,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:09,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:09,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:32:09,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:32:09,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1756647344, now seen corresponding path program 1 times [2024-06-27 18:32:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:09,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636317438] [2024-06-27 18:32:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:11,109 INFO 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 18:32:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636317438] [2024-06-27 18:32:11,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636317438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:11,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:11,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:32:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554718582] [2024-06-27 18:32:11,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:11,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:32:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:32:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:32:11,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:32:11,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:32:11,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:11,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:32:11,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:14,306 INFO L124 PetriNetUnfolderBase]: 21962/32356 cut-off events. [2024-06-27 18:32:14,306 INFO L125 PetriNetUnfolderBase]: For 57868/57868 co-relation queries the response was YES. [2024-06-27 18:32:14,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97042 conditions, 32356 events. 21962/32356 cut-off events. For 57868/57868 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 221486 event pairs, 9263 based on Foata normal form. 44/31409 useless extension candidates. Maximal degree in co-relation 97020. Up to 28446 conditions per place. [2024-06-27 18:32:14,563 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 117 selfloop transitions, 31 changer transitions 0/162 dead transitions. [2024-06-27 18:32:14,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 1056 flow [2024-06-27 18:32:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-06-27 18:32:14,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464891041162227 [2024-06-27 18:32:14,565 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 482 flow. Second operand 7 states and 267 transitions. [2024-06-27 18:32:14,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 1056 flow [2024-06-27 18:32:14,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 162 transitions, 986 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:14,589 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 512 flow [2024-06-27 18:32:14,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 18:32:14,589 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-06-27 18:32:14,590 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 512 flow [2024-06-27 18:32:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:32:14,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:14,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:14,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:32:14,591 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 18:32:14,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -583779690, now seen corresponding path program 1 times [2024-06-27 18:32:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240080278] [2024-06-27 18:32:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240080278] [2024-06-27 18:32:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240080278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:15,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:15,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:32:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248168289] [2024-06-27 18:32:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:15,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:32:15,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:32:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:32:15,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:32:15,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:15,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:15,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:32:15,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:19,433 INFO L124 PetriNetUnfolderBase]: 25463/37672 cut-off events. [2024-06-27 18:32:19,433 INFO L125 PetriNetUnfolderBase]: For 87371/87371 co-relation queries the response was YES. [2024-06-27 18:32:19,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116642 conditions, 37672 events. 25463/37672 cut-off events. For 87371/87371 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 263153 event pairs, 12792 based on Foata normal form. 6/36669 useless extension candidates. Maximal degree in co-relation 116618. Up to 33751 conditions per place. [2024-06-27 18:32:19,720 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 87 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2024-06-27 18:32:19,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 822 flow [2024-06-27 18:32:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:32:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:32:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 18:32:19,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288135593220339 [2024-06-27 18:32:19,722 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 512 flow. Second operand 5 states and 156 transitions. [2024-06-27 18:32:19,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 822 flow [2024-06-27 18:32:19,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 748 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:32:19,755 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 531 flow [2024-06-27 18:32:19,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=531, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2024-06-27 18:32:19,756 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-06-27 18:32:19,756 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 531 flow [2024-06-27 18:32:19,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:19,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:19,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:19,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:32:19,757 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 18:32:19,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1570195264, now seen corresponding path program 1 times [2024-06-27 18:32:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491741050] [2024-06-27 18:32:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:21,058 INFO 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 18:32:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491741050] [2024-06-27 18:32:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491741050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:21,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:32:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982445536] [2024-06-27 18:32:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:32:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:32:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:32:21,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:32:21,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 531 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:32:21,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:21,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:32:21,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:25,015 INFO L124 PetriNetUnfolderBase]: 25521/37219 cut-off events. [2024-06-27 18:32:25,015 INFO L125 PetriNetUnfolderBase]: For 108932/108932 co-relation queries the response was YES. [2024-06-27 18:32:25,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121964 conditions, 37219 events. 25521/37219 cut-off events. For 108932/108932 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 251692 event pairs, 11322 based on Foata normal form. 12/36193 useless extension candidates. Maximal degree in co-relation 121938. Up to 33564 conditions per place. [2024-06-27 18:32:25,460 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 98 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-06-27 18:32:25,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 960 flow [2024-06-27 18:32:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:32:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:32:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 18:32:25,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2024-06-27 18:32:25,463 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 531 flow. Second operand 6 states and 197 transitions. [2024-06-27 18:32:25,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 960 flow [2024-06-27 18:32:25,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 137 transitions, 909 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:25,499 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 580 flow [2024-06-27 18:32:25,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-06-27 18:32:25,500 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-06-27 18:32:25,500 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 580 flow [2024-06-27 18:32:25,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:32:25,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:25,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:25,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:32:25,501 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 18:32:25,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1597128064, now seen corresponding path program 2 times [2024-06-27 18:32:25,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365558550] [2024-06-27 18:32:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:26,433 INFO 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 18:32:26,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:26,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365558550] [2024-06-27 18:32:26,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365558550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:32:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870700082] [2024-06-27 18:32:26,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:32:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:32:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:32:26,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:32:26,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:32:26,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:26,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:32:26,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:30,576 INFO L124 PetriNetUnfolderBase]: 25431/37598 cut-off events. [2024-06-27 18:32:30,577 INFO L125 PetriNetUnfolderBase]: For 118146/118146 co-relation queries the response was YES. [2024-06-27 18:32:30,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123403 conditions, 37598 events. 25431/37598 cut-off events. For 118146/118146 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 262241 event pairs, 12766 based on Foata normal form. 6/36591 useless extension candidates. Maximal degree in co-relation 123376. Up to 33668 conditions per place. [2024-06-27 18:32:30,896 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 100 selfloop transitions, 16 changer transitions 0/128 dead transitions. [2024-06-27 18:32:30,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 128 transitions, 898 flow [2024-06-27 18:32:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:32:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:32:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 18:32:30,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225988700564972 [2024-06-27 18:32:30,899 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 580 flow. Second operand 6 states and 185 transitions. [2024-06-27 18:32:30,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 128 transitions, 898 flow [2024-06-27 18:32:30,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 851 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:30,954 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 576 flow [2024-06-27 18:32:30,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-06-27 18:32:30,955 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-06-27 18:32:30,955 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 576 flow [2024-06-27 18:32:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:32:30,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:30,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:30,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:32:30,957 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 18:32:30,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1025318824, now seen corresponding path program 1 times [2024-06-27 18:32:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323243991] [2024-06-27 18:32:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:30,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat