./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix027_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/mix027_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix027_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:13:32,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:13:32,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:13:32,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:13:32,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:13:32,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:13:32,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:13:32,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:13:32,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:13:32,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:13:32,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:13:32,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:13:32,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:13:32,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:13:32,174 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:13:32,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:13:32,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:13:32,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:13:32,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:13:32,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:13:32,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:13:32,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:13:32,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:13:32,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:13:32,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:13:32,177 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:13:32,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:13:32,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:13:32,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:13:32,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:13:32,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:13:32,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:13:32,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:13:32,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:13:32,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:13:32,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:13:32,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:13:32,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:13:32,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:13:32,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:13:32,185 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:13:32,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:13:32,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:13:32,186 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:13:32,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:13:32,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:13:32,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:13:32,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:13:32,431 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:13:32,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:13:33,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:13:33,632 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:13:33,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:13:33,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fadd6c1ee/e4fabecbbde740f6ae26461d6c08f28d/FLAG4e2be21fb [2024-06-27 20:13:33,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fadd6c1ee/e4fabecbbde740f6ae26461d6c08f28d [2024-06-27 20:13:33,656 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:13:33,657 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:13:33,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix027_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 20:13:33,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:13:33,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:13:33,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:13:33,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:13:33,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:13:33,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:13:33" (1/2) ... [2024-06-27 20:13:33,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2d9f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:13:33, skipping insertion in model container [2024-06-27 20:13:33,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:13:33" (1/2) ... [2024-06-27 20:13:33,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19542b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:13:33, skipping insertion in model container [2024-06-27 20:13:33,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:13:33" (2/2) ... [2024-06-27 20:13:33,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2d9f46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:13:33, skipping insertion in model container [2024-06-27 20:13:33,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:13:33" (2/2) ... [2024-06-27 20:13:33,850 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:13:33,978 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:13:33,980 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:13:33,980 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:13:33,980 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:13:33,980 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:13:33,980 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:13:33,981 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-27 20:13:34,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:13:34,345 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:13:34,355 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:13:34,498 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:13:34,536 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:13:34,537 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:13:34 WrapperNode [2024-06-27 20:13:34,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:13:34,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:13:34,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:13:34,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:13:34,544 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,572 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,607 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-27 20:13:34,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:13:34,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:13:34,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:13:34,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:13:34,618 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,618 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,634 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,655 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 20:13:34,660 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,660 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,670 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,679 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,681 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,687 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:13:34,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:13:34,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:13:34,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:13:34,695 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 08:13:34" (1/1) ... [2024-06-27 20:13:34,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:13:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:13:34,720 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 20:13:34,743 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 20:13:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:13:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:13:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:13:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:13:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:13:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:13:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:13:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:13:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:13:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:13:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:13:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:13:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:13:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:13:34,762 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 20:13:34,897 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:13:34,899 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:13:35,256 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:13:35,256 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:13:35,391 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:13:35,391 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:13:35,392 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:13:35 BoogieIcfgContainer [2024-06-27 20:13:35,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:13:35,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:13:35,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:13:35,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:13:35,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:13:33" (1/4) ... [2024-06-27 20:13:35,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fda62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:13:35, skipping insertion in model container [2024-06-27 20:13:35,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:13:33" (2/4) ... [2024-06-27 20:13:35,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fda62e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:13:35, skipping insertion in model container [2024-06-27 20:13:35,399 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 08:13:34" (3/4) ... [2024-06-27 20:13:35,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fda62e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:13:35, skipping insertion in model container [2024-06-27 20:13:35,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:13:35" (4/4) ... [2024-06-27 20:13:35,401 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:13:35,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:13:35,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:13:35,416 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:13:35,469 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:13:35,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 20:13:35,524 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 20:13:35,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:13:35,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:13:35,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 20:13:35,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-27 20:13:35,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:13:35,539 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;@3fe52ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:13:35,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:13:35,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:13:35,542 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:13:35,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:13:35,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:35,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:13:35,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:35,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash 400592535, now seen corresponding path program 1 times [2024-06-27 20:13:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301513898] [2024-06-27 20:13:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:36,477 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 20:13:36,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:36,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301513898] [2024-06-27 20:13:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301513898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:36,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:36,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:13:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519295946] [2024-06-27 20:13:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:36,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:13:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:13:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:13:36,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:13:36,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:13:36,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:36,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:13:36,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:38,137 INFO L124 PetriNetUnfolderBase]: 11595/16041 cut-off events. [2024-06-27 20:13:38,137 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-27 20:13:38,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32177 conditions, 16041 events. 11595/16041 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87147 event pairs, 9068 based on Foata normal form. 1/15827 useless extension candidates. Maximal degree in co-relation 32164. Up to 15685 conditions per place. [2024-06-27 20:13:38,235 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 44 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 20:13:38,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 231 flow [2024-06-27 20:13:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:13:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:13:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 20:13:38,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-27 20:13:38,247 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 95 transitions. [2024-06-27 20:13:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 231 flow [2024-06-27 20:13:38,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:13:38,256 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-27 20:13:38,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 20:13:38,261 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-27 20:13:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-27 20:13:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:13:38,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:38,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:38,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:13:38,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:38,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1577601866, now seen corresponding path program 1 times [2024-06-27 20:13:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:38,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687275770] [2024-06-27 20:13:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:38,930 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 20:13:38,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:38,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687275770] [2024-06-27 20:13:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687275770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:38,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:38,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:13:38,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563620975] [2024-06-27 20:13:38,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:38,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:13:38,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:13:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:13:38,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:13:38,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:38,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:38,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:13:38,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:40,401 INFO L124 PetriNetUnfolderBase]: 11585/16035 cut-off events. [2024-06-27 20:13:40,401 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-27 20:13:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 16035 events. 11585/16035 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87143 event pairs, 8249 based on Foata normal form. 4/16037 useless extension candidates. Maximal degree in co-relation 36142. Up to 15650 conditions per place. [2024-06-27 20:13:40,479 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 20:13:40,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 323 flow [2024-06-27 20:13:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:13:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:13:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 20:13:40,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2024-06-27 20:13:40,481 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 123 transitions. [2024-06-27 20:13:40,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 323 flow [2024-06-27 20:13:40,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:13:40,484 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-27 20:13:40,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 20:13:40,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-27 20:13:40,485 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-27 20:13:40,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:40,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:40,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:40,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:13:40,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:40,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1661016634, now seen corresponding path program 1 times [2024-06-27 20:13:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362933870] [2024-06-27 20:13:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:13:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362933870] [2024-06-27 20:13:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362933870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:13:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613164723] [2024-06-27 20:13:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:41,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:13:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:13:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:13:41,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:13:41,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:41,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:41,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:13:41,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:42,813 INFO L124 PetriNetUnfolderBase]: 11693/16126 cut-off events. [2024-06-27 20:13:42,813 INFO L125 PetriNetUnfolderBase]: For 8530/8530 co-relation queries the response was YES. [2024-06-27 20:13:42,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40477 conditions, 16126 events. 11693/16126 cut-off events. For 8530/8530 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 87229 event pairs, 6700 based on Foata normal form. 10/16128 useless extension candidates. Maximal degree in co-relation 40463. Up to 15623 conditions per place. [2024-06-27 20:13:42,892 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 74 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-27 20:13:42,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 547 flow [2024-06-27 20:13:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:13:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:13:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-27 20:13:42,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6269230769230769 [2024-06-27 20:13:42,894 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 163 transitions. [2024-06-27 20:13:42,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 547 flow [2024-06-27 20:13:42,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 528 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:13:42,897 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 312 flow [2024-06-27 20:13:42,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-27 20:13:42,898 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-27 20:13:42,898 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 312 flow [2024-06-27 20:13:42,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:42,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:42,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:42,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:13:42,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:42,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:42,900 INFO L85 PathProgramCache]: Analyzing trace with hash 131209775, now seen corresponding path program 1 times [2024-06-27 20:13:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:42,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138242673] [2024-06-27 20:13:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:42,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:43,809 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 20:13:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138242673] [2024-06-27 20:13:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138242673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:43,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:43,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:13:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420660537] [2024-06-27 20:13:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:43,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:13:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:13:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:13:43,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:13:43,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:43,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:43,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:13:43,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:45,420 INFO L124 PetriNetUnfolderBase]: 11739/16252 cut-off events. [2024-06-27 20:13:45,420 INFO L125 PetriNetUnfolderBase]: For 20609/20611 co-relation queries the response was YES. [2024-06-27 20:13:45,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47999 conditions, 16252 events. 11739/16252 cut-off events. For 20609/20611 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 88429 event pairs, 5599 based on Foata normal form. 10/16257 useless extension candidates. Maximal degree in co-relation 47982. Up to 15545 conditions per place. [2024-06-27 20:13:45,509 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 89 selfloop transitions, 37 changer transitions 0/133 dead transitions. [2024-06-27 20:13:45,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 133 transitions, 858 flow [2024-06-27 20:13:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:13:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:13:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 20:13:45,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2024-06-27 20:13:45,511 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 312 flow. Second operand 6 states and 197 transitions. [2024-06-27 20:13:45,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 133 transitions, 858 flow [2024-06-27 20:13:45,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 133 transitions, 846 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 20:13:45,522 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 550 flow [2024-06-27 20:13:45,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2024-06-27 20:13:45,523 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-27 20:13:45,523 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 550 flow [2024-06-27 20:13:45,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:45,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:45,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:45,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:13:45,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:45,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1490880453, now seen corresponding path program 1 times [2024-06-27 20:13:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038607315] [2024-06-27 20:13:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:46,525 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 20:13:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038607315] [2024-06-27 20:13:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038607315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:46,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:46,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:13:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180721238] [2024-06-27 20:13:46,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:13:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:13:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:13:46,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:13:46,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 550 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:46,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:46,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:13:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:48,422 INFO L124 PetriNetUnfolderBase]: 11926/16553 cut-off events. [2024-06-27 20:13:48,422 INFO L125 PetriNetUnfolderBase]: For 39112/39117 co-relation queries the response was YES. [2024-06-27 20:13:48,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56358 conditions, 16553 events. 11926/16553 cut-off events. For 39112/39117 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 90619 event pairs, 4656 based on Foata normal form. 40/16588 useless extension candidates. Maximal degree in co-relation 56335. Up to 15546 conditions per place. [2024-06-27 20:13:48,511 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 100 selfloop transitions, 40 changer transitions 0/147 dead transitions. [2024-06-27 20:13:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 1092 flow [2024-06-27 20:13:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:13:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:13:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-06-27 20:13:48,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6181318681318682 [2024-06-27 20:13:48,513 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 550 flow. Second operand 7 states and 225 transitions. [2024-06-27 20:13:48,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 1092 flow [2024-06-27 20:13:48,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 1070 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 20:13:48,528 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 645 flow [2024-06-27 20:13:48,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-27 20:13:48,529 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-27 20:13:48,529 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 645 flow [2024-06-27 20:13:48,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:48,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:48,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:13:48,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:48,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1084653298, now seen corresponding path program 1 times [2024-06-27 20:13:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:48,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948828911] [2024-06-27 20:13:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:49,032 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 20:13:49,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948828911] [2024-06-27 20:13:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948828911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:13:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185424630] [2024-06-27 20:13:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:49,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:13:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:13:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:13:49,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:13:49,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 20:13:49,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:49,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:13:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:50,711 INFO L124 PetriNetUnfolderBase]: 11908/16516 cut-off events. [2024-06-27 20:13:50,711 INFO L125 PetriNetUnfolderBase]: For 49395/49395 co-relation queries the response was YES. [2024-06-27 20:13:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59203 conditions, 16516 events. 11908/16516 cut-off events. For 49395/49395 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 90256 event pairs, 5782 based on Foata normal form. 6/16520 useless extension candidates. Maximal degree in co-relation 59176. Up to 16118 conditions per place. [2024-06-27 20:13:50,797 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 81 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-27 20:13:50,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 877 flow [2024-06-27 20:13:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:13:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:13:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 20:13:50,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 20:13:50,798 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 645 flow. Second operand 5 states and 124 transitions. [2024-06-27 20:13:50,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 877 flow [2024-06-27 20:13:50,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 780 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 20:13:50,815 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 588 flow [2024-06-27 20:13:50,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-27 20:13:50,816 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-27 20:13:50,816 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 588 flow [2024-06-27 20:13:50,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 20:13:50,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:50,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:50,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:13:50,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:50,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash -203748305, now seen corresponding path program 1 times [2024-06-27 20:13:50,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:50,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117402953] [2024-06-27 20:13:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:51,528 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 20:13:51,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:51,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117402953] [2024-06-27 20:13:51,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117402953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:51,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:51,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:13:51,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459850426] [2024-06-27 20:13:51,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:51,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:13:51,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:13:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:13:51,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:13:51,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 20:13:51,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:51,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:13:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:53,153 INFO L124 PetriNetUnfolderBase]: 11934/16543 cut-off events. [2024-06-27 20:13:53,154 INFO L125 PetriNetUnfolderBase]: For 55676/55676 co-relation queries the response was YES. [2024-06-27 20:13:53,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59965 conditions, 16543 events. 11934/16543 cut-off events. For 55676/55676 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 90331 event pairs, 5477 based on Foata normal form. 12/16551 useless extension candidates. Maximal degree in co-relation 59936. Up to 15965 conditions per place. [2024-06-27 20:13:53,233 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 88 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-06-27 20:13:53,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 978 flow [2024-06-27 20:13:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:13:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:13:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-27 20:13:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 20:13:53,234 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 588 flow. Second operand 6 states and 158 transitions. [2024-06-27 20:13:53,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 978 flow [2024-06-27 20:13:53,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 937 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:13:53,253 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 656 flow [2024-06-27 20:13:53,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=656, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-06-27 20:13:53,254 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-27 20:13:53,254 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 656 flow [2024-06-27 20:13:53,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 20:13:53,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:53,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:13:53,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:53,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1325211631, now seen corresponding path program 2 times [2024-06-27 20:13:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113464877] [2024-06-27 20:13:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:53,858 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 20:13:53,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113464877] [2024-06-27 20:13:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113464877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:53,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:53,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:13:53,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528634932] [2024-06-27 20:13:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:13:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:13:53,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:13:53,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:13:53,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 20:13:53,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:53,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:13:53,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:55,381 INFO L124 PetriNetUnfolderBase]: 11889/16482 cut-off events. [2024-06-27 20:13:55,381 INFO L125 PetriNetUnfolderBase]: For 63596/63596 co-relation queries the response was YES. [2024-06-27 20:13:55,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61100 conditions, 16482 events. 11889/16482 cut-off events. For 63596/63596 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 89970 event pairs, 5746 based on Foata normal form. 6/16486 useless extension candidates. Maximal degree in co-relation 61071. Up to 16073 conditions per place. [2024-06-27 20:13:55,495 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 92 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-27 20:13:55,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 934 flow [2024-06-27 20:13:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:13:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:13:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 20:13:55,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 20:13:55,497 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 656 flow. Second operand 6 states and 147 transitions. [2024-06-27 20:13:55,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 934 flow [2024-06-27 20:13:55,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 891 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:13:55,542 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 652 flow [2024-06-27 20:13:55,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 20:13:55,543 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-27 20:13:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 652 flow [2024-06-27 20:13:55,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 20:13:55,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:55,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:55,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:13:55,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 954073619, now seen corresponding path program 1 times [2024-06-27 20:13:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:55,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890824987] [2024-06-27 20:13:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:55,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:13:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890824987] [2024-06-27 20:13:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890824987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:56,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:13:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307269197] [2024-06-27 20:13:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:13:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:13:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:13:56,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:13:56,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:56,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:56,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:13:56,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:59,210 INFO L124 PetriNetUnfolderBase]: 14429/19723 cut-off events. [2024-06-27 20:13:59,211 INFO L125 PetriNetUnfolderBase]: For 86866/86866 co-relation queries the response was YES. [2024-06-27 20:13:59,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73425 conditions, 19723 events. 14429/19723 cut-off events. For 86866/86866 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 105290 event pairs, 7020 based on Foata normal form. 6/19727 useless extension candidates. Maximal degree in co-relation 73395. Up to 19424 conditions per place. [2024-06-27 20:13:59,346 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 101 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-27 20:13:59,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 1047 flow [2024-06-27 20:13:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:13:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:13:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 20:13:59,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-27 20:13:59,347 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 652 flow. Second operand 7 states and 164 transitions. [2024-06-27 20:13:59,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 1047 flow [2024-06-27 20:13:59,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 977 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:13:59,392 INFO L231 Difference]: Finished difference. Result has 84 places, 94 transitions, 716 flow [2024-06-27 20:13:59,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=7, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=94} [2024-06-27 20:13:59,393 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-27 20:13:59,393 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 94 transitions, 716 flow [2024-06-27 20:13:59,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:59,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:59,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:59,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:13:59,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:13:59,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1138569467, now seen corresponding path program 1 times [2024-06-27 20:13:59,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:59,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941457924] [2024-06-27 20:13:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:59,925 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 20:13:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941457924] [2024-06-27 20:13:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941457924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:59,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:13:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740221898] [2024-06-27 20:13:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:13:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:13:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:13:59,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:13:59,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 94 transitions, 716 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 20:13:59,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:59,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:13:59,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:01,818 INFO L124 PetriNetUnfolderBase]: 14422/19938 cut-off events. [2024-06-27 20:14:01,818 INFO L125 PetriNetUnfolderBase]: For 102703/102703 co-relation queries the response was YES. [2024-06-27 20:14:01,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77874 conditions, 19938 events. 14422/19938 cut-off events. For 102703/102703 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 107993 event pairs, 7127 based on Foata normal form. 2/19938 useless extension candidates. Maximal degree in co-relation 77843. Up to 19481 conditions per place. [2024-06-27 20:14:01,929 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 97 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2024-06-27 20:14:01,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 1004 flow [2024-06-27 20:14:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:14:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:14:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 20:14:01,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-27 20:14:01,931 INFO L175 Difference]: Start difference. First operand has 84 places, 94 transitions, 716 flow. Second operand 5 states and 115 transitions. [2024-06-27 20:14:01,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 1004 flow [2024-06-27 20:14:01,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 944 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 20:14:01,979 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 731 flow [2024-06-27 20:14:01,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=731, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2024-06-27 20:14:01,980 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 20:14:01,980 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 731 flow [2024-06-27 20:14:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 20:14:01,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:01,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:01,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:14:01,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:01,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1762589134, now seen corresponding path program 1 times [2024-06-27 20:14:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:01,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836682739] [2024-06-27 20:14:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:02,977 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 20:14:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:02,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836682739] [2024-06-27 20:14:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836682739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:02,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:14:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830297889] [2024-06-27 20:14:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:14:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:14:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:14:03,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:14:03,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:03,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:03,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:14:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:04,926 INFO L124 PetriNetUnfolderBase]: 14073/19515 cut-off events. [2024-06-27 20:14:04,927 INFO L125 PetriNetUnfolderBase]: For 122234/122234 co-relation queries the response was YES. [2024-06-27 20:14:04,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80273 conditions, 19515 events. 14073/19515 cut-off events. For 122234/122234 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 108522 event pairs, 6294 based on Foata normal form. 6/19515 useless extension candidates. Maximal degree in co-relation 80241. Up to 18725 conditions per place. [2024-06-27 20:14:05,065 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 110 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-06-27 20:14:05,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 154 transitions, 1219 flow [2024-06-27 20:14:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 20:14:05,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-06-27 20:14:05,066 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 731 flow. Second operand 8 states and 207 transitions. [2024-06-27 20:14:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 154 transitions, 1219 flow [2024-06-27 20:14:05,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1174 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 20:14:05,127 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 858 flow [2024-06-27 20:14:05,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-06-27 20:14:05,127 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 20:14:05,127 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 858 flow [2024-06-27 20:14:05,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:05,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:05,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:05,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:14:05,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:05,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 244003824, now seen corresponding path program 1 times [2024-06-27 20:14:05,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:05,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679692220] [2024-06-27 20:14:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:06,161 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 20:14:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679692220] [2024-06-27 20:14:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679692220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:14:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084837676] [2024-06-27 20:14:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:14:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:14:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:14:06,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 858 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:06,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:06,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:08,191 INFO L124 PetriNetUnfolderBase]: 14452/19950 cut-off events. [2024-06-27 20:14:08,191 INFO L125 PetriNetUnfolderBase]: For 146412/146412 co-relation queries the response was YES. [2024-06-27 20:14:08,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86981 conditions, 19950 events. 14452/19950 cut-off events. For 146412/146412 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 107806 event pairs, 6936 based on Foata normal form. 3/19951 useless extension candidates. Maximal degree in co-relation 86947. Up to 19442 conditions per place. [2024-06-27 20:14:08,358 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 112 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-27 20:14:08,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1260 flow [2024-06-27 20:14:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:14:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:14:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 20:14:08,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532967032967033 [2024-06-27 20:14:08,360 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 858 flow. Second operand 7 states and 165 transitions. [2024-06-27 20:14:08,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1260 flow [2024-06-27 20:14:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 1156 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:14:08,447 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 872 flow [2024-06-27 20:14:08,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=872, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-06-27 20:14:08,447 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-27 20:14:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 872 flow [2024-06-27 20:14:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:08,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:08,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:14:08,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:08,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -909995401, now seen corresponding path program 1 times [2024-06-27 20:14:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92065487] [2024-06-27 20:14:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:09,043 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 20:14:09,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:09,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92065487] [2024-06-27 20:14:09,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92065487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:09,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:14:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873238422] [2024-06-27 20:14:09,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:09,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:14:09,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:14:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:14:09,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-27 20:14:09,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 872 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:09,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:09,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-27 20:14:09,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:11,304 INFO L124 PetriNetUnfolderBase]: 16510/22256 cut-off events. [2024-06-27 20:14:11,304 INFO L125 PetriNetUnfolderBase]: For 185698/185698 co-relation queries the response was YES. [2024-06-27 20:14:11,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98986 conditions, 22256 events. 16510/22256 cut-off events. For 185698/185698 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 114796 event pairs, 8012 based on Foata normal form. 6/22260 useless extension candidates. Maximal degree in co-relation 98951. Up to 22183 conditions per place. [2024-06-27 20:14:11,443 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 120 selfloop transitions, 22 changer transitions 0/146 dead transitions. [2024-06-27 20:14:11,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 146 transitions, 1384 flow [2024-06-27 20:14:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:14:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:14:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 20:14:11,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-27 20:14:11,445 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 872 flow. Second operand 6 states and 137 transitions. [2024-06-27 20:14:11,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 146 transitions, 1384 flow [2024-06-27 20:14:11,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1313 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:14:11,531 INFO L231 Difference]: Finished difference. Result has 95 places, 124 transitions, 1015 flow [2024-06-27 20:14:11,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1015, PETRI_PLACES=95, PETRI_TRANSITIONS=124} [2024-06-27 20:14:11,531 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-27 20:14:11,531 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 124 transitions, 1015 flow [2024-06-27 20:14:11,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:11,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:11,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:11,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:14:11,532 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:11,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash 901588536, now seen corresponding path program 1 times [2024-06-27 20:14:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913303826] [2024-06-27 20:14:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:12,588 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 20:14:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913303826] [2024-06-27 20:14:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913303826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:12,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:14:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080864991] [2024-06-27 20:14:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:14:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:14:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:14:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:14:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 124 transitions, 1015 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:14:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:15,302 INFO L124 PetriNetUnfolderBase]: 15583/21555 cut-off events. [2024-06-27 20:14:15,303 INFO L125 PetriNetUnfolderBase]: For 219306/219452 co-relation queries the response was YES. [2024-06-27 20:14:15,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102161 conditions, 21555 events. 15583/21555 cut-off events. For 219306/219452 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 120864 event pairs, 4570 based on Foata normal form. 24/21420 useless extension candidates. Maximal degree in co-relation 102123. Up to 19776 conditions per place. [2024-06-27 20:14:15,439 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 137 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2024-06-27 20:14:15,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 190 transitions, 1719 flow [2024-06-27 20:14:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 20:14:15,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2024-06-27 20:14:15,441 INFO L175 Difference]: Start difference. First operand has 95 places, 124 transitions, 1015 flow. Second operand 8 states and 215 transitions. [2024-06-27 20:14:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 190 transitions, 1719 flow [2024-06-27 20:14:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 190 transitions, 1675 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 20:14:15,561 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1179 flow [2024-06-27 20:14:15,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1179, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-06-27 20:14:15,562 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-27 20:14:15,562 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1179 flow [2024-06-27 20:14:15,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:15,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:15,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:15,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:14:15,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:15,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 901648986, now seen corresponding path program 2 times [2024-06-27 20:14:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:15,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402372023] [2024-06-27 20:14:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:15,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:16,571 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 20:14:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:16,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402372023] [2024-06-27 20:14:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402372023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:16,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:16,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:14:16,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401263667] [2024-06-27 20:14:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:16,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:14:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:16,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:14:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:14:16,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:14:16,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1179 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:16,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:16,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:14:16,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:18,995 INFO L124 PetriNetUnfolderBase]: 15707/21747 cut-off events. [2024-06-27 20:14:18,995 INFO L125 PetriNetUnfolderBase]: For 252396/252542 co-relation queries the response was YES. [2024-06-27 20:14:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106634 conditions, 21747 events. 15707/21747 cut-off events. For 252396/252542 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 122259 event pairs, 5934 based on Foata normal form. 42/21640 useless extension candidates. Maximal degree in co-relation 106592. Up to 20541 conditions per place. [2024-06-27 20:14:19,657 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 141 selfloop transitions, 43 changer transitions 0/194 dead transitions. [2024-06-27 20:14:19,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 1773 flow [2024-06-27 20:14:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 20:14:19,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2024-06-27 20:14:19,659 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1179 flow. Second operand 9 states and 235 transitions. [2024-06-27 20:14:19,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 1773 flow [2024-06-27 20:14:19,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1705 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 20:14:19,836 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 1265 flow [2024-06-27 20:14:19,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-06-27 20:14:19,836 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-27 20:14:19,836 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 1265 flow [2024-06-27 20:14:19,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:19,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:19,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:14:19,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:19,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1040010212, now seen corresponding path program 1 times [2024-06-27 20:14:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:19,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597539883] [2024-06-27 20:14:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:20,619 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 20:14:20,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:20,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597539883] [2024-06-27 20:14:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597539883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:14:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622405024] [2024-06-27 20:14:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:14:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:14:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:14:20,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:20,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 1265 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 20:14:20,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:20,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:20,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:22,871 INFO L124 PetriNetUnfolderBase]: 16086/22153 cut-off events. [2024-06-27 20:14:22,872 INFO L125 PetriNetUnfolderBase]: For 274752/274914 co-relation queries the response was YES. [2024-06-27 20:14:22,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111076 conditions, 22153 events. 16086/22153 cut-off events. For 274752/274914 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 121168 event pairs, 7101 based on Foata normal form. 6/22003 useless extension candidates. Maximal degree in co-relation 111032. Up to 21667 conditions per place. [2024-06-27 20:14:23,070 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 138 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-06-27 20:14:23,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 167 transitions, 1813 flow [2024-06-27 20:14:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:14:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:14:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 20:14:23,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 20:14:23,071 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 1265 flow. Second operand 6 states and 144 transitions. [2024-06-27 20:14:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 167 transitions, 1813 flow [2024-06-27 20:14:23,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1709 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:14:23,363 INFO L231 Difference]: Finished difference. Result has 107 places, 141 transitions, 1324 flow [2024-06-27 20:14:23,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=107, PETRI_TRANSITIONS=141} [2024-06-27 20:14:23,364 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-27 20:14:23,364 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 141 transitions, 1324 flow [2024-06-27 20:14:23,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 20:14:23,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:23,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:14:23,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:23,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2028164850, now seen corresponding path program 1 times [2024-06-27 20:14:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317804662] [2024-06-27 20:14:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317804662] [2024-06-27 20:14:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317804662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:24,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324986363] [2024-06-27 20:14:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:24,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:24,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:24,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 141 transitions, 1324 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:24,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:24,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:24,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:27,455 INFO L124 PetriNetUnfolderBase]: 16122/22204 cut-off events. [2024-06-27 20:14:27,456 INFO L125 PetriNetUnfolderBase]: For 310030/310188 co-relation queries the response was YES. [2024-06-27 20:14:27,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115030 conditions, 22204 events. 16122/22204 cut-off events. For 310030/310188 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 121519 event pairs, 7097 based on Foata normal form. 6/22054 useless extension candidates. Maximal degree in co-relation 114985. Up to 21679 conditions per place. [2024-06-27 20:14:27,825 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 155 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-27 20:14:27,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 1836 flow [2024-06-27 20:14:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 20:14:27,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2024-06-27 20:14:27,827 INFO L175 Difference]: Start difference. First operand has 107 places, 141 transitions, 1324 flow. Second operand 8 states and 186 transitions. [2024-06-27 20:14:27,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 1836 flow [2024-06-27 20:14:28,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 184 transitions, 1778 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 20:14:28,104 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1380 flow [2024-06-27 20:14:28,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1380, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-27 20:14:28,105 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 20:14:28,105 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1380 flow [2024-06-27 20:14:28,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:28,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:28,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:14:28,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:28,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:28,106 INFO L85 PathProgramCache]: Analyzing trace with hash -555379756, now seen corresponding path program 2 times [2024-06-27 20:14:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:28,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103605904] [2024-06-27 20:14:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:29,394 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 20:14:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103605904] [2024-06-27 20:14:29,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103605904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:29,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:29,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099954641] [2024-06-27 20:14:29,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:29,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:29,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1380 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:29,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:29,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:29,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:32,270 INFO L124 PetriNetUnfolderBase]: 16107/22183 cut-off events. [2024-06-27 20:14:32,270 INFO L125 PetriNetUnfolderBase]: For 338837/338995 co-relation queries the response was YES. [2024-06-27 20:14:32,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117349 conditions, 22183 events. 16107/22183 cut-off events. For 338837/338995 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 121313 event pairs, 7094 based on Foata normal form. 6/22033 useless extension candidates. Maximal degree in co-relation 117302. Up to 21613 conditions per place. [2024-06-27 20:14:32,460 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 156 selfloop transitions, 28 changer transitions 0/192 dead transitions. [2024-06-27 20:14:32,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 192 transitions, 1956 flow [2024-06-27 20:14:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 20:14:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543269230769231 [2024-06-27 20:14:32,461 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1380 flow. Second operand 8 states and 189 transitions. [2024-06-27 20:14:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 192 transitions, 1956 flow [2024-06-27 20:14:32,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 192 transitions, 1876 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 20:14:32,744 INFO L231 Difference]: Finished difference. Result has 117 places, 151 transitions, 1484 flow [2024-06-27 20:14:32,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1484, PETRI_PLACES=117, PETRI_TRANSITIONS=151} [2024-06-27 20:14:32,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 20:14:32,745 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 151 transitions, 1484 flow [2024-06-27 20:14:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:32,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:32,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:32,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:14:32,746 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:32,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2036735730, now seen corresponding path program 3 times [2024-06-27 20:14:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367976474] [2024-06-27 20:14:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:33,922 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 20:14:33,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:33,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367976474] [2024-06-27 20:14:33,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367976474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:33,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:33,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:33,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97707188] [2024-06-27 20:14:33,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:33,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:33,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:33,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:34,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:34,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 151 transitions, 1484 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:34,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:34,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:34,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:36,782 INFO L124 PetriNetUnfolderBase]: 16143/22235 cut-off events. [2024-06-27 20:14:36,782 INFO L125 PetriNetUnfolderBase]: For 372238/372396 co-relation queries the response was YES. [2024-06-27 20:14:36,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120968 conditions, 22235 events. 16143/22235 cut-off events. For 372238/372396 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 121771 event pairs, 6884 based on Foata normal form. 6/22085 useless extension candidates. Maximal degree in co-relation 120919. Up to 21687 conditions per place. [2024-06-27 20:14:36,946 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 163 selfloop transitions, 23 changer transitions 0/194 dead transitions. [2024-06-27 20:14:36,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 194 transitions, 2016 flow [2024-06-27 20:14:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 20:14:36,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2024-06-27 20:14:36,956 INFO L175 Difference]: Start difference. First operand has 117 places, 151 transitions, 1484 flow. Second operand 8 states and 186 transitions. [2024-06-27 20:14:36,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 194 transitions, 2016 flow [2024-06-27 20:14:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 194 transitions, 1906 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 20:14:37,246 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1494 flow [2024-06-27 20:14:37,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1494, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-06-27 20:14:37,247 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 20:14:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1494 flow [2024-06-27 20:14:37,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:37,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:37,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:14:37,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:37,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2036439060, now seen corresponding path program 4 times [2024-06-27 20:14:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:37,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572882375] [2024-06-27 20:14:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:37,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:38,427 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 20:14:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572882375] [2024-06-27 20:14:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572882375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158576358] [2024-06-27 20:14:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:38,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1494 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:41,437 INFO L124 PetriNetUnfolderBase]: 16128/22214 cut-off events. [2024-06-27 20:14:41,437 INFO L125 PetriNetUnfolderBase]: For 410452/410610 co-relation queries the response was YES. [2024-06-27 20:14:41,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124007 conditions, 22214 events. 16128/22214 cut-off events. For 410452/410610 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 121589 event pairs, 7085 based on Foata normal form. 6/22064 useless extension candidates. Maximal degree in co-relation 123957. Up to 21629 conditions per place. [2024-06-27 20:14:41,606 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 158 selfloop transitions, 31 changer transitions 0/197 dead transitions. [2024-06-27 20:14:41,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 197 transitions, 2040 flow [2024-06-27 20:14:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:14:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:14:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 20:14:41,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495192307692308 [2024-06-27 20:14:41,607 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1494 flow. Second operand 8 states and 187 transitions. [2024-06-27 20:14:41,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 197 transitions, 2040 flow [2024-06-27 20:14:41,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 197 transitions, 1946 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 20:14:41,940 INFO L231 Difference]: Finished difference. Result has 122 places, 157 transitions, 1546 flow [2024-06-27 20:14:41,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1546, PETRI_PLACES=122, PETRI_TRANSITIONS=157} [2024-06-27 20:14:41,941 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-27 20:14:41,941 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 157 transitions, 1546 flow [2024-06-27 20:14:41,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:41,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:41,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:41,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:14:41,942 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:41,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2028395242, now seen corresponding path program 1 times [2024-06-27 20:14:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833812051] [2024-06-27 20:14:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833812051] [2024-06-27 20:14:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833812051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:14:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123489903] [2024-06-27 20:14:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:14:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:14:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:14:43,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:43,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 157 transitions, 1546 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 20:14:43,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:43,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:43,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:46,048 INFO L124 PetriNetUnfolderBase]: 16083/22144 cut-off events. [2024-06-27 20:14:46,048 INFO L125 PetriNetUnfolderBase]: For 451452/451618 co-relation queries the response was YES. [2024-06-27 20:14:46,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127027 conditions, 22144 events. 16083/22144 cut-off events. For 451452/451618 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 121068 event pairs, 6536 based on Foata normal form. 7/21993 useless extension candidates. Maximal degree in co-relation 126976. Up to 21321 conditions per place. [2024-06-27 20:14:46,370 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 136 selfloop transitions, 47 changer transitions 0/191 dead transitions. [2024-06-27 20:14:46,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 191 transitions, 2010 flow [2024-06-27 20:14:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:14:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:14:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 20:14:46,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 20:14:46,371 INFO L175 Difference]: Start difference. First operand has 122 places, 157 transitions, 1546 flow. Second operand 6 states and 157 transitions. [2024-06-27 20:14:46,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 191 transitions, 2010 flow [2024-06-27 20:14:46,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 191 transitions, 1896 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 20:14:46,712 INFO L231 Difference]: Finished difference. Result has 122 places, 157 transitions, 1547 flow [2024-06-27 20:14:46,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1547, PETRI_PLACES=122, PETRI_TRANSITIONS=157} [2024-06-27 20:14:46,713 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-27 20:14:46,713 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 157 transitions, 1547 flow [2024-06-27 20:14:46,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 20:14:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:46,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:46,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:14:46,714 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:14:46,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 274597262, now seen corresponding path program 2 times [2024-06-27 20:14:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595664956] [2024-06-27 20:14:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:46,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:47,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:47,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595664956] [2024-06-27 20:14:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595664956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:47,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:14:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663507254] [2024-06-27 20:14:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:14:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:14:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:14:47,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:14:47,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 157 transitions, 1547 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 20:14:47,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:47,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:14:47,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:50,126 INFO L124 PetriNetUnfolderBase]: 16076/22130 cut-off events. [2024-06-27 20:14:50,126 INFO L125 PetriNetUnfolderBase]: For 482149/482307 co-relation queries the response was YES.